ast

package
v3.1.0-beta.2+incompat... Latest Latest
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 Go to latest Published: Feb 13, 2020 License: Apache-2.0 Imports: 14 Imported by: 0

Documentation ¶

Overview ¶

Package ast is the abstract syntax tree parsed from a SQL statement by parser. It can be analysed and transformed by optimizer.

Index ¶

Constants ¶

View Source 
const (
	FlagConstant       uint64 = 0
	FlagHasParamMarker uint64 = 1 << iota
	FlagHasFunc
	FlagHasReference
	FlagHasAggregateFunc
	FlagHasSubquery
	FlagHasVariable
	FlagHasDefault
	FlagPreEvaluated
	FlagHasWindowFunc
)

Flags indicates whether an expression contains certain types of expression.

View Source 
const (
	RowFormatDefault uint64 = iota + 1
	RowFormatDynamic
	RowFormatFixed
	RowFormatCompressed
	RowFormatRedundant
	RowFormatCompact
	TokuDBRowFormatDefault
	TokuDBRowFormatFast
	TokuDBRowFormatSmall
	TokuDBRowFormatZlib
	TokuDBRowFormatQuickLZ
	TokuDBRowFormatLzma
	TokuDBRowFormatSnappy
	TokuDBRowFormatUncompressed
)

RowFormat types

View Source 
const (
	Terminated = iota
	Enclosed
	Escaped
)
View Source 
const (
	ShowNone = iota
	ShowEngines
	ShowDatabases
	ShowTables
	ShowTableStatus
	ShowColumns
	ShowWarnings
	ShowCharset
	ShowVariables
	ShowStatus
	ShowCollation
	ShowCreateTable
	ShowCreateView
	ShowCreateUser
	ShowGrants
	ShowTriggers
	ShowProcedureStatus
	ShowIndex
	ShowProcessList
	ShowCreateDatabase
	ShowEvents
	ShowStatsMeta
	ShowStatsHistograms
	ShowStatsBuckets
	ShowStatsHealthy
	ShowPlugins
	ShowProfile
	ShowProfiles
	ShowMasterStatus
	ShowPrivileges
	ShowErrors
	ShowBindings
	ShowPumpStatus
	ShowDrainerStatus
	ShowOpenTables
	ShowAnalyzeStatus
	ShowRegions
)

Show statement types.

View Source 
const (
	ProfileTypeInvalid = iota
	ProfileTypeCPU
	ProfileTypeMemory
	ProfileTypeBlockIo
	ProfileTypeContextSwitch
	ProfileTypePageFaults
	ProfileTypeIpc
	ProfileTypeSwaps
	ProfileTypeSource
	ProfileTypeAll
)
View Source 
const (
	Rows = iota
	Ranges
	Groups
)

Window function frame types. MySQL only supports `ROWS` and `RANGES`.

View Source 
const (
	Following = iota
	Preceding
	CurrentRow
)

Frame bound types.

View Source 
const (
	LogicAnd   = "and"
	Cast       = "cast"
	LeftShift  = "leftshift"
	RightShift = "rightshift"
	LogicOr    = "or"
	GE         = "ge"
	LE         = "le"
	EQ         = "eq"
	NE         = "ne"
	LT         = "lt"
	GT         = "gt"
	Plus       = "plus"
	Minus      = "minus"
	And        = "bitand"
	Or         = "bitor"
	Mod        = "mod"
	Xor        = "bitxor"
	Div        = "div"
	Mul        = "mul"
	UnaryNot   = "not" // Avoid name conflict with Not in github/pingcap/check.
	BitNeg     = "bitneg"
	IntDiv     = "intdiv"
	LogicXor   = "xor"
	NullEQ     = "nulleq"
	UnaryPlus  = "unaryplus"
	UnaryMinus = "unaryminus"
	In         = "in"
	Like       = "like"
	Case       = "case"
	Regexp     = "regexp"
	IsNull     = "isnull"
	IsTruth    = "istrue"  // Avoid name conflict with IsTrue in github/pingcap/check.
	IsFalsity  = "isfalse" // Avoid name conflict with IsFalse in github/pingcap/check.
	RowFunc    = "row"
	SetVar     = "setvar"
	GetVar     = "getvar"
	Values     = "values"
	BitCount   = "bit_count"
	GetParam   = "getparam"

	// common functions
	Coalesce = "coalesce"
	Greatest = "greatest"
	Least    = "least"
	Interval = "interval"

	// math functions
	Abs      = "abs"
	Acos     = "acos"
	Asin     = "asin"
	Atan     = "atan"
	Atan2    = "atan2"
	Ceil     = "ceil"
	Ceiling  = "ceiling"
	Conv     = "conv"
	Cos      = "cos"
	Cot      = "cot"
	CRC32    = "crc32"
	Degrees  = "degrees"
	Exp      = "exp"
	Floor    = "floor"
	Ln       = "ln"
	Log      = "log"
	Log2     = "log2"
	Log10    = "log10"
	PI       = "pi"
	Pow      = "pow"
	Power    = "power"
	Radians  = "radians"
	Rand     = "rand"
	Round    = "round"
	Sign     = "sign"
	Sin      = "sin"
	Sqrt     = "sqrt"
	Tan      = "tan"
	Truncate = "truncate"

	// time functions
	AddDate          = "adddate"
	AddTime          = "addtime"
	ConvertTz        = "convert_tz"
	Curdate          = "curdate"
	CurrentDate      = "current_date"
	CurrentTime      = "current_time"
	CurrentTimestamp = "current_timestamp"
	Curtime          = "curtime"
	Date             = "date"
	DateLiteral      = "dateliteral"
	DateAdd          = "date_add"
	DateFormat       = "date_format"
	DateSub          = "date_sub"
	DateDiff         = "datediff"
	Day              = "day"
	DayName          = "dayname"
	DayOfMonth       = "dayofmonth"
	DayOfWeek        = "dayofweek"
	DayOfYear        = "dayofyear"
	Extract          = "extract"
	FromDays         = "from_days"
	FromUnixTime     = "from_unixtime"
	GetFormat        = "get_format"
	Hour             = "hour"
	LocalTime        = "localtime"
	LocalTimestamp   = "localtimestamp"
	MakeDate         = "makedate"
	MakeTime         = "maketime"
	MicroSecond      = "microsecond"
	Minute           = "minute"
	Month            = "month"
	MonthName        = "monthname"
	Now              = "now"
	PeriodAdd        = "period_add"
	PeriodDiff       = "period_diff"
	Quarter          = "quarter"
	SecToTime        = "sec_to_time"
	Second           = "second"
	StrToDate        = "str_to_date"
	SubDate          = "subdate"
	SubTime          = "subtime"
	Sysdate          = "sysdate"
	Time             = "time"
	TimeLiteral      = "timeliteral"
	TimeFormat       = "time_format"
	TimeToSec        = "time_to_sec"
	TimeDiff         = "timediff"
	Timestamp        = "timestamp"
	TimestampLiteral = "timestampliteral"
	TimestampAdd     = "timestampadd"
	TimestampDiff    = "timestampdiff"
	ToDays           = "to_days"
	ToSeconds        = "to_seconds"
	UnixTimestamp    = "unix_timestamp"
	UTCDate          = "utc_date"
	UTCTime          = "utc_time"
	UTCTimestamp     = "utc_timestamp"
	Week             = "week"
	Weekday          = "weekday"
	WeekOfYear       = "weekofyear"
	Year             = "year"
	YearWeek         = "yearweek"
	LastDay          = "last_day"
	TiDBParseTso     = "tidb_parse_tso"

	// string functions
	ASCII           = "ascii"
	Bin             = "bin"
	Concat          = "concat"
	ConcatWS        = "concat_ws"
	Convert         = "convert"
	Elt             = "elt"
	ExportSet       = "export_set"
	Field           = "field"
	Format          = "format"
	FromBase64      = "from_base64"
	InsertFunc      = "insert_func"
	Instr           = "instr"
	Lcase           = "lcase"
	Left            = "left"
	Length          = "length"
	LoadFile        = "load_file"
	Locate          = "locate"
	Lower           = "lower"
	Lpad            = "lpad"
	LTrim           = "ltrim"
	MakeSet         = "make_set"
	Mid             = "mid"
	Oct             = "oct"
	Ord             = "ord"
	Position        = "position"
	Quote           = "quote"
	Repeat          = "repeat"
	Replace         = "replace"
	Reverse         = "reverse"
	Right           = "right"
	RTrim           = "rtrim"
	Space           = "space"
	Strcmp          = "strcmp"
	Substring       = "substring"
	Substr          = "substr"
	SubstringIndex  = "substring_index"
	ToBase64        = "to_base64"
	Trim            = "trim"
	Upper           = "upper"
	Ucase           = "ucase"
	Hex             = "hex"
	Unhex           = "unhex"
	Rpad            = "rpad"
	BitLength       = "bit_length"
	CharFunc        = "char_func"
	CharLength      = "char_length"
	CharacterLength = "character_length"
	FindInSet       = "find_in_set"

	// information functions
	Benchmark      = "benchmark"
	Charset        = "charset"
	Coercibility   = "coercibility"
	Collation      = "collation"
	ConnectionID   = "connection_id"
	CurrentUser    = "current_user"
	CurrentRole    = "current_role"
	Database       = "database"
	FoundRows      = "found_rows"
	LastInsertId   = "last_insert_id"
	RowCount       = "row_count"
	Schema         = "schema"
	SessionUser    = "session_user"
	SystemUser     = "system_user"
	User           = "user"
	Version        = "version"
	TiDBVersion    = "tidb_version"
	TiDBIsDDLOwner = "tidb_is_ddl_owner"
	TiDBDecodePlan = "tidb_decode_plan"

	// control functions
	If     = "if"
	Ifnull = "ifnull"
	Nullif = "nullif"

	// miscellaneous functions
	AnyValue        = "any_value"
	DefaultFunc     = "default_func"
	InetAton        = "inet_aton"
	InetNtoa        = "inet_ntoa"
	Inet6Aton       = "inet6_aton"
	Inet6Ntoa       = "inet6_ntoa"
	IsFreeLock      = "is_free_lock"
	IsIPv4          = "is_ipv4"
	IsIPv4Compat    = "is_ipv4_compat"
	IsIPv4Mapped    = "is_ipv4_mapped"
	IsIPv6          = "is_ipv6"
	IsUsedLock      = "is_used_lock"
	MasterPosWait   = "master_pos_wait"
	NameConst       = "name_const"
	ReleaseAllLocks = "release_all_locks"
	Sleep           = "sleep"
	UUID            = "uuid"
	UUIDShort       = "uuid_short"
	// get_lock() and release_lock() is parsed but do nothing.
	// It is used for preventing error in Ruby's activerecord migrations.
	GetLock     = "get_lock"
	ReleaseLock = "release_lock"

	// encryption and compression functions
	AesDecrypt               = "aes_decrypt"
	AesEncrypt               = "aes_encrypt"
	Compress                 = "compress"
	Decode                   = "decode"
	DesDecrypt               = "des_decrypt"
	DesEncrypt               = "des_encrypt"
	Encode                   = "encode"
	Encrypt                  = "encrypt"
	MD5                      = "md5"
	OldPassword              = "old_password"
	PasswordFunc             = "password_func"
	RandomBytes              = "random_bytes"
	SHA1                     = "sha1"
	SHA                      = "sha"
	SHA2                     = "sha2"
	Uncompress               = "uncompress"
	UncompressedLength       = "uncompressed_length"
	ValidatePasswordStrength = "validate_password_strength"

	// json functions
	JSONType          = "json_type"
	JSONExtract       = "json_extract"
	JSONUnquote       = "json_unquote"
	JSONArray         = "json_array"
	JSONObject        = "json_object"
	JSONMerge         = "json_merge"
	JSONSet           = "json_set"
	JSONInsert        = "json_insert"
	JSONReplace       = "json_replace"
	JSONRemove        = "json_remove"
	JSONContains      = "json_contains"
	JSONContainsPath  = "json_contains_path"
	JSONValid         = "json_valid"
	JSONArrayAppend   = "json_array_append"
	JSONArrayInsert   = "json_array_insert"
	JSONMergePatch    = "json_merge_patch"
	JSONMergePreserve = "json_merge_preserve"
	JSONPretty        = "json_pretty"
	JSONQuote         = "json_quote"
	JSONSearch        = "json_search"
	JSONStorageSize   = "json_storage_size"
	JSONDepth         = "json_depth"
	JSONKeys          = "json_keys"
	JSONLength        = "json_length"
)

List scalar function names.

View Source 
const (
	// AggFuncCount is the name of Count function.
	AggFuncCount = "count"
	// AggFuncSum is the name of Sum function.
	AggFuncSum = "sum"
	// AggFuncAvg is the name of Avg function.
	AggFuncAvg = "avg"
	// AggFuncFirstRow is the name of FirstRowColumn function.
	AggFuncFirstRow = "firstrow"
	// AggFuncMax is the name of max function.
	AggFuncMax = "max"
	// AggFuncMin is the name of min function.
	AggFuncMin = "min"
	// AggFuncGroupConcat is the name of group_concat function.
	AggFuncGroupConcat = "group_concat"
	// AggFuncBitOr is the name of bit_or function.
	AggFuncBitOr = "bit_or"
	// AggFuncBitXor is the name of bit_xor function.
	AggFuncBitXor = "bit_xor"
	// AggFuncBitAnd is the name of bit_and function.
	AggFuncBitAnd = "bit_and"
	// AggFuncVarPop is the name of var_pop function
	AggFuncVarPop = "var_pop"
	// AggFuncVarSamp is the name of var_samp function
	AggFuncVarSamp = "var_samp"
	// AggFuncStddevPop is the name of stddev_pop function
	AggFuncStddevPop = "stddev_pop"
	// AggFuncStddevSamp is the name of stddev_samp function
	AggFuncStddevSamp = "stddev_samp"
)
View Source 
const (
	// WindowFuncRowNumber is the name of row_number function.
	WindowFuncRowNumber = "row_number"
	// WindowFuncRank is the name of rank function.
	WindowFuncRank = "rank"
	// WindowFuncDenseRank is the name of dense_rank function.
	WindowFuncDenseRank = "dense_rank"
	// WindowFuncCumeDist is the name of cume_dist function.
	WindowFuncCumeDist = "cume_dist"
	// WindowFuncPercentRank is the name of percent_rank function.
	WindowFuncPercentRank = "percent_rank"
	// WindowFuncNtile is the name of ntile function.
	WindowFuncNtile = "ntile"
	// WindowFuncLead is the name of lead function.
	WindowFuncLead = "lead"
	// WindowFuncLag is the name of lag function.
	WindowFuncLag = "lag"
	// WindowFuncFirstValue is the name of first_value function.
	WindowFuncFirstValue = "first_value"
	// WindowFuncLastValue is the name of last_value function.
	WindowFuncLastValue = "last_value"
	// WindowFuncNthValue is the name of nth_value function.
	WindowFuncNthValue = "nth_value"
)
View Source 
const (
	ReadCommitted   = "READ-COMMITTED"
	ReadUncommitted = "READ-UNCOMMITTED"
	Serializable    = "SERIALIZABLE"
	RepeatableRead  = "REPEATABLE-READ"

	// Valid formats for explain statement.
	ExplainFormatROW = "row"
	ExplainFormatDOT = "dot"
	PumpType         = "PUMP"
	DrainerType      = "DRAINER"
)

Isolation level constants.

View Source 
const (
	Optimistic  = "OPTIMISTIC"
	Pessimistic = "PESSIMISTIC"
)

Transaction mode constants.

View Source 
const (
	TslNone = iota
	Ssl
	X509
	Cipher
	Issuer
	Subject
)
View Source 
const (
	MaxQueriesPerHour = iota + 1
	MaxUpdatesPerHour
	MaxConnectionsPerHour
	MaxUserConnections
)
View Source 
const (
	PasswordExpire = iota + 1
	PasswordExpireDefault
	PasswordExpireNever
	PasswordExpireInterval
	Lock
	Unlock
)
View Source 
const (
	AdminShowDDL = iota + 1
	AdminCheckTable
	AdminShowDDLJobs
	AdminCancelDDLJobs
	AdminCheckIndex
	AdminRecoverIndex
	AdminCleanupIndex
	AdminCheckIndexRange
	AdminShowDDLJobQueries
	AdminChecksumTable
	AdminShowSlow
	AdminShowNextRowID
	AdminReloadExprPushdownBlacklist
	AdminReloadOptRuleBlacklist
	AdminPluginDisable
	AdminPluginEnable
)

Admin statement types.

View Source 
const (
	// SetNames is the const for set names/charset stmt.
	// If VariableAssignment.Name == Names, it should be set names/charset stmt.
	SetNames = "SetNAMES"
)

Variables ¶

View Source 
var (
	ErrNoParts                              = terror.ClassDDL.NewStd(mysql.ErrNoParts)
	ErrPartitionColumnList                  = terror.ClassDDL.NewStd(mysql.ErrPartitionColumnList)
	ErrPartitionRequiresValues              = terror.ClassDDL.NewStd(mysql.ErrPartitionRequiresValues)
	ErrPartitionsMustBeDefined              = terror.ClassDDL.NewStd(mysql.ErrPartitionsMustBeDefined)
	ErrPartitionWrongNoPart                 = terror.ClassDDL.NewStd(mysql.ErrPartitionWrongNoPart)
	ErrPartitionWrongNoSubpart              = terror.ClassDDL.NewStd(mysql.ErrPartitionWrongNoSubpart)
	ErrPartitionWrongValues                 = terror.ClassDDL.NewStd(mysql.ErrPartitionWrongValues)
	ErrRowSinglePartitionField              = terror.ClassDDL.NewStd(mysql.ErrRowSinglePartitionField)
	ErrSubpartition                         = terror.ClassDDL.NewStd(mysql.ErrSubpartition)
	ErrSystemVersioningWrongPartitions      = terror.ClassDDL.NewStd(mysql.ErrSystemVersioningWrongPartitions)
	ErrTooManyValues                        = terror.ClassDDL.NewStd(mysql.ErrTooManyValues)
	ErrWrongPartitionTypeExpectedSystemTime = terror.ClassDDL.NewStd(mysql.ErrWrongPartitionTypeExpectedSystemTime)
)
View Source 
var (
	// ExplainFormats stores the valid formats for explain statement, used by validator.
	ExplainFormats = []string{
		ExplainFormatROW,
		ExplainFormatDOT,
	}
)
View Source 
var NewBitLiteral func(string) (interface{}, error)

NewBitLiteral creates a types.BitLiteral value, it's provided by parser driver.

View Source 
var NewDecimal func(string) (interface{}, error)

NewDecimal creates a types.Decimal value, it's provided by parser driver.

View Source 
var NewHexLiteral func(string) (interface{}, error)

NewHexLiteral creates a types.HexLiteral value, it's provided by parser driver.

View Source 
var NewParamMarkerExpr func(offset int) ParamMarkerExpr

NewParamMarkerExpr creates a ParamMarkerExpr.

View Source 
var NewValueExpr func(interface{}) ValueExpr

NewValueExpr creates a ValueExpr with value, and sets default field type.

Functions ¶

func HasAggFlag ¶ 

func HasAggFlag(expr ExprNode) bool

HasAggFlag checks if the expr contains FlagHasAggregateFunc.

func HasWindowFlag ¶ 

func HasWindowFlag(expr ExprNode) bool

func IsReadOnly ¶ 

func IsReadOnly(node Node) bool

IsReadOnly checks whether the input ast is readOnly.

func SetFlag ¶ 

func SetFlag(n Node)

SetFlag sets flag for expression.

Types ¶

type AdminStmt ¶ 

type AdminStmt struct {
	Tp        AdminStmtType
	Index     string
	Tables    []*TableName
	JobIDs    []int64
	JobNumber int64

	HandleRanges []HandleRange
	ShowSlow     *ShowSlow
	Plugins      []string
	// contains filtered or unexported fields
}

AdminStmt is the struct for Admin statement.

func (*AdminStmt) Accept ¶ 

func (n *AdminStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*AdminStmt) Restore ¶ 

func (n *AdminStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type AdminStmtType ¶ 

type AdminStmtType int

AdminStmtType is the type for admin statement.

type AggregateFuncExpr ¶ 

type AggregateFuncExpr struct {

	// F is the function name.
	F string
	// Args is the function args.
	Args []ExprNode
	// Distinct is true, function hence only aggregate distinct values.
	// For example, column c1 values are "1", "2", "2",  "sum(c1)" is "5",
	// but "sum(distinct c1)" is "3".
	Distinct bool
	// contains filtered or unexported fields
}

AggregateFuncExpr represents aggregate function expression.

func (*AggregateFuncExpr) Accept ¶ 

func (n *AggregateFuncExpr) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*AggregateFuncExpr) Format ¶ 

func (n *AggregateFuncExpr) Format(w io.Writer)

Format the ExprNode into a Writer.

func (*AggregateFuncExpr) Restore ¶ 

func (n *AggregateFuncExpr) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type AlterAlgorithm ¶ 

type AlterAlgorithm byte

AlterAlgorithm is the algorithm of the DDL operations. See https://dev.mysql.com/doc/refman/8.0/en/alter-table.html#alter-table-performance. 

const (
	AlterAlgorithmDefault AlterAlgorithm = iota
	AlterAlgorithmCopy
	AlterAlgorithmInplace
	AlterAlgorithmInstant
)

DDL alter algorithms. For now, TiDB only supported inplace and instance algorithms. If the user specify `copy`, will get an error.

func (AlterAlgorithm) String ¶ 

func (a AlterAlgorithm) String() string

type AlterDatabaseStmt ¶ 

type AlterDatabaseStmt struct {
	Name                 string
	AlterDefaultDatabase bool
	Options              []*DatabaseOption
	// contains filtered or unexported fields
}

AlterDatabaseStmt is a statement to change the structure of a database. See https://dev.mysql.com/doc/refman/5.7/en/alter-database.html

func (*AlterDatabaseStmt) Accept ¶ 

func (n *AlterDatabaseStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*AlterDatabaseStmt) Restore ¶ 

func (n *AlterDatabaseStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type AlterTableSpec ¶ 

type AlterTableSpec struct {
	Tp              AlterTableType
	Name            string
	Constraint      *Constraint
	Options         []*TableOption
	NewTable        *TableName
	NewColumns      []*ColumnDef
	OldColumnName   *ColumnName
	Position        *ColumnPosition
	LockType        LockType
	Algorithm       AlterAlgorithm
	Comment         string
	FromKey         model.CIStr
	ToKey           model.CIStr
	Partition       *PartitionOptions
	PartitionNames  []model.CIStr
	PartDefinitions []*PartitionDefinition
	Num             uint64
	TiFlashReplica  *TiFlashReplicaSpec
	// contains filtered or unexported fields
}

AlterTableSpec represents alter table specification.

func (*AlterTableSpec) Accept ¶ 

func (n *AlterTableSpec) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*AlterTableSpec) Restore ¶ 

func (n *AlterTableSpec) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*AlterTableSpec) SetText ¶ 

func (n *AlterTableSpec) SetText(text string)

SetText implements Node interface.

func (*AlterTableSpec) Text ¶ 

func (n *AlterTableSpec) Text() string

Text implements Node interface.

type AlterTableStmt ¶ 

type AlterTableStmt struct {
	Table *TableName
	Specs []*AlterTableSpec
	// contains filtered or unexported fields
}

AlterTableStmt is a statement to change the structure of a table. See https://dev.mysql.com/doc/refman/5.7/en/alter-table.html

func (*AlterTableStmt) Accept ¶ 

func (n *AlterTableStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*AlterTableStmt) Restore ¶ 

func (n *AlterTableStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type AlterTableType ¶ 

type AlterTableType int

AlterTableType is the type for AlterTableSpec. 

const (
	AlterTableOption AlterTableType = iota + 1
	AlterTableAddColumns
	AlterTableAddConstraint
	AlterTableDropColumn
	AlterTableDropPrimaryKey
	AlterTableDropIndex
	AlterTableDropForeignKey
	AlterTableModifyColumn
	AlterTableChangeColumn
	AlterTableRenameTable
	AlterTableAlterColumn
	AlterTableLock
	AlterTableAlgorithm
	AlterTableRenameIndex
	AlterTableForce
	AlterTableAddPartitions
	AlterTableCoalescePartitions
	AlterTableDropPartition
	AlterTableTruncatePartition
	AlterTablePartition
	AlterTableEnableKeys
	AlterTableDisableKeys
	// AlterTableSetTiFlashReplica uses to set the table TiFlash replica.
	AlterTableSetTiFlashReplica
)

AlterTable types.

type AlterUserStmt ¶ 

type AlterUserStmt struct {
	IfExists              bool
	CurrentAuth           *AuthOption
	Specs                 []*UserSpec
	TLSOptions            []*TLSOption
	ResourceOptions       []*ResourceOption
	PasswordOrLockOptions []*PasswordOrLockOption
	// contains filtered or unexported fields
}

AlterUserStmt modifies user account. See https://dev.mysql.com/doc/refman/5.7/en/alter-user.html

func (*AlterUserStmt) Accept ¶ 

func (n *AlterUserStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*AlterUserStmt) Restore ¶ 

func (n *AlterUserStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*AlterUserStmt) SecureText ¶ 

func (n *AlterUserStmt) SecureText() string

SecureText implements SensitiveStatement interface.

type AnalyzeTableStmt ¶ 

type AnalyzeTableStmt struct {
	TableNames     []*TableName
	PartitionNames []model.CIStr
	IndexNames     []model.CIStr
	MaxNumBuckets  uint64

	// IndexFlag is true when we only analyze indices for a table.
	IndexFlag   bool
	Incremental bool
	// contains filtered or unexported fields
}

AnalyzeTableStmt is used to create table statistics.

func (*AnalyzeTableStmt) Accept ¶ 

func (n *AnalyzeTableStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*AnalyzeTableStmt) Restore ¶ 

func (n *AnalyzeTableStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type Assignment ¶ 

type Assignment struct {

	// Column is the column name to be assigned.
	Column *ColumnName
	// Expr is the expression assigning to ColName.
	Expr ExprNode
	// contains filtered or unexported fields
}

Assignment is the expression for assignment, like a = 1.

func (*Assignment) Accept ¶ 

func (n *Assignment) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*Assignment) Restore ¶ 

func (n *Assignment) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*Assignment) SetText ¶ 

func (n *Assignment) SetText(text string)

SetText implements Node interface.

func (*Assignment) Text ¶ 

func (n *Assignment) Text() string

Text implements Node interface.

type AuthOption ¶ 

type AuthOption struct {
	// ByAuthString set as true, if AuthString is used for authorization. Otherwise, authorization is done by HashString.
	ByAuthString bool
	AuthString   string
	HashString   string
}

AuthOption is used for parsing create use statement.

func (*AuthOption) Restore ¶ 

func (n *AuthOption) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type BeginStmt ¶ 

type BeginStmt struct {
	Mode string
	// contains filtered or unexported fields
}

BeginStmt is a statement to start a new transaction. See https://dev.mysql.com/doc/refman/5.7/en/commit.html

func (*BeginStmt) Accept ¶ 

func (n *BeginStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*BeginStmt) Restore ¶ 

func (n *BeginStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type BetweenExpr ¶ 

type BetweenExpr struct {

	// Expr is the expression to be checked.
	Expr ExprNode
	// Left is the expression for minimal value in the range.
	Left ExprNode
	// Right is the expression for maximum value in the range.
	Right ExprNode
	// Not is true, the expression is "not between and".
	Not bool
	// contains filtered or unexported fields
}

BetweenExpr is for "between and" or "not between and" expression.

func (*BetweenExpr) Accept ¶ 

func (n *BetweenExpr) Accept(v Visitor) (Node, bool)

Accept implements Node interface.

func (*BetweenExpr) Format ¶ 

func (n *BetweenExpr) Format(w io.Writer)

Format the ExprNode into a Writer.

func (*BetweenExpr) GetFlag ¶ 

func (en *BetweenExpr) GetFlag() uint64

GetFlag implements ExprNode interface.

func (*BetweenExpr) GetType ¶ 

func (en *BetweenExpr) GetType() *types.FieldType

GetType implements ExprNode interface.

func (*BetweenExpr) Restore ¶ 

func (n *BetweenExpr) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*BetweenExpr) SetFlag ¶ 

func (en *BetweenExpr) SetFlag(flag uint64)

SetFlag implements ExprNode interface.

func (*BetweenExpr) SetType ¶ 

func (en *BetweenExpr) SetType(tp *types.FieldType)

SetType implements ExprNode interface.

type BinaryOperationExpr ¶ 

type BinaryOperationExpr struct {

	// Op is the operator code for BinaryOperation.
	Op opcode.Op
	// L is the left expression in BinaryOperation.
	L ExprNode
	// R is the right expression in BinaryOperation.
	R ExprNode
	// contains filtered or unexported fields
}

BinaryOperationExpr is for binary operation like `1 + 1`, `1 - 1`, etc.

func (*BinaryOperationExpr) Accept ¶ 

func (n *BinaryOperationExpr) Accept(v Visitor) (Node, bool)

Accept implements Node interface.

func (*BinaryOperationExpr) Format ¶ 

func (n *BinaryOperationExpr) Format(w io.Writer)

Format the ExprNode into a Writer.

func (*BinaryOperationExpr) GetFlag ¶ 

func (en *BinaryOperationExpr) GetFlag() uint64

GetFlag implements ExprNode interface.

func (*BinaryOperationExpr) GetType ¶ 

func (en *BinaryOperationExpr) GetType() *types.FieldType

GetType implements ExprNode interface.

func (*BinaryOperationExpr) Restore ¶ 

func (n *BinaryOperationExpr) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*BinaryOperationExpr) SetFlag ¶ 

func (en *BinaryOperationExpr) SetFlag(flag uint64)

SetFlag implements ExprNode interface.

func (*BinaryOperationExpr) SetType ¶ 

func (en *BinaryOperationExpr) SetType(tp *types.FieldType)

SetType implements ExprNode interface.

type BinlogStmt ¶ 

type BinlogStmt struct {
	Str string
	// contains filtered or unexported fields
}

BinlogStmt is an internal-use statement. We just parse and ignore it. See http://dev.mysql.com/doc/refman/5.7/en/binlog.html

func (*BinlogStmt) Accept ¶ 

func (n *BinlogStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*BinlogStmt) Restore ¶ 

func (n *BinlogStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type BoundType ¶ 

type BoundType int

FrameType is the type of window function frame bound.

type ByItem ¶ 

type ByItem struct {
	Expr ExprNode
	Desc bool
	// contains filtered or unexported fields
}

ByItem represents an item in order by or group by.

func (*ByItem) Accept ¶ 

func (n *ByItem) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*ByItem) Restore ¶ 

func (n *ByItem) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*ByItem) SetText ¶ 

func (n *ByItem) SetText(text string)

SetText implements Node interface.

func (*ByItem) Text ¶ 

func (n *ByItem) Text() string

Text implements Node interface.

type CaseExpr ¶ 

type CaseExpr struct {

	// Value is the compare value expression.
	Value ExprNode
	// WhenClauses is the condition check expression.
	WhenClauses []*WhenClause
	// ElseClause is the else result expression.
	ElseClause ExprNode
	// contains filtered or unexported fields
}

CaseExpr is the case expression.

func (*CaseExpr) Accept ¶ 

func (n *CaseExpr) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*CaseExpr) Format ¶ 

func (n *CaseExpr) Format(w io.Writer)

Format the ExprNode into a Writer.

func (*CaseExpr) GetFlag ¶ 

func (en *CaseExpr) GetFlag() uint64

GetFlag implements ExprNode interface.

func (*CaseExpr) GetType ¶ 

func (en *CaseExpr) GetType() *types.FieldType

GetType implements ExprNode interface.

func (*CaseExpr) Restore ¶ 

func (n *CaseExpr) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*CaseExpr) SetFlag ¶ 

func (en *CaseExpr) SetFlag(flag uint64)

SetFlag implements ExprNode interface.

func (*CaseExpr) SetType ¶ 

func (en *CaseExpr) SetType(tp *types.FieldType)

SetType implements ExprNode interface.

type CastFunctionType ¶ 

type CastFunctionType int

CastFunctionType is the type for cast function. 

const (
	CastFunction CastFunctionType = iota + 1
	CastConvertFunction
	CastBinaryOperator
)

CastFunction types

type ChangeStmt ¶ 

type ChangeStmt struct {
	NodeType string
	State    string
	NodeID   string
	// contains filtered or unexported fields
}

func (*ChangeStmt) Accept ¶ 

func (n *ChangeStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*ChangeStmt) Restore ¶ 

func (n *ChangeStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*ChangeStmt) SecureText ¶ 

func (n *ChangeStmt) SecureText() string

SecureText implements SensitiveStatement interface.

type CharsetOpt ¶ 

type CharsetOpt struct {
	Chs string
	Col string
}

CharsetOpt is used for parsing charset option from SQL.

type CleanupTableLockStmt ¶ 

type CleanupTableLockStmt struct {
	Tables []*TableName
	// contains filtered or unexported fields
}

CleanupTableLockStmt is a statement to cleanup table lock.

func (*CleanupTableLockStmt) Accept ¶ 

func (n *CleanupTableLockStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*CleanupTableLockStmt) Restore ¶ 

func (n *CleanupTableLockStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type ColumnDef ¶ 

type ColumnDef struct {
	Name    *ColumnName
	Tp      *types.FieldType
	Options []*ColumnOption
	// contains filtered or unexported fields
}

ColumnDef is used for parsing column definition from SQL.

func (*ColumnDef) Accept ¶ 

func (n *ColumnDef) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*ColumnDef) Restore ¶ 

func (n *ColumnDef) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*ColumnDef) SetText ¶ 

func (n *ColumnDef) SetText(text string)

SetText implements Node interface.

func (*ColumnDef) Text ¶ 

func (n *ColumnDef) Text() string

Text implements Node interface.

func (*ColumnDef) Validate ¶ 

func (n *ColumnDef) Validate() bool

Validate checks if a column definition is legal. For example, generated column definitions that contain such column options as `ON UPDATE`, `AUTO_INCREMENT`, `DEFAULT` are illegal.

type ColumnName ¶ 

type ColumnName struct {
	Schema model.CIStr
	Table  model.CIStr
	Name   model.CIStr
	// contains filtered or unexported fields
}

ColumnName represents column name.

func (*ColumnName) Accept ¶ 

func (n *ColumnName) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*ColumnName) OrigColName ¶ 

func (n *ColumnName) OrigColName() (ret string)

OrigColName returns the full original column name.

func (*ColumnName) Restore ¶ 

func (n *ColumnName) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*ColumnName) SetText ¶ 

func (n *ColumnName) SetText(text string)

SetText implements Node interface.

func (*ColumnName) String ¶ 

func (n *ColumnName) String() string

String implements Stringer interface.

func (*ColumnName) Text ¶ 

func (n *ColumnName) Text() string

Text implements Node interface.

type ColumnNameExpr ¶ 

type ColumnNameExpr struct {

	// Name is the referenced column name.
	Name *ColumnName

	// Refer is the result field the column name refers to.
	// The value of Refer.Expr is used as the value of the expression.
	Refer *ResultField
	// contains filtered or unexported fields
}

ColumnNameExpr represents a column name expression.

func (*ColumnNameExpr) Accept ¶ 

func (n *ColumnNameExpr) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*ColumnNameExpr) Format ¶ 

func (n *ColumnNameExpr) Format(w io.Writer)

Format the ExprNode into a Writer.

func (*ColumnNameExpr) GetFlag ¶ 

func (en *ColumnNameExpr) GetFlag() uint64

GetFlag implements ExprNode interface.

func (*ColumnNameExpr) GetType ¶ 

func (en *ColumnNameExpr) GetType() *types.FieldType

GetType implements ExprNode interface.

func (*ColumnNameExpr) Restore ¶ 

func (n *ColumnNameExpr) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*ColumnNameExpr) SetFlag ¶ 

func (en *ColumnNameExpr) SetFlag(flag uint64)

SetFlag implements ExprNode interface.

func (*ColumnNameExpr) SetType ¶ 

func (en *ColumnNameExpr) SetType(tp *types.FieldType)

SetType implements ExprNode interface.

type ColumnNameOrUserVar ¶ 

type ColumnNameOrUserVar struct {
	ColumnName *ColumnName
	UserVar    *VariableExpr
}

type ColumnOption ¶ 

type ColumnOption struct {
	Tp ColumnOptionType
	// Expr is used for ColumnOptionDefaultValue/ColumnOptionOnUpdateColumnOptionGenerated.
	// For ColumnOptionDefaultValue or ColumnOptionOnUpdate, it's the target value.
	// For ColumnOptionGenerated, it's the target expression.
	Expr ExprNode
	// Stored is only for ColumnOptionGenerated, default is false.
	Stored bool
	// Refer is used for foreign key.
	Refer               *ReferenceDef
	StrValue            string
	AutoRandomBitLength int
	// Enforced is only for Check, default is true.
	Enforced bool
	// contains filtered or unexported fields
}

ColumnOption is used for parsing column constraint info from SQL.

func (*ColumnOption) Accept ¶ 

func (n *ColumnOption) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*ColumnOption) Restore ¶ 

func (n *ColumnOption) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*ColumnOption) SetText ¶ 

func (n *ColumnOption) SetText(text string)

SetText implements Node interface.

func (*ColumnOption) Text ¶ 

func (n *ColumnOption) Text() string

Text implements Node interface.

type ColumnOptionType ¶ 

type ColumnOptionType int

ColumnOptionType is the type for ColumnOption. 

const (
	ColumnOptionNoOption ColumnOptionType = iota
	ColumnOptionPrimaryKey
	ColumnOptionNotNull
	ColumnOptionAutoIncrement
	ColumnOptionDefaultValue
	ColumnOptionUniqKey
	ColumnOptionNull
	ColumnOptionOnUpdate // For Timestamp and Datetime only.
	ColumnOptionFulltext
	ColumnOptionComment
	ColumnOptionGenerated
	ColumnOptionReference
	ColumnOptionCollate
	ColumnOptionCheck
	ColumnOptionAutoRandom
)

ColumnOption types.

type ColumnPosition ¶ 

type ColumnPosition struct {

	// Tp is either ColumnPositionNone, ColumnPositionFirst or ColumnPositionAfter.
	Tp ColumnPositionType
	// RelativeColumn is the column the newly added column after if type is ColumnPositionAfter
	RelativeColumn *ColumnName
	// contains filtered or unexported fields
}

ColumnPosition represent the position of the newly added column

func (*ColumnPosition) Accept ¶ 

func (n *ColumnPosition) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*ColumnPosition) Restore ¶ 

func (n *ColumnPosition) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*ColumnPosition) SetText ¶ 

func (n *ColumnPosition) SetText(text string)

SetText implements Node interface.

func (*ColumnPosition) Text ¶ 

func (n *ColumnPosition) Text() string

Text implements Node interface.

type ColumnPositionType ¶ 

type ColumnPositionType int

ColumnPositionType is the type for ColumnPosition. 

const (
	ColumnPositionNone ColumnPositionType = iota
	ColumnPositionFirst
	ColumnPositionAfter
)

ColumnPosition Types

type CommitStmt ¶ 

type CommitStmt struct {
	// contains filtered or unexported fields
}

CommitStmt is a statement to commit the current transaction. See https://dev.mysql.com/doc/refman/5.7/en/commit.html

func (*CommitStmt) Accept ¶ 

func (n *CommitStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*CommitStmt) Restore ¶ 

func (n *CommitStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type CompareSubqueryExpr ¶ 

type CompareSubqueryExpr struct {

	// L is the left expression
	L ExprNode
	// Op is the comparison opcode.
	Op opcode.Op
	// R is the subquery for right expression, may be rewritten to other type of expression.
	R ExprNode
	// All is true, we should compare all records in subquery.
	All bool
	// contains filtered or unexported fields
}

CompareSubqueryExpr is the expression for "expr cmp (select ...)". See https://dev.mysql.com/doc/refman/5.7/en/comparisons-using-subqueries.html See https://dev.mysql.com/doc/refman/5.7/en/any-in-some-subqueries.html See https://dev.mysql.com/doc/refman/5.7/en/all-subqueries.html

func (*CompareSubqueryExpr) Accept ¶ 

func (n *CompareSubqueryExpr) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*CompareSubqueryExpr) Format ¶ 

func (n *CompareSubqueryExpr) Format(w io.Writer)

Format the ExprNode into a Writer.

func (*CompareSubqueryExpr) GetFlag ¶ 

func (en *CompareSubqueryExpr) GetFlag() uint64

GetFlag implements ExprNode interface.

func (*CompareSubqueryExpr) GetType ¶ 

func (en *CompareSubqueryExpr) GetType() *types.FieldType

GetType implements ExprNode interface.

func (*CompareSubqueryExpr) Restore ¶ 

func (n *CompareSubqueryExpr) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*CompareSubqueryExpr) SetFlag ¶ 

func (en *CompareSubqueryExpr) SetFlag(flag uint64)

SetFlag implements ExprNode interface.

func (*CompareSubqueryExpr) SetType ¶ 

func (en *CompareSubqueryExpr) SetType(tp *types.FieldType)

SetType implements ExprNode interface.

type Constraint ¶ 

type Constraint struct {
	Tp   ConstraintType
	Name string

	Keys []*IndexColName // Used for PRIMARY KEY, UNIQUE, ......

	Refer *ReferenceDef // Used for foreign key.

	Option *IndexOption // Index Options

	Expr ExprNode // Used for Check

	Enforced bool // Used for Check
	// contains filtered or unexported fields
}

Constraint is constraint for table definition.

func (*Constraint) Accept ¶ 

func (n *Constraint) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*Constraint) Restore ¶ 

func (n *Constraint) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*Constraint) SetText ¶ 

func (n *Constraint) SetText(text string)

SetText implements Node interface.

func (*Constraint) Text ¶ 

func (n *Constraint) Text() string

Text implements Node interface.

type ConstraintType ¶ 

type ConstraintType int

ConstraintType is the type for Constraint. 

const (
	ConstraintNoConstraint ConstraintType = iota
	ConstraintPrimaryKey
	ConstraintKey
	ConstraintIndex
	ConstraintUniq
	ConstraintUniqKey
	ConstraintUniqIndex
	ConstraintForeignKey
	ConstraintFulltext
	ConstraintCheck
)

ConstraintTypes

type CreateBindingStmt ¶ 

type CreateBindingStmt struct {
	GlobalScope bool
	OriginSel   StmtNode
	HintedSel   StmtNode
	// contains filtered or unexported fields
}

CreateBindingStmt creates sql binding hint.

func (*CreateBindingStmt) Accept ¶ 

func (n *CreateBindingStmt) Accept(v Visitor) (Node, bool)

func (*CreateBindingStmt) Restore ¶ 

func (n *CreateBindingStmt) Restore(ctx *RestoreCtx) error

type CreateDatabaseStmt ¶ 

type CreateDatabaseStmt struct {
	IfNotExists bool
	Name        string
	Options     []*DatabaseOption
	// contains filtered or unexported fields
}

CreateDatabaseStmt is a statement to create a database. See https://dev.mysql.com/doc/refman/5.7/en/create-database.html

func (*CreateDatabaseStmt) Accept ¶ 

func (n *CreateDatabaseStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*CreateDatabaseStmt) Restore ¶ 

func (n *CreateDatabaseStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type CreateIndexStmt ¶ 

type CreateIndexStmt struct {
	IndexName     string
	Table         *TableName
	Unique        bool
	IndexColNames []*IndexColName
	IndexOption   *IndexOption
	// contains filtered or unexported fields
}

CreateIndexStmt is a statement to create an index. See https://dev.mysql.com/doc/refman/5.7/en/create-index.html

func (*CreateIndexStmt) Accept ¶ 

func (n *CreateIndexStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*CreateIndexStmt) Restore ¶ 

func (n *CreateIndexStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type CreateTableStmt ¶ 

type CreateTableStmt struct {
	IfNotExists bool
	Table       *TableName
	ReferTable  *TableName
	Cols        []*ColumnDef
	Constraints []*Constraint
	Options     []*TableOption
	Partition   *PartitionOptions
	OnDuplicate OnDuplicateKeyHandlingType
	Select      ResultSetNode
	// contains filtered or unexported fields
}

CreateTableStmt is a statement to create a table. See https://dev.mysql.com/doc/refman/5.7/en/create-table.html

func (*CreateTableStmt) Accept ¶ 

func (n *CreateTableStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*CreateTableStmt) Restore ¶ 

func (n *CreateTableStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type CreateUserStmt ¶ 

type CreateUserStmt struct {
	IsCreateRole          bool
	IfNotExists           bool
	Specs                 []*UserSpec
	TLSOptions            []*TLSOption
	ResourceOptions       []*ResourceOption
	PasswordOrLockOptions []*PasswordOrLockOption
	// contains filtered or unexported fields
}

CreateUserStmt creates user account. See https://dev.mysql.com/doc/refman/5.7/en/create-user.html

func (*CreateUserStmt) Accept ¶ 

func (n *CreateUserStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*CreateUserStmt) Restore ¶ 

func (n *CreateUserStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*CreateUserStmt) SecureText ¶ 

func (n *CreateUserStmt) SecureText() string

SecureText implements SensitiveStatement interface.

type CreateViewStmt ¶ 

type CreateViewStmt struct {
	OrReplace   bool
	ViewName    *TableName
	Cols        []model.CIStr
	Select      StmtNode
	SchemaCols  []model.CIStr
	Algorithm   model.ViewAlgorithm
	Definer     *auth.UserIdentity
	Security    model.ViewSecurity
	CheckOption model.ViewCheckOption
	// contains filtered or unexported fields
}

CreateViewStmt is a statement to create a View. See https://dev.mysql.com/doc/refman/5.7/en/create-view.html

func (*CreateViewStmt) Accept ¶ 

func (n *CreateViewStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*CreateViewStmt) Restore ¶ 

func (n *CreateViewStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type DDLNode ¶ 

type DDLNode interface {
	StmtNode
	// contains filtered or unexported methods
}

DDLNode represents DDL statement node.

type DMLNode ¶ 

type DMLNode interface {
	StmtNode
	// contains filtered or unexported methods
}

DMLNode represents DML statement node.

type DatabaseOption ¶ 

type DatabaseOption struct {
	Tp    DatabaseOptionType
	Value string
}

DatabaseOption represents database option.

func (*DatabaseOption) Restore ¶ 

func (n *DatabaseOption) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type DatabaseOptionType ¶ 

type DatabaseOptionType int

DatabaseOptionType is the type for database options. 

const (
	DatabaseOptionNone DatabaseOptionType = iota
	DatabaseOptionCharset
	DatabaseOptionCollate
)

Database option types.

type DateArithType ¶ 

type DateArithType byte

DateArithType is type for DateArith type. 

const (
	// DateArithAdd is to run adddate or date_add function option.
	// See https://dev.mysql.com/doc/refman/5.7/en/date-and-time-functions.html#function_adddate
	// See https://dev.mysql.com/doc/refman/5.7/en/date-and-time-functions.html#function_date-add
	DateArithAdd DateArithType = iota + 1
	// DateArithSub is to run subdate or date_sub function option.
	// See https://dev.mysql.com/doc/refman/5.7/en/date-and-time-functions.html#function_subdate
	// See https://dev.mysql.com/doc/refman/5.7/en/date-and-time-functions.html#function_date-sub
	DateArithSub
)

type DeallocateStmt ¶ 

type DeallocateStmt struct {
	Name string
	// contains filtered or unexported fields
}

DeallocateStmt is a statement to release PreparedStmt. See https://dev.mysql.com/doc/refman/5.7/en/deallocate-prepare.html

func (*DeallocateStmt) Accept ¶ 

func (n *DeallocateStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*DeallocateStmt) Restore ¶ 

func (n *DeallocateStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type DefaultExpr ¶ 

type DefaultExpr struct {

	// Name is the column name.
	Name *ColumnName
	// contains filtered or unexported fields
}

DefaultExpr is the default expression using default value for a column.

func (*DefaultExpr) Accept ¶ 

func (n *DefaultExpr) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*DefaultExpr) Format ¶ 

func (n *DefaultExpr) Format(w io.Writer)

Format the ExprNode into a Writer.

func (*DefaultExpr) GetFlag ¶ 

func (en *DefaultExpr) GetFlag() uint64

GetFlag implements ExprNode interface.

func (*DefaultExpr) GetType ¶ 

func (en *DefaultExpr) GetType() *types.FieldType

GetType implements ExprNode interface.

func (*DefaultExpr) Restore ¶ 

func (n *DefaultExpr) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*DefaultExpr) SetFlag ¶ 

func (en *DefaultExpr) SetFlag(flag uint64)

SetFlag implements ExprNode interface.

func (*DefaultExpr) SetType ¶ 

func (en *DefaultExpr) SetType(tp *types.FieldType)

SetType implements ExprNode interface.

type DeleteStmt ¶ 

type DeleteStmt struct {

	// TableRefs is used in both single table and multiple table delete statement.
	TableRefs *TableRefsClause
	// Tables is only used in multiple table delete statement.
	Tables       *DeleteTableList
	Where        ExprNode
	Order        *OrderByClause
	Limit        *Limit
	Priority     mysql.PriorityEnum
	IgnoreErr    bool
	Quick        bool
	IsMultiTable bool
	BeforeFrom   bool
	// TableHints represents the table level Optimizer Hint for join type.
	TableHints []*TableOptimizerHint
	// contains filtered or unexported fields
}

DeleteStmt is a statement to delete rows from table. See https://dev.mysql.com/doc/refman/5.7/en/delete.html

func (*DeleteStmt) Accept ¶ 

func (n *DeleteStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*DeleteStmt) Restore ¶ 

func (n *DeleteStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type DeleteTableList ¶ 

type DeleteTableList struct {
	Tables []*TableName
	// contains filtered or unexported fields
}

DeleteTableList is the tablelist used in delete statement multi-table mode.

func (*DeleteTableList) Accept ¶ 

func (n *DeleteTableList) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*DeleteTableList) Restore ¶ 

func (n *DeleteTableList) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*DeleteTableList) SetText ¶ 

func (n *DeleteTableList) SetText(text string)

SetText implements Node interface.

func (*DeleteTableList) Text ¶ 

func (n *DeleteTableList) Text() string

Text implements Node interface.

type DoStmt ¶ 

type DoStmt struct {
	Exprs []ExprNode
	// contains filtered or unexported fields
}

DoStmt is the struct for DO statement.

func (*DoStmt) Accept ¶ 

func (n *DoStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*DoStmt) Restore ¶ 

func (n *DoStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type DropBindingStmt ¶ 

type DropBindingStmt struct {
	GlobalScope bool
	OriginSel   StmtNode
	// contains filtered or unexported fields
}

DropBindingStmt deletes sql binding hint.

func (*DropBindingStmt) Accept ¶ 

func (n *DropBindingStmt) Accept(v Visitor) (Node, bool)

func (*DropBindingStmt) Restore ¶ 

func (n *DropBindingStmt) Restore(ctx *RestoreCtx) error

type DropDatabaseStmt ¶ 

type DropDatabaseStmt struct {
	IfExists bool
	Name     string
	// contains filtered or unexported fields
}

DropDatabaseStmt is a statement to drop a database and all tables in the database. See https://dev.mysql.com/doc/refman/5.7/en/drop-database.html

func (*DropDatabaseStmt) Accept ¶ 

func (n *DropDatabaseStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*DropDatabaseStmt) Restore ¶ 

func (n *DropDatabaseStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type DropIndexStmt ¶ 

type DropIndexStmt struct {
	IfExists  bool
	IndexName string
	Table     *TableName
	// contains filtered or unexported fields
}

DropIndexStmt is a statement to drop the index. See https://dev.mysql.com/doc/refman/5.7/en/drop-index.html

func (*DropIndexStmt) Accept ¶ 

func (n *DropIndexStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*DropIndexStmt) Restore ¶ 

func (n *DropIndexStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type DropStatsStmt ¶ 

type DropStatsStmt struct {
	Table *TableName
	// contains filtered or unexported fields
}

DropStatsStmt is used to drop table statistics.

func (*DropStatsStmt) Accept ¶ 

func (n *DropStatsStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*DropStatsStmt) Restore ¶ 

func (n *DropStatsStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type DropTableStmt ¶ 

type DropTableStmt struct {
	IfExists bool
	Tables   []*TableName
	IsView   bool
	// contains filtered or unexported fields
}

DropTableStmt is a statement to drop one or more tables. See https://dev.mysql.com/doc/refman/5.7/en/drop-table.html

func (*DropTableStmt) Accept ¶ 

func (n *DropTableStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*DropTableStmt) Restore ¶ 

func (n *DropTableStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type DropUserStmt ¶ 

type DropUserStmt struct {
	IfExists   bool
	IsDropRole bool
	UserList   []*auth.UserIdentity
	// contains filtered or unexported fields
}

DropUserStmt creates user account. See http://dev.mysql.com/doc/refman/5.7/en/drop-user.html

func (*DropUserStmt) Accept ¶ 

func (n *DropUserStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*DropUserStmt) Restore ¶ 

func (n *DropUserStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type ExecuteStmt ¶ 

type ExecuteStmt struct {
	Name      string
	UsingVars []ExprNode
	ExecID    uint32
	// contains filtered or unexported fields
}

ExecuteStmt is a statement to execute PreparedStmt. See https://dev.mysql.com/doc/refman/5.7/en/execute.html

func (*ExecuteStmt) Accept ¶ 

func (n *ExecuteStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*ExecuteStmt) Restore ¶ 

func (n *ExecuteStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type ExistsSubqueryExpr ¶ 

type ExistsSubqueryExpr struct {

	// Sel is the subquery, may be rewritten to other type of expression.
	Sel ExprNode
	// Not is true, the expression is "not exists".
	Not bool
	// contains filtered or unexported fields
}

ExistsSubqueryExpr is the expression for "exists (select ...)". See https://dev.mysql.com/doc/refman/5.7/en/exists-and-not-exists-subqueries.html

func (*ExistsSubqueryExpr) Accept ¶ 

func (n *ExistsSubqueryExpr) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*ExistsSubqueryExpr) Format ¶ 

func (n *ExistsSubqueryExpr) Format(w io.Writer)

Format the ExprNode into a Writer.

func (*ExistsSubqueryExpr) GetFlag ¶ 

func (en *ExistsSubqueryExpr) GetFlag() uint64

GetFlag implements ExprNode interface.

func (*ExistsSubqueryExpr) GetType ¶ 

func (en *ExistsSubqueryExpr) GetType() *types.FieldType

GetType implements ExprNode interface.

func (*ExistsSubqueryExpr) Restore ¶ 

func (n *ExistsSubqueryExpr) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*ExistsSubqueryExpr) SetFlag ¶ 

func (en *ExistsSubqueryExpr) SetFlag(flag uint64)

SetFlag implements ExprNode interface.

func (*ExistsSubqueryExpr) SetType ¶ 

func (en *ExistsSubqueryExpr) SetType(tp *types.FieldType)

SetType implements ExprNode interface.

type ExplainForStmt ¶ 

type ExplainForStmt struct {
	Format       string
	ConnectionID uint64
	// contains filtered or unexported fields
}

ExplainForStmt is a statement to provite information about how is SQL statement executeing in connection #ConnectionID See https://dev.mysql.com/doc/refman/5.7/en/explain.html

func (*ExplainForStmt) Accept ¶ 

func (n *ExplainForStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*ExplainForStmt) Restore ¶ 

func (n *ExplainForStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type ExplainStmt ¶ 

type ExplainStmt struct {
	Stmt    StmtNode
	Format  string
	Analyze bool
	// contains filtered or unexported fields
}

ExplainStmt is a statement to provide information about how is SQL statement executed or get columns information in a table. See https://dev.mysql.com/doc/refman/5.7/en/explain.html

func (*ExplainStmt) Accept ¶ 

func (n *ExplainStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*ExplainStmt) Restore ¶ 

func (n *ExplainStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type ExprNode ¶ 

type ExprNode interface {
	// Node is embedded in ExprNode.
	Node
	// SetType sets evaluation type to the expression.
	SetType(tp *types.FieldType)
	// GetType gets the evaluation type of the expression.
	GetType() *types.FieldType
	// SetFlag sets flag to the expression.
	// Flag indicates whether the expression contains
	// parameter marker, reference, aggregate function...
	SetFlag(flag uint64)
	// GetFlag returns the flag of the expression.
	GetFlag() uint64

	// Format formats the AST into a writer.
	Format(w io.Writer)
}

ExprNode is a node that can be evaluated. Name of implementations should have 'Expr' suffix.

type FieldItem ¶ 

type FieldItem struct {
	Type  int
	Value string
}

type FieldList ¶ 

type FieldList struct {
	Fields []*SelectField
	// contains filtered or unexported fields
}

FieldList represents field list in select statement.

func (*FieldList) Accept ¶ 

func (n *FieldList) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*FieldList) Restore ¶ 

func (n *FieldList) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*FieldList) SetText ¶ 

func (n *FieldList) SetText(text string)

SetText implements Node interface.

func (*FieldList) Text ¶ 

func (n *FieldList) Text() string

Text implements Node interface.

type FieldsClause ¶ 

type FieldsClause struct {
	Terminated string
	Enclosed   byte
	Escaped    byte
}

FieldsClause represents fields references clause in load data statement.

func (*FieldsClause) Restore ¶ 

func (n *FieldsClause) Restore(ctx *RestoreCtx) error

Restore for FieldsClause

type FloatOpt ¶ 

type FloatOpt struct {
	Flen    int
	Decimal int
}

FloatOpt is used for parsing floating-point type option from SQL. See http://dev.mysql.com/doc/refman/5.7/en/floating-point-types.html

type FlushStmt ¶ 

type FlushStmt struct {
	Tp              FlushStmtType // Privileges/Tables/...
	NoWriteToBinLog bool
	Tables          []*TableName // For FlushTableStmt, if Tables is empty, it means flush all tables.
	ReadLock        bool
	Plugins         []string
	// contains filtered or unexported fields
}

FlushStmt is a statement to flush tables/privileges/optimizer costs and so on.

func (*FlushStmt) Accept ¶ 

func (n *FlushStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*FlushStmt) Restore ¶ 

func (n *FlushStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type FlushStmtType ¶ 

type FlushStmtType int

FlushStmtType is the type for FLUSH statement. 

const (
	FlushNone FlushStmtType = iota
	FlushTables
	FlushPrivileges
	FlushStatus
	FlushTiDBPlugin
)

Flush statement types.

type FrameBound ¶ 

type FrameBound struct {
	Type      BoundType
	UnBounded bool
	Expr      ExprNode
	// `Unit` is used to indicate the units in which the `Expr` should be interpreted.
	// For example: '2:30' MINUTE_SECOND.
	Unit ExprNode
	// contains filtered or unexported fields
}

FrameBound represents frame bound.

func (*FrameBound) Accept ¶ 

func (n *FrameBound) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*FrameBound) Restore ¶ 

func (n *FrameBound) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*FrameBound) SetText ¶ 

func (n *FrameBound) SetText(text string)

SetText implements Node interface.

func (*FrameBound) Text ¶ 

func (n *FrameBound) Text() string

Text implements Node interface.

type FrameClause ¶ 

type FrameClause struct {
	Type   FrameType
	Extent FrameExtent
	// contains filtered or unexported fields
}

FrameClause represents frame clause.

func (*FrameClause) Accept ¶ 

func (n *FrameClause) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*FrameClause) Restore ¶ 

func (n *FrameClause) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*FrameClause) SetText ¶ 

func (n *FrameClause) SetText(text string)

SetText implements Node interface.

func (*FrameClause) Text ¶ 

func (n *FrameClause) Text() string

Text implements Node interface.

type FrameExtent ¶ 

type FrameExtent struct {
	Start FrameBound
	End   FrameBound
}

FrameExtent represents frame extent.

type FrameType ¶ 

type FrameType int

FrameType is the type of window function frame.

type FuncCallExpr ¶ 

type FuncCallExpr struct {

	// FnName is the function name.
	FnName model.CIStr
	// Args is the function args.
	Args []ExprNode
	// contains filtered or unexported fields
}

FuncCallExpr is for function expression.

func (*FuncCallExpr) Accept ¶ 

func (n *FuncCallExpr) Accept(v Visitor) (Node, bool)

Accept implements Node interface.

func (*FuncCallExpr) Format ¶ 

func (n *FuncCallExpr) Format(w io.Writer)

Format the ExprNode into a Writer.

func (*FuncCallExpr) Restore ¶ 

func (n *FuncCallExpr) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type FuncCastExpr ¶ 

type FuncCastExpr struct {

	// Expr is the expression to be converted.
	Expr ExprNode
	// Tp is the conversion type.
	Tp *types.FieldType
	// FunctionType is either Cast, Convert or Binary.
	FunctionType CastFunctionType
	// contains filtered or unexported fields
}

FuncCastExpr is the cast function converting value to another type, e.g, cast(expr AS signed). See https://dev.mysql.com/doc/refman/5.7/en/cast-functions.html

func (*FuncCastExpr) Accept ¶ 

func (n *FuncCastExpr) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*FuncCastExpr) Format ¶ 

func (n *FuncCastExpr) Format(w io.Writer)

Format the ExprNode into a Writer.

func (*FuncCastExpr) Restore ¶ 

func (n *FuncCastExpr) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type FuncNode ¶ 

type FuncNode interface {
	ExprNode
	// contains filtered or unexported methods
}

FuncNode represents function call expression node.

type GrantLevel ¶ 

type GrantLevel struct {
	Level     GrantLevelType
	DBName    string
	TableName string
}

GrantLevel is used for store the privilege scope.

func (*GrantLevel) Restore ¶ 

func (n *GrantLevel) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type GrantLevelType ¶ 

type GrantLevelType int

GrantLevelType is the type for grant level. 

const (
	// GrantLevelNone is the dummy const for default value.
	GrantLevelNone GrantLevelType = iota + 1
	// GrantLevelGlobal means the privileges are administrative or apply to all databases on a given server.
	GrantLevelGlobal
	// GrantLevelDB means the privileges apply to all objects in a given database.
	GrantLevelDB
	// GrantLevelTable means the privileges apply to all columns in a given table.
	GrantLevelTable
)

type GrantRoleStmt ¶ 

type GrantRoleStmt struct {
	Roles []*auth.RoleIdentity
	Users []*auth.UserIdentity
	// contains filtered or unexported fields
}

GrantRoleStmt is the struct for GRANT TO statement.

func (*GrantRoleStmt) Accept ¶ 

func (n *GrantRoleStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*GrantRoleStmt) Restore ¶ 

func (n *GrantRoleStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*GrantRoleStmt) SecureText ¶ 

func (n *GrantRoleStmt) SecureText() string

SecureText implements SensitiveStatement interface.

type GrantStmt ¶ 

type GrantStmt struct {
	Privs      []*PrivElem
	ObjectType ObjectTypeType
	Level      *GrantLevel
	Users      []*UserSpec
	TLSOptions []*TLSOption
	WithGrant  bool
	// contains filtered or unexported fields
}

GrantStmt is the struct for GRANT statement.

func (*GrantStmt) Accept ¶ 

func (n *GrantStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*GrantStmt) Restore ¶ 

func (n *GrantStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*GrantStmt) SecureText ¶ 

func (n *GrantStmt) SecureText() string

SecureText implements SensitiveStatement interface.

type GroupByClause ¶ 

type GroupByClause struct {
	Items []*ByItem
	// contains filtered or unexported fields
}

GroupByClause represents group by clause.

func (*GroupByClause) Accept ¶ 

func (n *GroupByClause) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*GroupByClause) Restore ¶ 

func (n *GroupByClause) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*GroupByClause) SetText ¶ 

func (n *GroupByClause) SetText(text string)

SetText implements Node interface.

func (*GroupByClause) Text ¶ 

func (n *GroupByClause) Text() string

Text implements Node interface.

type HandleRange ¶ 

type HandleRange struct {
	Begin int64
	End   int64
}

HandleRange represents a range where handle value >= Begin and < End.

type HavingClause ¶ 

type HavingClause struct {
	Expr ExprNode
	// contains filtered or unexported fields
}

HavingClause represents having clause.

func (*HavingClause) Accept ¶ 

func (n *HavingClause) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*HavingClause) Restore ¶ 

func (n *HavingClause) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*HavingClause) SetText ¶ 

func (n *HavingClause) SetText(text string)

SetText implements Node interface.

func (*HavingClause) Text ¶ 

func (n *HavingClause) Text() string

Text implements Node interface.

type HintTable ¶ 

type HintTable struct {
	TableName model.CIStr
	QBName    model.CIStr
}

HintTable is table in the hint. It may have query block info.

func (*HintTable) Restore ¶ 

func (ht *HintTable) Restore(ctx *RestoreCtx)

type Ident ¶ 

type Ident struct {
	Schema model.CIStr
	Name   model.CIStr
}

Ident is the table identifier composed of schema name and table name.

func (Ident) String ¶ 

func (i Ident) String() string

String implements fmt.Stringer interface.

type IndexColName ¶ 

type IndexColName struct {
	Column *ColumnName
	Length int
	// contains filtered or unexported fields
}

IndexColName is used for parsing index column name from SQL.

func (*IndexColName) Accept ¶ 

func (n *IndexColName) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*IndexColName) Restore ¶ 

func (n *IndexColName) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*IndexColName) SetText ¶ 

func (n *IndexColName) SetText(text string)

SetText implements Node interface.

func (*IndexColName) Text ¶ 

func (n *IndexColName) Text() string

Text implements Node interface.

type IndexHint ¶ 

type IndexHint struct {
	IndexNames []model.CIStr
	HintType   IndexHintType
	HintScope  IndexHintScope
}

IndexHint represents a hint for optimizer to use/ignore/force for join/order by/group by.

func (*IndexHint) Restore ¶ 

func (n *IndexHint) Restore(ctx *RestoreCtx) error

IndexHint Restore (The const field uses switch to facilitate understanding)

type IndexHintScope ¶ 

type IndexHintScope int

IndexHintScope is the type for index hint for join, order by or group by. 

const (
	HintForScan    IndexHintScope = 1
	HintForJoin    IndexHintScope = 2
	HintForOrderBy IndexHintScope = 3
	HintForGroupBy IndexHintScope = 4
)

Index hint scopes.

type IndexHintType ¶ 

type IndexHintType int

IndexHintType is the type for index hint use, ignore or force. 

const (
	HintUse    IndexHintType = 1
	HintIgnore IndexHintType = 2
	HintForce  IndexHintType = 3
)

IndexHintUseType values.

type IndexOption ¶ 

type IndexOption struct {
	KeyBlockSize uint64
	Tp           model.IndexType
	Comment      string
	// contains filtered or unexported fields
}

IndexOption is the index options. 

  KEY_BLOCK_SIZE [=] value
| index_type
| WITH PARSER parser_name
| COMMENT 'string'

See http://dev.mysql.com/doc/refman/5.7/en/create-table.html

func (*IndexOption) Accept ¶ 

func (n *IndexOption) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*IndexOption) Restore ¶ 

func (n *IndexOption) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*IndexOption) SetText ¶ 

func (n *IndexOption) SetText(text string)

SetText implements Node interface.

func (*IndexOption) Text ¶ 

func (n *IndexOption) Text() string

Text implements Node interface.

type InsertStmt ¶ 

type InsertStmt struct {
	IsReplace   bool
	IgnoreErr   bool
	Table       *TableRefsClause
	Columns     []*ColumnName
	Lists       [][]ExprNode
	Setlist     []*Assignment
	Priority    mysql.PriorityEnum
	OnDuplicate []*Assignment
	Select      ResultSetNode
	// contains filtered or unexported fields
}

InsertStmt is a statement to insert new rows into an existing table. See https://dev.mysql.com/doc/refman/5.7/en/insert.html

func (*InsertStmt) Accept ¶ 

func (n *InsertStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*InsertStmt) Restore ¶ 

func (n *InsertStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type IsNullExpr ¶ 

type IsNullExpr struct {

	// Expr is the expression to be checked.
	Expr ExprNode
	// Not is true, the expression is "is not null".
	Not bool
	// contains filtered or unexported fields
}

IsNullExpr is the expression for null check.

func (*IsNullExpr) Accept ¶ 

func (n *IsNullExpr) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*IsNullExpr) Format ¶ 

func (n *IsNullExpr) Format(w io.Writer)

Format the ExprNode into a Writer.

func (*IsNullExpr) GetFlag ¶ 

func (en *IsNullExpr) GetFlag() uint64

GetFlag implements ExprNode interface.

func (*IsNullExpr) GetType ¶ 

func (en *IsNullExpr) GetType() *types.FieldType

GetType implements ExprNode interface.

func (*IsNullExpr) Restore ¶ 

func (n *IsNullExpr) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*IsNullExpr) SetFlag ¶ 

func (en *IsNullExpr) SetFlag(flag uint64)

SetFlag implements ExprNode interface.

func (*IsNullExpr) SetType ¶ 

func (en *IsNullExpr) SetType(tp *types.FieldType)

SetType implements ExprNode interface.

type IsTruthExpr ¶ 

type IsTruthExpr struct {

	// Expr is the expression to be checked.
	Expr ExprNode
	// Not is true, the expression is "is not true/false".
	Not bool
	// True indicates checking true or false.
	True int64
	// contains filtered or unexported fields
}

IsTruthExpr is the expression for true/false check.

func (*IsTruthExpr) Accept ¶ 

func (n *IsTruthExpr) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*IsTruthExpr) Format ¶ 

func (n *IsTruthExpr) Format(w io.Writer)

Format the ExprNode into a Writer.

func (*IsTruthExpr) GetFlag ¶ 

func (en *IsTruthExpr) GetFlag() uint64

GetFlag implements ExprNode interface.

func (*IsTruthExpr) GetType ¶ 

func (en *IsTruthExpr) GetType() *types.FieldType

GetType implements ExprNode interface.

func (*IsTruthExpr) Restore ¶ 

func (n *IsTruthExpr) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*IsTruthExpr) SetFlag ¶ 

func (en *IsTruthExpr) SetFlag(flag uint64)

SetFlag implements ExprNode interface.

func (*IsTruthExpr) SetType ¶ 

func (en *IsTruthExpr) SetType(tp *types.FieldType)

SetType implements ExprNode interface.

type Join ¶ 

type Join struct {

	// Left table can be TableSource or JoinNode.
	Left ResultSetNode
	// Right table can be TableSource or JoinNode or nil.
	Right ResultSetNode
	// Tp represents join type.
	Tp JoinType
	// On represents join on condition.
	On *OnCondition
	// Using represents join using clause.
	Using []*ColumnName
	// NaturalJoin represents join is natural join.
	NaturalJoin bool
	// StraightJoin represents a straight join.
	StraightJoin bool
	// contains filtered or unexported fields
}

Join represents table join.

func (*Join) Accept ¶ 

func (n *Join) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*Join) Restore ¶ 

func (n *Join) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*Join) SetText ¶ 

func (n *Join) SetText(text string)

SetText implements Node interface.

func (*Join) Text ¶ 

func (n *Join) Text() string

Text implements Node interface.

type JoinType ¶ 

type JoinType int

JoinType is join type, including cross/left/right/full. 

const (
	// CrossJoin is cross join type.
	CrossJoin JoinType = iota + 1
	// LeftJoin is left Join type.
	LeftJoin
	// RightJoin is right Join type.
	RightJoin
)

type KillStmt ¶ 

type KillStmt struct {

	// Query indicates whether terminate a single query on this connection or the whole connection.
	// If Query is true, terminates the statement the connection is currently executing, but leaves the connection itself intact.
	// If Query is false, terminates the connection associated with the given ConnectionID, after terminating any statement the connection is executing.
	Query        bool
	ConnectionID uint64
	// TiDBExtension is used to indicate whether the user knows he is sending kill statement to the right tidb-server.
	// When the SQL grammar is "KILL TIDB [CONNECTION | QUERY] connectionID", TiDBExtension will be set.
	// It's a special grammar extension in TiDB. This extension exists because, when the connection is:
	// client -> LVS proxy -> TiDB, and type Ctrl+C in client, the following action will be executed:
	// new a connection; kill xxx;
	// kill command may send to the wrong TiDB, because the exists of LVS proxy, and kill the wrong session.
	// So, "KILL TIDB" grammar is introduced, and it REQUIRES DIRECT client -> TiDB TOPOLOGY.
	// TODO: The standard KILL grammar will be supported once we have global connectionID.
	TiDBExtension bool
	// contains filtered or unexported fields
}

KillStmt is a statement to kill a query or connection.

func (*KillStmt) Accept ¶ 

func (n *KillStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*KillStmt) Restore ¶ 

func (n *KillStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type Limit ¶ 

type Limit struct {
	Count  ExprNode
	Offset ExprNode
	// contains filtered or unexported fields
}

Limit is the limit clause.

func (*Limit) Accept ¶ 

func (n *Limit) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*Limit) Restore ¶ 

func (n *Limit) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*Limit) SetText ¶ 

func (n *Limit) SetText(text string)

SetText implements Node interface.

func (*Limit) Text ¶ 

func (n *Limit) Text() string

Text implements Node interface.

type LinesClause ¶ 

type LinesClause struct {
	Starting   string
	Terminated string
}

LinesClause represents lines references clause in load data statement.

func (*LinesClause) Restore ¶ 

func (n *LinesClause) Restore(ctx *RestoreCtx) error

Restore for LinesClause

type LoadDataStmt ¶ 

type LoadDataStmt struct {
	IsLocal           bool
	Path              string
	OnDuplicate       OnDuplicateKeyHandlingType
	Table             *TableName
	Columns           []*ColumnName
	FieldsInfo        *FieldsClause
	LinesInfo         *LinesClause
	IgnoreLines       uint64
	ColumnAssignments []*Assignment

	ColumnsAndUserVars []*ColumnNameOrUserVar
	// contains filtered or unexported fields
}

LoadDataStmt is a statement to load data from a specified file, then insert this rows into an existing table. See https://dev.mysql.com/doc/refman/5.7/en/load-data.html

func (*LoadDataStmt) Accept ¶ 

func (n *LoadDataStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*LoadDataStmt) Restore ¶ 

func (n *LoadDataStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type LoadStatsStmt ¶ 

type LoadStatsStmt struct {
	Path string
	// contains filtered or unexported fields
}

LoadStatsStmt is the statement node for loading statistic.

func (*LoadStatsStmt) Accept ¶ 

func (n *LoadStatsStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*LoadStatsStmt) Restore ¶ 

func (n *LoadStatsStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type LockTablesStmt ¶ 

type LockTablesStmt struct {
	TableLocks []TableLock
	// contains filtered or unexported fields
}

LockTablesStmt is a statement to lock tables.

func (*LockTablesStmt) Accept ¶ 

func (n *LockTablesStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*LockTablesStmt) Restore ¶ 

func (n *LockTablesStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type LockType ¶ 

type LockType byte

LockType is the type for AlterTableSpec. See https://dev.mysql.com/doc/refman/5.7/en/alter-table.html#alter-table-concurrency 

const (
	LockTypeNone LockType = iota + 1
	LockTypeDefault
	LockTypeShared
	LockTypeExclusive
)

Lock Types.

func (LockType) String ¶ 

func (n LockType) String() string

type MatchType ¶ 

type MatchType int

MatchType is the type for reference match type. 

const (
	MatchNone MatchType = iota
	MatchFull
	MatchPartial
	MatchSimple
)

match type

type MaxValueExpr ¶ 

type MaxValueExpr struct {
	// contains filtered or unexported fields
}

MaxValueExpr is the expression for "maxvalue" used in partition.

func (*MaxValueExpr) Accept ¶ 

func (n *MaxValueExpr) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*MaxValueExpr) Format ¶ 

func (n *MaxValueExpr) Format(w io.Writer)

Format the ExprNode into a Writer.

func (*MaxValueExpr) GetFlag ¶ 

func (en *MaxValueExpr) GetFlag() uint64

GetFlag implements ExprNode interface.

func (*MaxValueExpr) GetType ¶ 

func (en *MaxValueExpr) GetType() *types.FieldType

GetType implements ExprNode interface.

func (*MaxValueExpr) Restore ¶ 

func (n *MaxValueExpr) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*MaxValueExpr) SetFlag ¶ 

func (en *MaxValueExpr) SetFlag(flag uint64)

SetFlag implements ExprNode interface.

func (*MaxValueExpr) SetType ¶ 

func (en *MaxValueExpr) SetType(tp *types.FieldType)

SetType implements ExprNode interface.

type Node ¶ 

type Node interface {
	// Restore returns the sql text from ast tree
	Restore(ctx *RestoreCtx) error
	// Accept accepts Visitor to visit itself.
	// The returned node should replace original node.
	// ok returns false to stop visiting.
	//
	// Implementation of this method should first call visitor.Enter,
	// assign the returned node to its method receiver, if skipChildren returns true,
	// children should be skipped. Otherwise, call its children in particular order that
	// later elements depends on former elements. Finally, return visitor.Leave.
	Accept(v Visitor) (node Node, ok bool)
	// Text returns the original text of the element.
	Text() string
	// SetText sets original text to the Node.
	SetText(text string)
}

Node is the basic element of the AST. Interfaces embed Node should have 'Node' name suffix.

type ObjectTypeType ¶ 

type ObjectTypeType int

ObjectTypeType is the type for object type. 

const (
	// ObjectTypeNone is for empty object type.
	ObjectTypeNone ObjectTypeType = iota + 1
	// ObjectTypeTable means the following object is a table.
	ObjectTypeTable
)

func (ObjectTypeType) Restore ¶ 

func (n ObjectTypeType) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type OnCondition ¶ 

type OnCondition struct {
	Expr ExprNode
	// contains filtered or unexported fields
}

OnCondition represents JOIN on condition.

func (*OnCondition) Accept ¶ 

func (n *OnCondition) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*OnCondition) Restore ¶ 

func (n *OnCondition) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*OnCondition) SetText ¶ 

func (n *OnCondition) SetText(text string)

SetText implements Node interface.

func (*OnCondition) Text ¶ 

func (n *OnCondition) Text() string

Text implements Node interface.

type OnDeleteOpt ¶ 

type OnDeleteOpt struct {
	ReferOpt ReferOptionType
	// contains filtered or unexported fields
}

OnDeleteOpt is used for optional on delete clause.

func (*OnDeleteOpt) Accept ¶ 

func (n *OnDeleteOpt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*OnDeleteOpt) Restore ¶ 

func (n *OnDeleteOpt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*OnDeleteOpt) SetText ¶ 

func (n *OnDeleteOpt) SetText(text string)

SetText implements Node interface.

func (*OnDeleteOpt) Text ¶ 

func (n *OnDeleteOpt) Text() string

Text implements Node interface.

type OnDuplicateKeyHandlingType ¶ 

type OnDuplicateKeyHandlingType int

OnDuplicateKeyHandlingType is the option that handle unique key values in 'CREATE TABLE ... SELECT' or `LOAD DATA`. See https://dev.mysql.com/doc/refman/5.7/en/create-table-select.html See https://dev.mysql.com/doc/refman/5.7/en/load-data.html 

const (
	OnDuplicateKeyHandlingError OnDuplicateKeyHandlingType = iota
	OnDuplicateKeyHandlingIgnore
	OnDuplicateKeyHandlingReplace
)

OnDuplicateKeyHandling types

type OnUpdateOpt ¶ 

type OnUpdateOpt struct {
	ReferOpt ReferOptionType
	// contains filtered or unexported fields
}

OnUpdateOpt is used for optional on update clause.

func (*OnUpdateOpt) Accept ¶ 

func (n *OnUpdateOpt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*OnUpdateOpt) Restore ¶ 

func (n *OnUpdateOpt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*OnUpdateOpt) SetText ¶ 

func (n *OnUpdateOpt) SetText(text string)

SetText implements Node interface.

func (*OnUpdateOpt) Text ¶ 

func (n *OnUpdateOpt) Text() string

Text implements Node interface.

type OptBinary ¶ 

type OptBinary struct {
	IsBinary bool
	Charset  string
}

OptBinary is used for parser.

type OrderByClause ¶ 

type OrderByClause struct {
	Items    []*ByItem
	ForUnion bool
	// contains filtered or unexported fields
}

OrderByClause represents order by clause.

func (*OrderByClause) Accept ¶ 

func (n *OrderByClause) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*OrderByClause) Restore ¶ 

func (n *OrderByClause) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*OrderByClause) SetText ¶ 

func (n *OrderByClause) SetText(text string)

SetText implements Node interface.

func (*OrderByClause) Text ¶ 

func (n *OrderByClause) Text() string

Text implements Node interface.

type ParamMarkerExpr ¶ 

type ParamMarkerExpr interface {
	ValueExpr
	SetOrder(int)
}

ParamMarkerExpr expression holds a place for another expression. Used in parsing prepare statement.

type ParenthesesExpr ¶ 

type ParenthesesExpr struct {

	// Expr is the expression in parentheses.
	Expr ExprNode
	// contains filtered or unexported fields
}

ParenthesesExpr is the parentheses expression.

func (*ParenthesesExpr) Accept ¶ 

func (n *ParenthesesExpr) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*ParenthesesExpr) Format ¶ 

func (n *ParenthesesExpr) Format(w io.Writer)

Format the ExprNode into a Writer.

func (*ParenthesesExpr) GetFlag ¶ 

func (en *ParenthesesExpr) GetFlag() uint64

GetFlag implements ExprNode interface.

func (*ParenthesesExpr) GetType ¶ 

func (en *ParenthesesExpr) GetType() *types.FieldType

GetType implements ExprNode interface.

func (*ParenthesesExpr) Restore ¶ 

func (n *ParenthesesExpr) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*ParenthesesExpr) SetFlag ¶ 

func (en *ParenthesesExpr) SetFlag(flag uint64)

SetFlag implements ExprNode interface.

func (*ParenthesesExpr) SetType ¶ 

func (en *ParenthesesExpr) SetType(tp *types.FieldType)

SetType implements ExprNode interface.

type PartitionByClause ¶ 

type PartitionByClause struct {
	Items []*ByItem
	// contains filtered or unexported fields
}

PartitionByClause represents partition by clause.

func (*PartitionByClause) Accept ¶ 

func (n *PartitionByClause) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*PartitionByClause) Restore ¶ 

func (n *PartitionByClause) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*PartitionByClause) SetText ¶ 

func (n *PartitionByClause) SetText(text string)

SetText implements Node interface.

func (*PartitionByClause) Text ¶ 

func (n *PartitionByClause) Text() string

Text implements Node interface.

type PartitionDefinition ¶ 

type PartitionDefinition struct {
	Name    model.CIStr
	Clause  PartitionDefinitionClause
	Options []*TableOption
	Sub     []*SubPartitionDefinition
}

PartitionDefinition defines a single partition.

func (*PartitionDefinition) Comment ¶ 

func (n *PartitionDefinition) Comment() (string, bool)

Comment returns the comment option given to this definition. The second return value indicates if the comment option exists.

func (*PartitionDefinition) Restore ¶ 

func (n *PartitionDefinition) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type PartitionDefinitionClause ¶ 

type PartitionDefinitionClause interface {

	// Validate checks if the clause is consistent with the given options.
	// `pt` can be 0 and `columns` can be -1 to skip checking the clause against
	// the partition type or number of columns in the expression list.
	Validate(pt model.PartitionType, columns int) error
	// contains filtered or unexported methods
}

type PartitionDefinitionClauseHistory ¶ 

type PartitionDefinitionClauseHistory struct {
	Current bool
}

func (*PartitionDefinitionClauseHistory) Validate ¶ 

func (n *PartitionDefinitionClauseHistory) Validate(pt model.PartitionType, columns int) error

type PartitionDefinitionClauseIn ¶ 

type PartitionDefinitionClauseIn struct {
	Values [][]ExprNode
}

func (*PartitionDefinitionClauseIn) Validate ¶ 

func (n *PartitionDefinitionClauseIn) Validate(pt model.PartitionType, columns int) error

type PartitionDefinitionClauseLessThan ¶ 

type PartitionDefinitionClauseLessThan struct {
	Exprs []ExprNode
}

func (*PartitionDefinitionClauseLessThan) Validate ¶ 

func (n *PartitionDefinitionClauseLessThan) Validate(pt model.PartitionType, columns int) error

type PartitionDefinitionClauseNone ¶ 

type PartitionDefinitionClauseNone struct{}

func (*PartitionDefinitionClauseNone) Validate ¶ 

func (n *PartitionDefinitionClauseNone) Validate(pt model.PartitionType, columns int) error

type PartitionMethod ¶ 

type PartitionMethod struct {
	// Tp is the type of the partition function
	Tp model.PartitionType
	// Linear is a modifier to the HASH and KEY type for choosing a different
	// algorithm
	Linear bool
	// Expr is an expression used as argument of HASH, RANGE, LIST and
	// SYSTEM_TIME types
	Expr ExprNode
	// ColumnNames is a list of column names used as argument of KEY,
	// RANGE COLUMNS and LIST COLUMNS types
	ColumnNames []*ColumnName
	// Unit is a time unit used as argument of SYSTEM_TIME type
	Unit ValueExpr
	// Limit is a row count used as argument of the SYSTEM_TIME type
	Limit uint64

	// Num is the number of (sub)partitions required by the method.
	Num uint64
}

PartitionMethod describes how partitions or subpartitions are constructed.

func (*PartitionMethod) Restore ¶ 

func (n *PartitionMethod) Restore(ctx *RestoreCtx) error

Restore implements the Node interface

type PartitionOptions ¶ 

type PartitionOptions struct {
	PartitionMethod
	Sub         *PartitionMethod
	Definitions []*PartitionDefinition
	// contains filtered or unexported fields
}

PartitionOptions specifies the partition options.

func (*PartitionOptions) Accept ¶ 

func (n *PartitionOptions) Accept(v Visitor) (Node, bool)

func (*PartitionOptions) Restore ¶ 

func (n *PartitionOptions) Restore(ctx *RestoreCtx) error

func (*PartitionOptions) SetText ¶ 

func (n *PartitionOptions) SetText(text string)

SetText implements Node interface.

func (*PartitionOptions) Text ¶ 

func (n *PartitionOptions) Text() string

Text implements Node interface.

func (*PartitionOptions) Validate ¶ 

func (n *PartitionOptions) Validate() error

Validate checks if the partition is well-formed.

type PasswordOrLockOption ¶ 

type PasswordOrLockOption struct {
	Type  int
	Count int64
}

func (*PasswordOrLockOption) Restore ¶ 

func (p *PasswordOrLockOption) Restore(ctx *RestoreCtx) error

type PatternInExpr ¶ 

type PatternInExpr struct {

	// Expr is the value expression to be compared.
	Expr ExprNode
	// List is the list expression in compare list.
	List []ExprNode
	// Not is true, the expression is "not in".
	Not bool
	// Sel is the subquery, may be rewritten to other type of expression.
	Sel ExprNode
	// contains filtered or unexported fields
}

PatternInExpr is the expression for in operator, like "expr in (1, 2, 3)" or "expr in (select c from t)".

func (*PatternInExpr) Accept ¶ 

func (n *PatternInExpr) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*PatternInExpr) Format ¶ 

func (n *PatternInExpr) Format(w io.Writer)

Format the ExprNode into a Writer.

func (*PatternInExpr) GetFlag ¶ 

func (en *PatternInExpr) GetFlag() uint64

GetFlag implements ExprNode interface.

func (*PatternInExpr) GetType ¶ 

func (en *PatternInExpr) GetType() *types.FieldType

GetType implements ExprNode interface.

func (*PatternInExpr) Restore ¶ 

func (n *PatternInExpr) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*PatternInExpr) SetFlag ¶ 

func (en *PatternInExpr) SetFlag(flag uint64)

SetFlag implements ExprNode interface.

func (*PatternInExpr) SetType ¶ 

func (en *PatternInExpr) SetType(tp *types.FieldType)

SetType implements ExprNode interface.

type PatternLikeExpr ¶ 

type PatternLikeExpr struct {

	// Expr is the expression to be checked.
	Expr ExprNode
	// Pattern is the like expression.
	Pattern ExprNode
	// Not is true, the expression is "not like".
	Not bool

	Escape byte

	PatChars []byte
	PatTypes []byte
	// contains filtered or unexported fields
}

PatternLikeExpr is the expression for like operator, e.g, expr like "%123%"

func (*PatternLikeExpr) Accept ¶ 

func (n *PatternLikeExpr) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*PatternLikeExpr) Format ¶ 

func (n *PatternLikeExpr) Format(w io.Writer)

Format the ExprNode into a Writer.

func (*PatternLikeExpr) GetFlag ¶ 

func (en *PatternLikeExpr) GetFlag() uint64

GetFlag implements ExprNode interface.

func (*PatternLikeExpr) GetType ¶ 

func (en *PatternLikeExpr) GetType() *types.FieldType

GetType implements ExprNode interface.

func (*PatternLikeExpr) Restore ¶ 

func (n *PatternLikeExpr) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*PatternLikeExpr) SetFlag ¶ 

func (en *PatternLikeExpr) SetFlag(flag uint64)

SetFlag implements ExprNode interface.

func (*PatternLikeExpr) SetType ¶ 

func (en *PatternLikeExpr) SetType(tp *types.FieldType)

SetType implements ExprNode interface.

type PatternRegexpExpr ¶ 

type PatternRegexpExpr struct {

	// Expr is the expression to be checked.
	Expr ExprNode
	// Pattern is the expression for pattern.
	Pattern ExprNode
	// Not is true, the expression is "not rlike",
	Not bool

	// Re is the compiled regexp.
	Re *regexp.Regexp
	// Sexpr is the string for Expr expression.
	Sexpr *string
	// contains filtered or unexported fields
}

PatternRegexpExpr is the pattern expression for pattern match.

func (*PatternRegexpExpr) Accept ¶ 

func (n *PatternRegexpExpr) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*PatternRegexpExpr) Format ¶ 

func (n *PatternRegexpExpr) Format(w io.Writer)

Format the ExprNode into a Writer.

func (*PatternRegexpExpr) GetFlag ¶ 

func (en *PatternRegexpExpr) GetFlag() uint64

GetFlag implements ExprNode interface.

func (*PatternRegexpExpr) GetType ¶ 

func (en *PatternRegexpExpr) GetType() *types.FieldType

GetType implements ExprNode interface.

func (*PatternRegexpExpr) Restore ¶ 

func (n *PatternRegexpExpr) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*PatternRegexpExpr) SetFlag ¶ 

func (en *PatternRegexpExpr) SetFlag(flag uint64)

SetFlag implements ExprNode interface.

func (*PatternRegexpExpr) SetType ¶ 

func (en *PatternRegexpExpr) SetType(tp *types.FieldType)

SetType implements ExprNode interface.

type PositionExpr ¶ 

type PositionExpr struct {

	// N is the position, started from 1 now.
	N int
	// P is the parameterized position.
	P ExprNode
	// Refer is the result field the position refers to.
	Refer *ResultField
	// contains filtered or unexported fields
}

PositionExpr is the expression for order by and group by position. MySQL use position expression started from 1, it looks a little confused inner. maybe later we will use 0 at first.

func (*PositionExpr) Accept ¶ 

func (n *PositionExpr) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*PositionExpr) Format ¶ 

func (n *PositionExpr) Format(w io.Writer)

Format the ExprNode into a Writer.

func (*PositionExpr) GetFlag ¶ 

func (en *PositionExpr) GetFlag() uint64

GetFlag implements ExprNode interface.

func (*PositionExpr) GetType ¶ 

func (en *PositionExpr) GetType() *types.FieldType

GetType implements ExprNode interface.

func (*PositionExpr) Restore ¶ 

func (n *PositionExpr) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*PositionExpr) SetFlag ¶ 

func (en *PositionExpr) SetFlag(flag uint64)

SetFlag implements ExprNode interface.

func (*PositionExpr) SetType ¶ 

func (en *PositionExpr) SetType(tp *types.FieldType)

SetType implements ExprNode interface.

type PrepareStmt ¶ 

type PrepareStmt struct {
	Name    string
	SQLText string
	SQLVar  *VariableExpr
	// contains filtered or unexported fields
}

PrepareStmt is a statement to prepares a SQL statement which contains placeholders, and it is executed with ExecuteStmt and released with DeallocateStmt. See https://dev.mysql.com/doc/refman/5.7/en/prepare.html

func (*PrepareStmt) Accept ¶ 

func (n *PrepareStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*PrepareStmt) Restore ¶ 

func (n *PrepareStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type Prepared ¶ 

type Prepared struct {
	Stmt          StmtNode
	StmtType      string
	Params        []ParamMarkerExpr
	SchemaVersion int64
	UseCache      bool
}

Prepared represents a prepared statement.

type PrivElem ¶ 

type PrivElem struct {
	Priv mysql.PrivilegeType
	Cols []*ColumnName
	// contains filtered or unexported fields
}

PrivElem is the privilege type and optional column list.

func (*PrivElem) Accept ¶ 

func (n *PrivElem) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*PrivElem) Restore ¶ 

func (n *PrivElem) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*PrivElem) SetText ¶ 

func (n *PrivElem) SetText(text string)

SetText implements Node interface.

func (*PrivElem) Text ¶ 

func (n *PrivElem) Text() string

Text implements Node interface.

type RecoverTableStmt ¶ 

type RecoverTableStmt struct {
	JobID  int64
	Table  *TableName
	JobNum int64
	// contains filtered or unexported fields
}

RecoverTableStmt is a statement to recover dropped table.

func (*RecoverTableStmt) Accept ¶ 

func (n *RecoverTableStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*RecoverTableStmt) Restore ¶ 

func (n *RecoverTableStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type ReferOptionType ¶ 

type ReferOptionType int

ReferOptionType is the type for refer options. 

const (
	ReferOptionNoOption ReferOptionType = iota
	ReferOptionRestrict
	ReferOptionCascade
	ReferOptionSetNull
	ReferOptionNoAction
	ReferOptionSetDefault
)

Refer option types.

func (ReferOptionType) String ¶ 

func (r ReferOptionType) String() string

String implements fmt.Stringer interface.

type ReferenceDef ¶ 

type ReferenceDef struct {
	Table         *TableName
	IndexColNames []*IndexColName
	OnDelete      *OnDeleteOpt
	OnUpdate      *OnUpdateOpt
	Match         MatchType
	// contains filtered or unexported fields
}

ReferenceDef is used for parsing foreign key reference option from SQL. See http://dev.mysql.com/doc/refman/5.7/en/create-table-foreign-keys.html

func (*ReferenceDef) Accept ¶ 

func (n *ReferenceDef) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*ReferenceDef) Restore ¶ 

func (n *ReferenceDef) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*ReferenceDef) SetText ¶ 

func (n *ReferenceDef) SetText(text string)

SetText implements Node interface.

func (*ReferenceDef) Text ¶ 

func (n *ReferenceDef) Text() string

Text implements Node interface.

type RenameTableStmt ¶ 

type RenameTableStmt struct {
	OldTable *TableName
	NewTable *TableName

	// TableToTables is only useful for syncer which depends heavily on tidb parser to do some dirty work for now.
	// TODO: Refactor this when you are going to add full support for multiple schema changes.
	TableToTables []*TableToTable
	// contains filtered or unexported fields
}

RenameTableStmt is a statement to rename a table. See http://dev.mysql.com/doc/refman/5.7/en/rename-table.html

func (*RenameTableStmt) Accept ¶ 

func (n *RenameTableStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*RenameTableStmt) Restore ¶ 

func (n *RenameTableStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type ResourceOption ¶ 

type ResourceOption struct {
	Type  int
	Count int64
}

func (*ResourceOption) Restore ¶ 

func (r *ResourceOption) Restore(ctx *RestoreCtx) error

type ResultField ¶ 

type ResultField struct {
	Column       *model.ColumnInfo
	ColumnAsName model.CIStr
	Table        *model.TableInfo
	TableAsName  model.CIStr
	DBName       model.CIStr

	// Expr represents the expression for the result field. If it is generated from a select field, it would
	// be the expression of that select field, otherwise the type would be ValueExpr and value
	// will be set for every retrieved row.
	Expr      ExprNode
	TableName *TableName
	// Referenced indicates the result field has been referenced or not.
	// If not, we don't need to get the values.
	Referenced bool
}

ResultField represents a result field which can be a column from a table, or an expression in select field. It is a generated property during binding process. ResultField is the key element to evaluate a ColumnNameExpr. After resolving process, every ColumnNameExpr will be resolved to a ResultField. During execution, every row retrieved from table will set the row value to ResultFields of that table, so ColumnNameExpr resolved to that ResultField can be easily evaluated.

type ResultSetNode ¶ 

type ResultSetNode interface {
	Node
}

ResultSetNode interface has a ResultFields property, represents a Node that returns result set. Implementations include SelectStmt, SubqueryExpr, TableSource, TableName and Join.

type RevokeRoleStmt ¶ 

type RevokeRoleStmt struct {
	Roles []*auth.RoleIdentity
	Users []*auth.UserIdentity
	// contains filtered or unexported fields
}

RevokeStmt is the struct for REVOKE statement.

func (*RevokeRoleStmt) Accept ¶ 

func (n *RevokeRoleStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*RevokeRoleStmt) Restore ¶ 

func (n *RevokeRoleStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type RevokeStmt ¶ 

type RevokeStmt struct {
	Privs      []*PrivElem
	ObjectType ObjectTypeType
	Level      *GrantLevel
	Users      []*UserSpec
	// contains filtered or unexported fields
}

RevokeStmt is the struct for REVOKE statement.

func (*RevokeStmt) Accept ¶ 

func (n *RevokeStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*RevokeStmt) Restore ¶ 

func (n *RevokeStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type RollbackStmt ¶ 

type RollbackStmt struct {
	// contains filtered or unexported fields
}

RollbackStmt is a statement to roll back the current transaction. See https://dev.mysql.com/doc/refman/5.7/en/commit.html

func (*RollbackStmt) Accept ¶ 

func (n *RollbackStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*RollbackStmt) Restore ¶ 

func (n *RollbackStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type RowExpr ¶ 

type RowExpr struct {
	Values []ExprNode
	// contains filtered or unexported fields
}

RowExpr is the expression for row constructor. See https://dev.mysql.com/doc/refman/5.7/en/row-subqueries.html

func (*RowExpr) Accept ¶ 

func (n *RowExpr) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*RowExpr) Format ¶ 

func (n *RowExpr) Format(w io.Writer)

Format the ExprNode into a Writer.

func (*RowExpr) GetFlag ¶ 

func (en *RowExpr) GetFlag() uint64

GetFlag implements ExprNode interface.

func (*RowExpr) GetType ¶ 

func (en *RowExpr) GetType() *types.FieldType

GetType implements ExprNode interface.

func (*RowExpr) Restore ¶ 

func (n *RowExpr) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*RowExpr) SetFlag ¶ 

func (en *RowExpr) SetFlag(flag uint64)

SetFlag implements ExprNode interface.

func (*RowExpr) SetType ¶ 

func (en *RowExpr) SetType(tp *types.FieldType)

SetType implements ExprNode interface.

type SelectField ¶ 

type SelectField struct {

	// Offset is used to get original text.
	Offset int
	// WildCard is not nil, Expr will be nil.
	WildCard *WildCardField
	// Expr is not nil, WildCard will be nil.
	Expr ExprNode
	// AsName is alias name for Expr.
	AsName model.CIStr
	// Auxiliary stands for if this field is auxiliary.
	// When we add a Field into SelectField list which is used for having/orderby clause but the field is not in select clause,
	// we should set its Auxiliary to true. Then the TrimExec will trim the field.
	Auxiliary bool
	// contains filtered or unexported fields
}

SelectField represents fields in select statement. There are two type of select field: wildcard and expression with optional alias name.

func (*SelectField) Accept ¶ 

func (n *SelectField) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*SelectField) Restore ¶ 

func (n *SelectField) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*SelectField) SetText ¶ 

func (n *SelectField) SetText(text string)

SetText implements Node interface.

func (*SelectField) Text ¶ 

func (n *SelectField) Text() string

Text implements Node interface.

type SelectLockType ¶ 

type SelectLockType int

SelectLockType is the lock type for SelectStmt. 

const (
	SelectLockNone SelectLockType = iota
	SelectLockForUpdate
	SelectLockInShareMode
	SelectLockForUpdateNoWait
)

Select lock types.

func (SelectLockType) String ¶ 

func (slt SelectLockType) String() string

String implements fmt.Stringer.

type SelectStmt ¶ 

type SelectStmt struct {

	// SelectStmtOpts wraps around select hints and switches.
	*SelectStmtOpts
	// Distinct represents whether the select has distinct option.
	Distinct bool
	// From is the from clause of the query.
	From *TableRefsClause
	// Where is the where clause in select statement.
	Where ExprNode
	// Fields is the select expression list.
	Fields *FieldList
	// GroupBy is the group by expression list.
	GroupBy *GroupByClause
	// Having is the having condition.
	Having *HavingClause
	// WindowSpecs is the window specification list.
	WindowSpecs []WindowSpec
	// OrderBy is the ordering expression list.
	OrderBy *OrderByClause
	// Limit is the limit clause.
	Limit *Limit
	// LockTp is the lock type
	LockTp SelectLockType
	// TableHints represents the table level Optimizer Hint for join type
	TableHints []*TableOptimizerHint
	// IsAfterUnionDistinct indicates whether it's a stmt after "union distinct".
	IsAfterUnionDistinct bool
	// IsInBraces indicates whether it's a stmt in brace.
	IsInBraces bool
	// QueryBlockOffset indicates the order of this SelectStmt if counted from left to right in the sql text.
	QueryBlockOffset int
	// contains filtered or unexported fields
}

SelectStmt represents the select query node. See https://dev.mysql.com/doc/refman/5.7/en/select.html

func (*SelectStmt) Accept ¶ 

func (n *SelectStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*SelectStmt) Restore ¶ 

func (n *SelectStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type SelectStmtOpts ¶ 

type SelectStmtOpts struct {
	Distinct        bool
	SQLBigResult    bool
	SQLBufferResult bool
	SQLCache        bool
	SQLSmallResult  bool
	CalcFoundRows   bool
	StraightJoin    bool
	Priority        mysql.PriorityEnum
	TableHints      []*TableOptimizerHint
}

SelectStmtOpts wrap around select hints and switches

type SensitiveStmtNode ¶ 

type SensitiveStmtNode interface {
	StmtNode
	// SecureText is different from Text that it hide password information.
	SecureText() string
}

SensitiveStmtNode overloads StmtNode and provides a SecureText method.

type SetDefaultRoleStmt ¶ 

type SetDefaultRoleStmt struct {
	SetRoleOpt SetRoleStmtType
	RoleList   []*auth.RoleIdentity
	UserList   []*auth.UserIdentity
	// contains filtered or unexported fields
}

func (*SetDefaultRoleStmt) Accept ¶ 

func (n *SetDefaultRoleStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*SetDefaultRoleStmt) Restore ¶ 

func (n *SetDefaultRoleStmt) Restore(ctx *RestoreCtx) error

type SetPwdStmt ¶ 

type SetPwdStmt struct {
	User     *auth.UserIdentity
	Password string
	// contains filtered or unexported fields
}

SetPwdStmt is a statement to assign a password to user account. See https://dev.mysql.com/doc/refman/5.7/en/set-password.html

func (*SetPwdStmt) Accept ¶ 

func (n *SetPwdStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*SetPwdStmt) Restore ¶ 

func (n *SetPwdStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*SetPwdStmt) SecureText ¶ 

func (n *SetPwdStmt) SecureText() string

SecureText implements SensitiveStatement interface.

type SetRoleStmt ¶ 

type SetRoleStmt struct {
	SetRoleOpt SetRoleStmtType
	RoleList   []*auth.RoleIdentity
	// contains filtered or unexported fields
}

func (*SetRoleStmt) Accept ¶ 

func (n *SetRoleStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*SetRoleStmt) Restore ¶ 

func (n *SetRoleStmt) Restore(ctx *RestoreCtx) error

type SetRoleStmtType ¶ 

type SetRoleStmtType int

SetRoleStmtType is the type for FLUSH statement. 

const (
	SetRoleDefault SetRoleStmtType = iota
	SetRoleNone
	SetRoleAll
	SetRoleAllExcept
	SetRoleRegular
)

SetRole statement types.

type SetStmt ¶ 

type SetStmt struct {

	// Variables is the list of variable assignment.
	Variables []*VariableAssignment
	// contains filtered or unexported fields
}

SetStmt is the statement to set variables.

func (*SetStmt) Accept ¶ 

func (n *SetStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*SetStmt) Restore ¶ 

func (n *SetStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type ShowSlow ¶ 

type ShowSlow struct {
	Tp    ShowSlowType
	Count uint64
	Kind  ShowSlowKind
}

ShowSlow is used for the following command: 

admin show slow top [ internal | all] N
admin show slow recent N

func (*ShowSlow) Restore ¶ 

func (n *ShowSlow) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type ShowSlowKind ¶ 

type ShowSlowKind int

ShowSlowKind defines the kind for SlowSlow statement when the type is ShowSlowTop. 

const (
	// ShowSlowKindDefault is a ShowSlowKind constant.
	ShowSlowKindDefault ShowSlowKind = iota
	// ShowSlowKindInternal is a ShowSlowKind constant.
	ShowSlowKindInternal
	// ShowSlowKindAll is a ShowSlowKind constant.
	ShowSlowKindAll
)

type ShowSlowType ¶ 

type ShowSlowType int

ShowSlowType defines the type for SlowSlow statement. 

const (
	// ShowSlowTop is a ShowSlowType constant.
	ShowSlowTop ShowSlowType = iota
	// ShowSlowRecent is a ShowSlowType constant.
	ShowSlowRecent
)

type ShowStmt ¶ 

type ShowStmt struct {
	Tp          ShowStmtType // Databases/Tables/Columns/....
	DBName      string
	Table       *TableName  // Used for showing columns.
	Column      *ColumnName // Used for `desc table column`.
	IndexName   model.CIStr
	Flag        int // Some flag parsed from sql, such as FULL.
	Full        bool
	User        *auth.UserIdentity   // Used for show grants/create user.
	Roles       []*auth.RoleIdentity // Used for show grants .. using
	IfNotExists bool                 // Used for `show create database if not exists`

	// GlobalScope is used by `show variables` and `show bindings`
	GlobalScope bool
	Pattern     *PatternLikeExpr
	Where       ExprNode

	ShowProfileTypes []int  // Used for `SHOW PROFILE` syntax
	ShowProfileArgs  *int64 // Used for `SHOW PROFILE` syntax
	ShowProfileLimit *Limit // Used for `SHOW PROFILE` syntax
	// contains filtered or unexported fields
}

ShowStmt is a statement to provide information about databases, tables, columns and so on. See https://dev.mysql.com/doc/refman/5.7/en/show.html

func (*ShowStmt) Accept ¶ 

func (n *ShowStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*ShowStmt) Restore ¶ 

func (n *ShowStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type ShowStmtType ¶ 

type ShowStmtType int

ShowStmtType is the type for SHOW statement.

type ShutdownStmt ¶ 

type ShutdownStmt struct {
	// contains filtered or unexported fields
}

ShutdownStmt is a statement to stop the TiDB server. See https://dev.mysql.com/doc/refman/5.7/en/shutdown.html

func (*ShutdownStmt) Accept ¶ 

func (n *ShutdownStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*ShutdownStmt) Restore ¶ 

func (n *ShutdownStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type SplitOption ¶ 

type SplitOption struct {
	Lower      []ExprNode
	Upper      []ExprNode
	Num        int64
	ValueLists [][]ExprNode
}

func (*SplitOption) Restore ¶ 

func (n *SplitOption) Restore(ctx *RestoreCtx) error

type SplitRegionStmt ¶ 

type SplitRegionStmt struct {
	Table          *TableName
	IndexName      model.CIStr
	PartitionNames []model.CIStr

	SplitSyntaxOpt *SplitSyntaxOption

	SplitOpt *SplitOption
	// contains filtered or unexported fields
}

func (*SplitRegionStmt) Accept ¶ 

func (n *SplitRegionStmt) Accept(v Visitor) (Node, bool)

func (*SplitRegionStmt) Restore ¶ 

func (n *SplitRegionStmt) Restore(ctx *RestoreCtx) error

type SplitSyntaxOption ¶ 

type SplitSyntaxOption struct {
	HasRegionFor bool
	HasPartition bool
}

type StmtNode ¶ 

type StmtNode interface {
	Node
	// contains filtered or unexported methods
}

StmtNode represents statement node. Name of implementations should have 'Stmt' suffix.

type SubPartitionDefinition ¶ 

type SubPartitionDefinition struct {
	Name    model.CIStr
	Options []*TableOption
}

func (*SubPartitionDefinition) Restore ¶ 

func (spd *SubPartitionDefinition) Restore(ctx *RestoreCtx) error

type SubqueryExpr ¶ 

type SubqueryExpr struct {

	// Query is the query SelectNode.
	Query      ResultSetNode
	Evaluated  bool
	Correlated bool
	MultiRows  bool
	Exists     bool
	// contains filtered or unexported fields
}

SubqueryExpr represents a subquery.

func (*SubqueryExpr) Accept ¶ 

func (n *SubqueryExpr) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*SubqueryExpr) Format ¶ 

func (n *SubqueryExpr) Format(w io.Writer)

Format the ExprNode into a Writer.

func (*SubqueryExpr) GetFlag ¶ 

func (en *SubqueryExpr) GetFlag() uint64

GetFlag implements ExprNode interface.

func (*SubqueryExpr) GetType ¶ 

func (en *SubqueryExpr) GetType() *types.FieldType

GetType implements ExprNode interface.

func (*SubqueryExpr) Restore ¶ 

func (n *SubqueryExpr) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*SubqueryExpr) SetFlag ¶ 

func (en *SubqueryExpr) SetFlag(flag uint64)

SetFlag implements ExprNode interface.

func (*SubqueryExpr) SetType ¶ 

func (en *SubqueryExpr) SetType(tp *types.FieldType)

SetType implements ExprNode interface.

type TLSOption ¶ 

type TLSOption struct {
	Type  int
	Value string
}

func (*TLSOption) Restore ¶ 

func (t *TLSOption) Restore(ctx *RestoreCtx) error

type TableLock ¶ 

type TableLock struct {
	Table *TableName
	Type  model.TableLockType
}

TableLock contains the table name and lock type.

type TableName ¶ 

type TableName struct {
	Schema model.CIStr
	Name   model.CIStr

	DBInfo    *model.DBInfo
	TableInfo *model.TableInfo

	IndexHints     []*IndexHint
	PartitionNames []model.CIStr
	// contains filtered or unexported fields
}

TableName represents a table name.

func (*TableName) Accept ¶ 

func (n *TableName) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*TableName) Restore ¶ 

func (n *TableName) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*TableName) SetText ¶ 

func (n *TableName) SetText(text string)

SetText implements Node interface.

func (*TableName) Text ¶ 

func (n *TableName) Text() string

Text implements Node interface.

type TableOptimizerHint ¶ 

type TableOptimizerHint struct {

	// HintName is the name or alias of the table(s) which the hint will affect.
	// Table hints has no schema info
	// It allows only table name or alias (if table has an alias)
	HintName model.CIStr
	// QBName is the default effective query block of this hint.
	QBName    model.CIStr
	Tables    []HintTable
	Indexes   []model.CIStr
	StoreType model.CIStr
	// Statement Execution Time Optimizer Hints
	// See https://dev.mysql.com/doc/refman/5.7/en/optimizer-hints.html#optimizer-hints-execution-time
	MaxExecutionTime uint64
	MemoryQuota      int64
	QueryType        model.CIStr
	HintFlag         bool
	// contains filtered or unexported fields
}

TableOptimizerHint is Table level optimizer hint

func (*TableOptimizerHint) Accept ¶ 

func (n *TableOptimizerHint) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*TableOptimizerHint) Restore ¶ 

func (n *TableOptimizerHint) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*TableOptimizerHint) SetText ¶ 

func (n *TableOptimizerHint) SetText(text string)

SetText implements Node interface.

func (*TableOptimizerHint) Text ¶ 

func (n *TableOptimizerHint) Text() string

Text implements Node interface.

type TableOption ¶ 

type TableOption struct {
	Tp        TableOptionType
	StrValue  string
	UintValue uint64
}

TableOption is used for parsing table option from SQL.

func (*TableOption) Restore ¶ 

func (n *TableOption) Restore(ctx *RestoreCtx) error

type TableOptionType ¶ 

type TableOptionType int

TableOptionType is the type for TableOption 

const (
	TableOptionNone TableOptionType = iota
	TableOptionEngine
	TableOptionCharset
	TableOptionCollate
	TableOptionAutoIncrement
	TableOptionComment
	TableOptionAvgRowLength
	TableOptionCheckSum
	TableOptionCompression
	TableOptionConnection
	TableOptionPassword
	TableOptionKeyBlockSize
	TableOptionMaxRows
	TableOptionMinRows
	TableOptionDelayKeyWrite
	TableOptionRowFormat
	TableOptionStatsPersistent
	TableOptionShardRowID
	TableOptionPreSplitRegion
	TableOptionPackKeys
	TableOptionTablespace
	TableOptionNodegroup
	TableOptionDataDirectory
	TableOptionIndexDirectory
)

TableOption types.

type TableRefsClause ¶ 

type TableRefsClause struct {
	TableRefs *Join
	// contains filtered or unexported fields
}

TableRefsClause represents table references clause in dml statement.

func (*TableRefsClause) Accept ¶ 

func (n *TableRefsClause) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*TableRefsClause) Restore ¶ 

func (n *TableRefsClause) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*TableRefsClause) SetText ¶ 

func (n *TableRefsClause) SetText(text string)

SetText implements Node interface.

func (*TableRefsClause) Text ¶ 

func (n *TableRefsClause) Text() string

Text implements Node interface.

type TableSource ¶ 

type TableSource struct {

	// Source is the source of the data, can be a TableName,
	// a SelectStmt, a UnionStmt, or a JoinNode.
	Source ResultSetNode

	// AsName is the alias name of the table source.
	AsName model.CIStr
	// contains filtered or unexported fields
}

TableSource represents table source with a name.

func (*TableSource) Accept ¶ 

func (n *TableSource) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*TableSource) Restore ¶ 

func (n *TableSource) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*TableSource) SetText ¶ 

func (n *TableSource) SetText(text string)

SetText implements Node interface.

func (*TableSource) Text ¶ 

func (n *TableSource) Text() string

Text implements Node interface.

type TableToTable ¶ 

type TableToTable struct {
	OldTable *TableName
	NewTable *TableName
	// contains filtered or unexported fields
}

TableToTable represents renaming old table to new table used in RenameTableStmt.

func (*TableToTable) Accept ¶ 

func (n *TableToTable) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*TableToTable) Restore ¶ 

func (n *TableToTable) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*TableToTable) SetText ¶ 

func (n *TableToTable) SetText(text string)

SetText implements Node interface.

func (*TableToTable) Text ¶ 

func (n *TableToTable) Text() string

Text implements Node interface.

type TexprNode ¶ 

type TexprNode = exprNode

TexprNode is exported for parser driver.

type TiFlashReplicaSpec ¶ 

type TiFlashReplicaSpec struct {
	Count  uint64
	Labels []string
}

type TraceStmt ¶ 

type TraceStmt struct {
	Stmt   StmtNode
	Format string
	// contains filtered or unexported fields
}

TraceStmt is a statement to trace what sql actually does at background.

func (*TraceStmt) Accept ¶ 

func (n *TraceStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*TraceStmt) Restore ¶ 

func (n *TraceStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type TrimDirectionType ¶ 

type TrimDirectionType int

TrimDirectionType is the type for trim direction. 

const (
	// TrimBothDefault trims from both direction by default.
	TrimBothDefault TrimDirectionType = iota
	// TrimBoth trims from both direction with explicit notation.
	TrimBoth
	// TrimLeading trims from left.
	TrimLeading
	// TrimTrailing trims from right.
	TrimTrailing
)

type TruncateTableStmt ¶ 

type TruncateTableStmt struct {
	Table *TableName
	// contains filtered or unexported fields
}

TruncateTableStmt is a statement to empty a table completely. See https://dev.mysql.com/doc/refman/5.7/en/truncate-table.html

func (*TruncateTableStmt) Accept ¶ 

func (n *TruncateTableStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*TruncateTableStmt) Restore ¶ 

func (n *TruncateTableStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type TypeOpt ¶ 

type TypeOpt struct {
	IsUnsigned bool
	IsZerofill bool
}

TypeOpt is used for parsing data type option from SQL.

type UnaryOperationExpr ¶ 

type UnaryOperationExpr struct {

	// Op is the operator opcode.
	Op opcode.Op
	// V is the unary expression.
	V ExprNode
	// contains filtered or unexported fields
}

UnaryOperationExpr is the expression for unary operator.

func (*UnaryOperationExpr) Accept ¶ 

func (n *UnaryOperationExpr) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*UnaryOperationExpr) Format ¶ 

func (n *UnaryOperationExpr) Format(w io.Writer)

Format the ExprNode into a Writer.

func (*UnaryOperationExpr) GetFlag ¶ 

func (en *UnaryOperationExpr) GetFlag() uint64

GetFlag implements ExprNode interface.

func (*UnaryOperationExpr) GetType ¶ 

func (en *UnaryOperationExpr) GetType() *types.FieldType

GetType implements ExprNode interface.

func (*UnaryOperationExpr) Restore ¶ 

func (n *UnaryOperationExpr) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*UnaryOperationExpr) SetFlag ¶ 

func (en *UnaryOperationExpr) SetFlag(flag uint64)

SetFlag implements ExprNode interface.

func (*UnaryOperationExpr) SetType ¶ 

func (en *UnaryOperationExpr) SetType(tp *types.FieldType)

SetType implements ExprNode interface.

type UnionSelectList ¶ 

type UnionSelectList struct {
	Selects []*SelectStmt
	// contains filtered or unexported fields
}

UnionSelectList represents the select list in a union statement.

func (*UnionSelectList) Accept ¶ 

func (n *UnionSelectList) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*UnionSelectList) Restore ¶ 

func (n *UnionSelectList) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*UnionSelectList) SetText ¶ 

func (n *UnionSelectList) SetText(text string)

SetText implements Node interface.

func (*UnionSelectList) Text ¶ 

func (n *UnionSelectList) Text() string

Text implements Node interface.

type UnionStmt ¶ 

type UnionStmt struct {
	SelectList *UnionSelectList
	OrderBy    *OrderByClause
	Limit      *Limit
	// contains filtered or unexported fields
}

UnionStmt represents "union statement" See https://dev.mysql.com/doc/refman/5.7/en/union.html

func (*UnionStmt) Accept ¶ 

func (n *UnionStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*UnionStmt) Restore ¶ 

func (n *UnionStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type UnlockTablesStmt ¶ 

type UnlockTablesStmt struct {
	// contains filtered or unexported fields
}

UnlockTablesStmt is a statement to unlock tables.

func (*UnlockTablesStmt) Accept ¶ 

func (n *UnlockTablesStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*UnlockTablesStmt) Restore ¶ 

func (n *UnlockTablesStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type UpdateStmt ¶ 

type UpdateStmt struct {
	TableRefs     *TableRefsClause
	List          []*Assignment
	Where         ExprNode
	Order         *OrderByClause
	Limit         *Limit
	Priority      mysql.PriorityEnum
	IgnoreErr     bool
	MultipleTable bool
	TableHints    []*TableOptimizerHint
	// contains filtered or unexported fields
}

UpdateStmt is a statement to update columns of existing rows in tables with new values. See https://dev.mysql.com/doc/refman/5.7/en/update.html

func (*UpdateStmt) Accept ¶ 

func (n *UpdateStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*UpdateStmt) Restore ¶ 

func (n *UpdateStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type UseStmt ¶ 

type UseStmt struct {
	DBName string
	// contains filtered or unexported fields
}

UseStmt is a statement to use the DBName database as the current database. See https://dev.mysql.com/doc/refman/5.7/en/use.html

func (*UseStmt) Accept ¶ 

func (n *UseStmt) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*UseStmt) Restore ¶ 

func (n *UseStmt) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type UserSpec ¶ 

type UserSpec struct {
	User    *auth.UserIdentity
	AuthOpt *AuthOption
	IsRole  bool
}

UserSpec is used for parsing create user statement.

func (*UserSpec) EncodedPassword ¶ 

func (n *UserSpec) EncodedPassword() (string, bool)

EncodedPassword returns the encoded password (which is the real data mysql.user). The boolean value indicates input's password format is legal or not.

func (*UserSpec) Restore ¶ 

func (n *UserSpec) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*UserSpec) SecurityString ¶ 

func (n *UserSpec) SecurityString() string

SecurityString formats the UserSpec without password information.

type ValueExpr ¶ 

type ValueExpr interface {
	ExprNode
	SetValue(val interface{})
	GetValue() interface{}
	GetDatumString() string
	GetString() string
	GetProjectionOffset() int
	SetProjectionOffset(offset int)
}

ValueExpr define a interface for ValueExpr.

type ValuesExpr ¶ 

type ValuesExpr struct {

	// Column is column name.
	Column *ColumnNameExpr
	// contains filtered or unexported fields
}

ValuesExpr is the expression used in INSERT VALUES.

func (*ValuesExpr) Accept ¶ 

func (n *ValuesExpr) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*ValuesExpr) Format ¶ 

func (n *ValuesExpr) Format(w io.Writer)

Format the ExprNode into a Writer.

func (*ValuesExpr) GetFlag ¶ 

func (en *ValuesExpr) GetFlag() uint64

GetFlag implements ExprNode interface.

func (*ValuesExpr) GetType ¶ 

func (en *ValuesExpr) GetType() *types.FieldType

GetType implements ExprNode interface.

func (*ValuesExpr) Restore ¶ 

func (n *ValuesExpr) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*ValuesExpr) SetFlag ¶ 

func (en *ValuesExpr) SetFlag(flag uint64)

SetFlag implements ExprNode interface.

func (*ValuesExpr) SetType ¶ 

func (en *ValuesExpr) SetType(tp *types.FieldType)

SetType implements ExprNode interface.

type VariableAssignment ¶ 

type VariableAssignment struct {
	Name     string
	Value    ExprNode
	IsGlobal bool
	IsSystem bool

	// ExtendValue is a way to store extended info.
	// VariableAssignment should be able to store information for SetCharset/SetPWD Stmt.
	// For SetCharsetStmt, Value is charset, ExtendValue is collation.
	// TODO: Use SetStmt to implement set password statement.
	ExtendValue ValueExpr
	// contains filtered or unexported fields
}

VariableAssignment is a variable assignment struct.

func (*VariableAssignment) Accept ¶ 

func (n *VariableAssignment) Accept(v Visitor) (Node, bool)

Accept implements Node interface.

func (*VariableAssignment) Restore ¶ 

func (n *VariableAssignment) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*VariableAssignment) SetText ¶ 

func (n *VariableAssignment) SetText(text string)

SetText implements Node interface.

func (*VariableAssignment) Text ¶ 

func (n *VariableAssignment) Text() string

Text implements Node interface.

type VariableExpr ¶ 

type VariableExpr struct {

	// Name is the variable name.
	Name string
	// IsGlobal indicates whether this variable is global.
	IsGlobal bool
	// IsSystem indicates whether this variable is a system variable in current session.
	IsSystem bool
	// ExplicitScope indicates whether this variable scope is set explicitly.
	ExplicitScope bool
	// Value is the variable value.
	Value ExprNode
	// contains filtered or unexported fields
}

VariableExpr is the expression for variable.

func (*VariableExpr) Accept ¶ 

func (n *VariableExpr) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*VariableExpr) Format ¶ 

func (n *VariableExpr) Format(w io.Writer)

Format the ExprNode into a Writer.

func (*VariableExpr) GetFlag ¶ 

func (en *VariableExpr) GetFlag() uint64

GetFlag implements ExprNode interface.

func (*VariableExpr) GetType ¶ 

func (en *VariableExpr) GetType() *types.FieldType

GetType implements ExprNode interface.

func (*VariableExpr) Restore ¶ 

func (n *VariableExpr) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*VariableExpr) SetFlag ¶ 

func (en *VariableExpr) SetFlag(flag uint64)

SetFlag implements ExprNode interface.

func (*VariableExpr) SetType ¶ 

func (en *VariableExpr) SetType(tp *types.FieldType)

SetType implements ExprNode interface.

type Visitor ¶ 

type Visitor interface {
	// Enter is called before children nodes are visited.
	// The returned node must be the same type as the input node n.
	// skipChildren returns true means children nodes should be skipped,
	// this is useful when work is done in Enter and there is no need to visit children.
	Enter(n Node) (node Node, skipChildren bool)
	// Leave is called after children nodes have been visited.
	// The returned node's type can be different from the input node if it is a ExprNode,
	// Non-expression node must be the same type as the input node n.
	// ok returns false to stop visiting.
	Leave(n Node) (node Node, ok bool)
}

Visitor visits a Node.

type WhenClause ¶ 

type WhenClause struct {

	// Expr is the condition expression in WhenClause.
	Expr ExprNode
	// Result is the result expression in WhenClause.
	Result ExprNode
	// contains filtered or unexported fields
}

WhenClause is the when clause in Case expression for "when condition then result".

func (*WhenClause) Accept ¶ 

func (n *WhenClause) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*WhenClause) Restore ¶ 

func (n *WhenClause) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*WhenClause) SetText ¶ 

func (n *WhenClause) SetText(text string)

SetText implements Node interface.

func (*WhenClause) Text ¶ 

func (n *WhenClause) Text() string

Text implements Node interface.

type WildCardField ¶ 

type WildCardField struct {
	Table  model.CIStr
	Schema model.CIStr
	// contains filtered or unexported fields
}

WildCardField is a special type of select field content.

func (*WildCardField) Accept ¶ 

func (n *WildCardField) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*WildCardField) Restore ¶ 

func (n *WildCardField) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*WildCardField) SetText ¶ 

func (n *WildCardField) SetText(text string)

SetText implements Node interface.

func (*WildCardField) Text ¶ 

func (n *WildCardField) Text() string

Text implements Node interface.

type WindowFuncExpr ¶ 

type WindowFuncExpr struct {

	// F is the function name.
	F string
	// Args is the function args.
	Args []ExprNode
	// Distinct cannot be true for most window functions, except `max` and `min`.
	// We need to raise error if it is not allowed to be true.
	Distinct bool
	// IgnoreNull indicates how to handle null value.
	// MySQL only supports `RESPECT NULLS`, so we need to raise error if it is true.
	IgnoreNull bool
	// FromLast indicates the calculation direction of this window function.
	// MySQL only supports calculation from first, so we need to raise error if it is true.
	FromLast bool
	// Spec is the specification of this window.
	Spec WindowSpec
	// contains filtered or unexported fields
}

WindowFuncExpr represents window function expression.

func (*WindowFuncExpr) Accept ¶ 

func (n *WindowFuncExpr) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*WindowFuncExpr) Format ¶ 

func (n *WindowFuncExpr) Format(w io.Writer)

Format formats the window function expression into a Writer.

func (*WindowFuncExpr) Restore ¶ 

func (n *WindowFuncExpr) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

type WindowSpec ¶ 

type WindowSpec struct {
	Name model.CIStr
	// Ref is the reference window of this specification. For example, in `w2 as (w1 order by a)`,
	// the definition of `w2` references `w1`.
	Ref model.CIStr

	PartitionBy *PartitionByClause
	OrderBy     *OrderByClause
	Frame       *FrameClause

	// OnlyAlias will set to true of the first following case.
	// To make compatible with MySQL, we need to distinguish `select func over w` from `select func over (w)`.
	OnlyAlias bool
	// contains filtered or unexported fields
}

WindowSpec is the specification of a window.

func (*WindowSpec) Accept ¶ 

func (n *WindowSpec) Accept(v Visitor) (Node, bool)

Accept implements Node Accept interface.

func (*WindowSpec) Restore ¶ 

func (n *WindowSpec) Restore(ctx *RestoreCtx) error

Restore implements Node interface.

func (*WindowSpec) SetText ¶ 

func (n *WindowSpec) SetText(text string)

SetText implements Node interface.

func (*WindowSpec) Text ¶ 

func (n *WindowSpec) Text() string

Text implements Node interface.

Source Files ¶

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