stmtctx

package
v0.0.0-...-3903214 Latest Latest
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 Go to latest Published: Apr 6, 2021 License: Apache-2.0 Imports: 10 Imported by: 0

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Constants

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const (
	// WarnLevelError represents level "Error" for 'SHOW WARNINGS' syntax.
	WarnLevelError = "Error"
	// WarnLevelWarning represents level "Warning" for 'SHOW WARNINGS' syntax.
	WarnLevelWarning = "Warning"
	// WarnLevelNote represents level "Note" for 'SHOW WARNINGS' syntax.
	WarnLevelNote = "Note"
)

Variables

This section is empty.

Functions

This section is empty.

Types

type CopTasksDetails 

type CopTasksDetails struct {
	NumCopTasks int

	AvgProcessTime    time.Duration
	P90ProcessTime    time.Duration
	MaxProcessAddress string
	MaxProcessTime    time.Duration

	AvgWaitTime    time.Duration
	P90WaitTime    time.Duration
	MaxWaitAddress string
	MaxWaitTime    time.Duration
}

CopTasksDetails collects some useful information of cop-tasks during execution.

func (*CopTasksDetails) ToZapFields 

func (d *CopTasksDetails) ToZapFields() (fields []zap.Field)

ToZapFields wraps the CopTasksDetails as zap.Fileds.

type SQLWarn 

type SQLWarn struct {
	Level string
	Err   error
}

SQLWarn relates a sql warning and it's level.

type StatementContext 

type StatementContext struct {

	// IsDDLJobInQueue is used to mark whether the DDL job is put into the queue.
	// If IsDDLJobInQueue is true, it means the DDL job is in the queue of storage, and it can be handled by the DDL worker.
	IsDDLJobInQueue        bool
	InInsertStmt           bool
	InUpdateStmt           bool
	InDeleteStmt           bool
	InSelectStmt           bool
	InLoadDataStmt         bool
	InExplainStmt          bool
	IgnoreTruncate         bool
	IgnoreZeroInDate       bool
	DupKeyAsWarning        bool
	BadNullAsWarning       bool
	DividedByZeroAsWarning bool
	TruncateAsWarning      bool
	OverflowAsWarning      bool
	InShowWarning          bool
	UseCache               bool
	PadCharToFullLength    bool
	BatchCheck             bool
	InNullRejectCheck      bool
	AllowInvalidDate       bool
	// CastStrToIntStrict is used to control the way we cast float format string to int.
	// If ConvertStrToIntStrict is false, we convert it to a valid float string first,
	// then cast the float string to int string. Otherwise, we cast string to integer
	// prefix in a strict way, only extract 0-9 and (+ or - in first bit).
	CastStrToIntStrict bool

	// PrevAffectedRows is the affected-rows value(DDL is 0, DML is the number of affected rows).
	PrevAffectedRows int64
	// PrevLastInsertID is the last insert ID of previous statement.
	PrevLastInsertID uint64
	// LastInsertID is the auto-generated ID in the current statement.
	LastInsertID uint64
	// InsertID is the given insert ID of an auto_increment column.
	InsertID uint64

	// Copied from SessionVars.TimeZone.
	TimeZone         *time.Location
	Priority         mysql.PriorityEnum
	NotFillCache     bool
	MemTracker       *memory.Tracker
	RuntimeStatsColl *execdetails.RuntimeStatsColl
	TableIDs         []int64
	IndexNames       []string

	StmtType    string
	OriginalSQL string

	Tables []TableEntry
	// contains filtered or unexported fields
}

StatementContext contains variables for a statement. It should be reset before executing a statement.

func (*StatementContext) AddAffectedRows 

func (sc *StatementContext) AddAffectedRows(rows uint64)

AddAffectedRows adds affected rows.

func (*StatementContext) AddCopiedRows 

func (sc *StatementContext) AddCopiedRows(rows uint64)

AddCopiedRows adds copied rows.

func (*StatementContext) AddFoundRows 

func (sc *StatementContext) AddFoundRows(rows uint64)

AddFoundRows adds found rows.

func (*StatementContext) AddRecordRows 

func (sc *StatementContext) AddRecordRows(rows uint64)

AddRecordRows adds record rows.

func (*StatementContext) AddTouchedRows 

func (sc *StatementContext) AddTouchedRows(rows uint64)

AddTouchedRows adds touched rows.

func (*StatementContext) AddUpdatedRows 

func (sc *StatementContext) AddUpdatedRows(rows uint64)

AddUpdatedRows adds updated rows.

func (*StatementContext) AffectedRows 

func (sc *StatementContext) AffectedRows() uint64

AffectedRows gets affected rows.

func (*StatementContext) AppendError 

func (sc *StatementContext) AppendError(warn error)

AppendError appends a warning with level 'Error'.

func (*StatementContext) AppendNote 

func (sc *StatementContext) AppendNote(warn error)

AppendNote appends a warning with level 'Note'.

func (*StatementContext) AppendWarning 

func (sc *StatementContext) AppendWarning(warn error)

AppendWarning appends a warning with level 'Warning'.

func (*StatementContext) CopTasksDetails 

func (sc *StatementContext) CopTasksDetails() *CopTasksDetails

CopTasksDetails returns some useful information of cop-tasks during execution.

func (*StatementContext) CopiedRows 

func (sc *StatementContext) CopiedRows() uint64

CopiedRows is used to generate info message

func (*StatementContext) FoundRows 

func (sc *StatementContext) FoundRows() uint64

FoundRows gets found rows.

func (*StatementContext) GetExecDetails 

func (sc *StatementContext) GetExecDetails() execdetails.ExecDetails

GetExecDetails gets the execution details for the statement.

func (*StatementContext) GetMessage 

func (sc *StatementContext) GetMessage() string

GetMessage returns the extra message of the last executed command, if there is no message, it returns empty string

func (*StatementContext) GetNowTsCached 

func (sc *StatementContext) GetNowTsCached() time.Time

GetNowTsCached getter for nowTs, if not set get now time and cache it

func (*StatementContext) GetWarnings 

func (sc *StatementContext) GetWarnings() []SQLWarn

GetWarnings gets warnings.

func (*StatementContext) HandleOverflow 

func (sc *StatementContext) HandleOverflow(err error, warnErr error) error

HandleOverflow treats ErrOverflow as warnings or returns the error based on the StmtCtx.OverflowAsWarning state.

func (*StatementContext) HandleTruncate 

func (sc *StatementContext) HandleTruncate(err error) error

HandleTruncate ignores or returns the error based on the StatementContext state.

func (*StatementContext) HistogramsNotLoad 

func (sc *StatementContext) HistogramsNotLoad() bool

HistogramsNotLoad gets histogramsNotLoad.

func (*StatementContext) MergeExecDetails 

func (sc *StatementContext) MergeExecDetails(details *execdetails.ExecDetails, commitDetails *execdetails.CommitDetails)

MergeExecDetails merges a single region execution details into self, used to print the information in slow query log.

func (*StatementContext) NumErrorWarnings 

func (sc *StatementContext) NumErrorWarnings() (ec, wc string)

NumErrorWarnings gets warning and error count.

func (*StatementContext) RecordRows 

func (sc *StatementContext) RecordRows() uint64

RecordRows is used to generate info message

func (*StatementContext) ResetForRetry 

func (sc *StatementContext) ResetForRetry()

ResetForRetry resets the changed states during execution.

func (*StatementContext) ResetNowTs 

func (sc *StatementContext) ResetNowTs()

ResetNowTs resetter for nowTs, clear cached time flag

func (*StatementContext) SQLDigest 

func (sc *StatementContext) SQLDigest() (normalized, sqlDigest string)

SQLDigest gets normalized and digest for provided sql. it will cache result after first calling.

func (*StatementContext) SetHistogramsNotLoad 

func (sc *StatementContext) SetHistogramsNotLoad()

SetHistogramsNotLoad sets histogramsNotLoad.

func (*StatementContext) SetMessage 

func (sc *StatementContext) SetMessage(msg string)

SetMessage sets the info message generated by some commands

func (*StatementContext) SetWarnings 

func (sc *StatementContext) SetWarnings(warns []SQLWarn)

SetWarnings sets warnings.

func (*StatementContext) ShouldClipToZero 

func (sc *StatementContext) ShouldClipToZero() bool

ShouldClipToZero indicates whether values less than 0 should be clipped to 0 for unsigned integer types. This is the case for `insert`, `update`, `alter table` and `load data infile` statements, when not in strict SQL mode. see https://dev.mysql.com/doc/refman/5.7/en/out-of-range-and-overflow.html

func (*StatementContext) ShouldIgnoreOverflowError 

func (sc *StatementContext) ShouldIgnoreOverflowError() bool

ShouldIgnoreOverflowError indicates whether we should ignore the error when type conversion overflows, so we can leave it for further processing like clipping values less than 0 to 0 for unsigned integer types.

func (*StatementContext) TouchedRows 

func (sc *StatementContext) TouchedRows() uint64

TouchedRows is used to generate info message

func (*StatementContext) UpdatedRows 

func (sc *StatementContext) UpdatedRows() uint64

UpdatedRows is used to generate info message

func (*StatementContext) WarningCount 

func (sc *StatementContext) WarningCount() uint16

WarningCount gets warning count.

type TableEntry 

type TableEntry struct {
	DB    string
	Table string
}

TableEntry presents table in db.

Source Files

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