github.com/matrixorigin/matrixone@v0.7.0/pkg/sql/parsers/tree/declare.go (about)

     1  // Copyright 2021 Matrix Origin
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package tree
    16  
    17  // Declare statement
    18  type Declare struct {
    19  	statementImpl
    20  	Variables  []string
    21  	ColumnType *T
    22  	DefaultVal Expr
    23  }
    24  
    25  func (node *Declare) Format(ctx *FmtCtx) {
    26  	ctx.WriteString("declare ")
    27  	for _, v := range node.Variables {
    28  		ctx.WriteString(v + " ")
    29  	}
    30  	node.ColumnType.InternalType.Format(ctx)
    31  	ctx.WriteString(" default ")
    32  	node.DefaultVal.Format(ctx)
    33  }
    34  
    35  func (node *Declare) GetStatementType() string { return "Declare" }
    36  func (node *Declare) GetQueryType() string     { return QueryTypeOth }