forked from pingcap/tidb
/
plans.go
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/
plans.go
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// Copyright 2015 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
package plan
import (
"github.com/pingcap/tidb/ast"
"github.com/pingcap/tidb/expression"
"github.com/pingcap/tidb/model"
"github.com/pingcap/tidb/table"
)
// ShowDDL is for showing DDL information.
type ShowDDL struct {
basePlan
}
// CheckTable is used for checking table data, built from the 'admin check table' statement.
type CheckTable struct {
basePlan
Tables []*ast.TableName
}
// SelectLock represents a select lock plan.
type SelectLock struct {
*basePlan
baseLogicalPlan
basePhysicalPlan
Lock ast.SelectLockType
}
// Limit represents offset and limit plan.
type Limit struct {
*basePlan
baseLogicalPlan
basePhysicalPlan
Offset uint64
Count uint64
}
// Prepare represents prepare plan.
type Prepare struct {
basePlan
Name string
SQLText string
}
// Execute represents prepare plan.
type Execute struct {
basePlan
Name string
UsingVars []expression.Expression
ExecID uint32
}
// Deallocate represents deallocate plan.
type Deallocate struct {
basePlan
Name string
}
// Show represents a show plan.
type Show struct {
*basePlan
baseLogicalPlan
basePhysicalPlan
Tp ast.ShowStmtType // Databases/Tables/Columns/....
DBName string
Table *ast.TableName // Used for showing columns.
Column *ast.ColumnName // Used for `desc table column`.
Flag int // Some flag parsed from sql, such as FULL.
Full bool
User string // Used for show grants.
// Used by show variables
GlobalScope bool
}
// Set represents a plan for set stmt.
type Set struct {
basePlan
VarAssigns []*expression.VarAssignment
}
// Simple represents a simple statement plan which doesn't need any optimization.
type Simple struct {
basePlan
Statement ast.StmtNode
}
// Insert represents an insert plan.
type Insert struct {
*basePlan
baseLogicalPlan
basePhysicalPlan
Table table.Table
tableSchema *expression.Schema
Columns []*ast.ColumnName
Lists [][]expression.Expression
Setlist []*expression.Assignment
OnDuplicate []*expression.Assignment
IsReplace bool
Priority int
Ignore bool
}
// AnalyzePKTask is used for analyze pk. Used only when pk is handle.
type AnalyzePKTask struct {
TableInfo *model.TableInfo
PKInfo *model.ColumnInfo
}
// AnalyzeColumnsTask is used for analyze columns.
type AnalyzeColumnsTask struct {
TableInfo *model.TableInfo
ColsInfo []*model.ColumnInfo
}
// AnalyzeIndexTask is used for analyze index.
type AnalyzeIndexTask struct {
TableInfo *model.TableInfo
IndexInfo *model.IndexInfo
}
// Analyze represents an analyze plan
type Analyze struct {
basePlan
PkTasks []AnalyzePKTask
ColTasks []AnalyzeColumnsTask
IdxTasks []AnalyzeIndexTask
}
// LoadData represents a loaddata plan.
type LoadData struct {
basePlan
IsLocal bool
Path string
Table *ast.TableName
FieldsInfo *ast.FieldsClause
LinesInfo *ast.LinesClause
}
// DDL represents a DDL statement plan.
type DDL struct {
basePlan
Statement ast.DDLNode
}
// Explain represents a explain plan.
type Explain struct {
basePlan
StmtPlan Plan
}