query

package
v3.77.0-rc2 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Aug 20, 2024 License: Apache-2.0 Imports: 14 Imported by: 3

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Index

Constants

View Source 
const (
	SyntaxYQL        = options.SyntaxYQL
	SyntaxPostgreSQL = options.SyntaxPostgreSQL
)
View Source 
const (
	ExecModeParse    = options.ExecModeParse
	ExecModeValidate = options.ExecModeValidate
	ExecModeExplain  = options.ExecModeExplain
	ExecModeExecute  = options.ExecModeExecute
)
View Source 
const (
	StatsModeBasic   = options.StatsModeBasic
	StatsModeNone    = options.StatsModeNone
	StatsModeFull    = options.StatsModeFull
	StatsModeProfile = options.StatsModeProfile
)

Variables

This section is empty.

Functions

func BeginTx 

func BeginTx(opts ...TransactionOption) internal.ControlOption

BeginTx returns selector transaction control option

func CommitTx 

func CommitTx() internal.ControlOption

CommitTx returns commit transaction control option

func WithCallOptions 

func WithCallOptions(opts ...grpc.CallOption) options.Execute

func WithCommit 

func WithCommit() options.Execute

func WithExecMode 

func WithExecMode(mode options.ExecMode) options.Execute

func WithFetchToken added in v3.77.0 

func WithFetchToken(fetchToken string) options.FetchScriptOption

func WithIdempotent 

func WithIdempotent() options.RetryOptionsOption

func WithInconsistentReads 

func WithInconsistentReads() internal.OnlineReadOnlyOption

func WithLabel added in v3.57.1 

func WithLabel(lbl string) options.RetryOptionsOption

func WithParameters 

func WithParameters(parameters *params.Parameters) options.Execute

func WithResultSetIndex added in v3.77.0 

func WithResultSetIndex(resultSetIndex int64) options.FetchScriptOption

func WithRetryBudget added in v3.66.0 

func WithRetryBudget(b budget.Budget) options.RetryOptionsOption

WithRetryBudget creates option with external budget

Experimental: https://github.com/ydb-platform/ydb-go-sdk/blob/master/VERSIONING.md#experimental

func WithRowsLimit added in v3.77.0 

func WithRowsLimit(rowsLimit int64) options.FetchScriptOption

func WithStatsMode 

func WithStatsMode(mode options.StatsMode, callback func(Stats)) options.Execute

func WithSyntax 

func WithSyntax(syntax options.Syntax) options.Execute

func WithTrace 

func WithTrace(t *trace.Query) options.TraceOption

func WithTx 

func WithTx(t tx.Identifier) internal.ControlOption

func WithTxControl 

func WithTxControl(txControl *tx.Control) options.Execute

func WithTxID 

func WithTxID(txID string) internal.ControlOption

func WithTxSettings 

func WithTxSettings(txSettings tx.Settings) options.DoTxOption

Types

type Client 

type Client interface {
	Executor

	// Do provide the best effort for execute operation.
	//
	// Do implements internal busy loop until one of the following conditions is met:
	// - deadline was canceled or deadlined
	// - retry operation returned nil as error
	//
	// Warning: if context without deadline or cancellation func than Do can run indefinitely.
	Do(ctx context.Context, op Operation, opts ...DoOption) error

	// DoTx provide the best effort for execute transaction.
	//
	// DoTx implements internal busy loop until one of the following conditions is met:
	// - deadline was canceled or deadlined
	// - retry operation returned nil as error
	//
	// DoTx makes auto selector (with TransactionSettings, by default - SerializableReadWrite), commit and
	// rollback (on error) of transaction.
	//
	// If op TxOperation returns nil - transaction will be committed
	// If op TxOperation return non nil - transaction will be rollback
	// Warning: if context without deadline or cancellation func than DoTx can run indefinitely
	DoTx(ctx context.Context, op TxOperation, opts ...DoTxOption) error

	// QueryResultSet is a helper which read all rows from first result set in result
	//
	// ReadRow returns error if result contains more than one result set
	//
	// Experimental: https://github.com/ydb-platform/ydb-go-sdk/blob/master/VERSIONING.md#experimental
	QueryResultSet(ctx context.Context, query string, opts ...options.Execute) (ResultSet, error)

	// QueryRow is a helper which read only one row from first result set in result
	//
	// ReadRow returns error if result contains more than one result set or more than one row
	//
	// Experimental: https://github.com/ydb-platform/ydb-go-sdk/blob/master/VERSIONING.md#experimental
	QueryRow(ctx context.Context, query string, opts ...options.Execute) (Row, error)

	// ExecuteScript starts long executing script with polling results later
	//
	// Experimental: https://github.com/ydb-platform/ydb-go-sdk/blob/master/VERSIONING.md#experimental
	ExecuteScript(
		ctx context.Context, query string, ttl time.Duration, ops ...options.Execute,
	) (*options.ExecuteScriptOperation, error)

	// FetchScriptResults fetching the script results
	//
	// Experimental: https://github.com/ydb-platform/ydb-go-sdk/blob/master/VERSIONING.md#experimental
	FetchScriptResults(
		ctx context.Context, opID string, opts ...options.FetchScriptOption,
	) (*options.FetchScriptResult, error)
}

Client defines API of query client

Experimental: https://github.com/ydb-platform/ydb-go-sdk/blob/master/VERSIONING.md#experimental

type ClosableSession 

type ClosableSession interface {
	closer.Closer

	Session
}

type DoOption 

type DoOption = options.DoOption

type DoTxOption 

type DoTxOption = options.DoTxOption

type Executor added in v3.77.0 

type Executor interface {
	// Exec execute query without result
	//
	// Exec used by default:
	// - DefaultTxControl
	Exec(ctx context.Context, query string, opts ...options.Execute) error

	// Query execute query with result
	//
	// Exec used by default:
	// - DefaultTxControl
	Query(ctx context.Context, query string, opts ...options.Execute) (r Result, err error)

	// QueryResultSet execute query and take the exactly single materialized result set from result
	//
	// Exec used by default:
	// - DefaultTxControl
	QueryResultSet(ctx context.Context, query string, opts ...options.Execute) (rs ResultSet, err error)

	// QueryRow execute query and take the exactly single row from exactly single result set from result
	//
	// Exec used by default:
	// - DefaultTxControl
	QueryRow(ctx context.Context, query string, opts ...options.Execute) (row Row, err error)
}

Executor is an interface for execute queries

Experimental: https://github.com/ydb-platform/ydb-go-sdk/blob/master/VERSIONING.md#experimental

type NamedDestination added in v3.73.0 

type NamedDestination = scanner.NamedDestination

func Named 

func Named(columnName string, destinationValueReference interface{}) (dst NamedDestination)

type Operation 

type Operation func(ctx context.Context, s Session) error

Operation is the interface that holds an operation for retry. if Operation returns not nil - operation will retry if Operation returns nil - retry loop will break

type Result 

type Result = result.Result

type ResultSet 

type ResultSet = result.Set

type Row 

type Row = result.Row

type ScanStructOption added in v3.73.0 

type ScanStructOption = scanner.ScanStructOption

func WithScanStructAllowMissingColumnsFromSelect 

func WithScanStructAllowMissingColumnsFromSelect() ScanStructOption

func WithScanStructAllowMissingFieldsInStruct 

func WithScanStructAllowMissingFieldsInStruct() ScanStructOption

func WithScanStructTagName 

func WithScanStructTagName(name string) ScanStructOption

type Session 

type Session interface {
	SessionInfo
	Executor

	Begin(ctx context.Context, txSettings TransactionSettings) (Transaction, error)
}

type SessionInfo 

type SessionInfo interface {
	ID() string
	NodeID() uint32
	Status() string
}

type Stats added in v3.59.0 

type Stats = stats.QueryStats

type Transaction 

type Transaction interface {
	TxActor

	CommitTx(ctx context.Context) (err error)
	Rollback(ctx context.Context) (err error)
}

type TransactionControl 

type TransactionControl = internal.Control

func DefaultTxControl 

func DefaultTxControl() *TransactionControl

DefaultTxControl returns default transaction control for use default tx control on server-side

func NoTx 

func NoTx() *TransactionControl

func OnlineReadOnlyTxControl 

func OnlineReadOnlyTxControl(opts ...internal.OnlineReadOnlyOption) *TransactionControl

OnlineReadOnlyTxControl returns online read-only transaction control

func SerializableReadWriteTxControl 

func SerializableReadWriteTxControl(opts ...internal.ControlOption) *TransactionControl

SerializableReadWriteTxControl returns transaction control with serializable read-write isolation mode

func SnapshotReadOnlyTxControl 

func SnapshotReadOnlyTxControl() *TransactionControl

SnapshotReadOnlyTxControl returns snapshot read-only transaction control

func StaleReadOnlyTxControl 

func StaleReadOnlyTxControl() *TransactionControl

StaleReadOnlyTxControl returns stale read-only transaction control

func TxControl 

func TxControl(opts ...internal.ControlOption) *TransactionControl

TxControl makes transaction control from given options

type TransactionOption added in v3.74.0 

type TransactionOption = internal.Option

func WithDefaultTxMode 

func WithDefaultTxMode() TransactionOption

func WithOnlineReadOnly 

func WithOnlineReadOnly(opts ...internal.OnlineReadOnlyOption) TransactionOption

func WithSerializableReadWrite 

func WithSerializableReadWrite() TransactionOption

func WithSnapshotReadOnly 

func WithSnapshotReadOnly() TransactionOption

func WithStaleReadOnly 

func WithStaleReadOnly() TransactionOption

type TransactionSettings 

type TransactionSettings = internal.Settings

func TxSettings 

func TxSettings(opts ...internal.Option) TransactionSettings

TxSettings returns transaction settings

type TxActor 

type TxActor interface {
	tx.Identifier
	Executor
}

type TxOperation 

type TxOperation func(ctx context.Context, tx TxActor) error

TxOperation is the interface that holds an operation for retry. if TxOperation returns not nil - operation will retry if TxOperation returns nil - retry loop will break

type Type added in v3.73.0 

type Type = types.Type

Source Files

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