github.com/matrixorigin/matrixone@v1.2.0/pkg/sql/plan/mysql_compatibility.go (about)

     1  // Copyright 2022 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 plan
    16  
    17  import "github.com/matrixorigin/matrixone/pkg/pb/plan"
    18  
    19  func (builder *QueryBuilder) wrapBareColRefsInAnyValue(expr *plan.Expr, ctx *BindContext) *plan.Expr {
    20  	switch exprImpl := expr.Expr.(type) {
    21  	case *plan.Expr_Col:
    22  		if exprImpl.Col.RelPos == ctx.groupTag || exprImpl.Col.RelPos == ctx.aggregateTag {
    23  			return expr
    24  		}
    25  		newExpr, _ := BindFuncExprImplByPlanExpr(builder.compCtx.GetContext(), "any_value", []*plan.Expr{expr})
    26  		colPos := len(ctx.aggregates)
    27  		ctx.aggregates = append(ctx.aggregates, newExpr)
    28  		return &plan.Expr{
    29  			Typ: ctx.aggregates[colPos].Typ,
    30  			Expr: &plan.Expr_Col{
    31  				Col: &plan.ColRef{
    32  					RelPos: ctx.aggregateTag,
    33  					ColPos: int32(colPos),
    34  				},
    35  			},
    36  		}
    37  
    38  	case *plan.Expr_F:
    39  		for i, arg := range exprImpl.F.Args {
    40  			exprImpl.F.Args[i] = builder.wrapBareColRefsInAnyValue(arg, ctx)
    41  		}
    42  		return expr
    43  
    44  	default:
    45  		return expr
    46  	}
    47  }