optimizer

package
Version: v1.1.4 Latest Latest
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Published: Jan 28, 2021 License: GPL-3.0 Imports: 5 Imported by: 0

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Functions

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Types

type Optimizer

type Optimizer interface {
	BuildPlanTree() (*planner.PlanTree, error)
}

Optimizer interface.

type SimpleOptimizer

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

SimpleOptimizer is a simple optimizer who dispatches the plans

func NewSimpleOptimizer

func NewSimpleOptimizer(log *xlog.Log, database string, query string, node sqlparser.Statement, router *router.Router) *SimpleOptimizer

NewSimpleOptimizer creates the new simple optimizer.

func (*SimpleOptimizer) BuildPlanTree

func (so *SimpleOptimizer) BuildPlanTree() (*planner.PlanTree, error)

BuildPlanTree used to build plan trees for the query.

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