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Documentation

Index

• func IsReadOnly(node ast.Node, vars *variable.SessionVars) bool
• func Optimize(ctx context.Context, sctx sessionctx.Context, node ast.Node, ...) (plan core.Plan, slice types.NameSlice, retErr error)
• func OptimizeExecStmt(ctx context.Context, sctx sessionctx.Context, execAst *ast.ExecuteStmt, ...) (core.Plan, types.NameSlice, error)
• func OptimizeForForeignKeyCascade(ctx context.Context, sctx pctx.PlanContext, node ast.StmtNode, ...) (core.Plan, error)

Functions

func IsReadOnly

func IsReadOnly(node ast.Node, vars *variable.SessionVars) bool

IsReadOnly check whether the ast.Node is a read only statement.

func Optimize

func Optimize(ctx context.Context, sctx sessionctx.Context, node ast.Node, is infoschema.InfoSchema) (plan core.Plan, slice types.NameSlice, retErr error)

Optimize does optimization and creates a Plan.

func OptimizeExecStmt

func OptimizeExecStmt(ctx context.Context, sctx sessionctx.Context,
	execAst *ast.ExecuteStmt, is infoschema.InfoSchema) (core.Plan, types.NameSlice, error)

OptimizeExecStmt to handle the "execute" statement

func OptimizeForForeignKeyCascade

func OptimizeForForeignKeyCascade(ctx context.Context, sctx pctx.PlanContext, node ast.StmtNode, is infoschema.InfoSchema) (core.Plan, error)

OptimizeForForeignKeyCascade does optimization and creates a Plan for foreign key cascade. Compare to Optimize, OptimizeForForeignKeyCascade only build plan by StmtNode, doesn't consider plan cache and plan binding, also doesn't do privilege check.