39 lines
1.1 KiB
Go
39 lines
1.1 KiB
Go
// Copyright 2024 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package util
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import (
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"bytes"
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"fmt"
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"github.com/pingcap/tidb/pkg/expression"
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)
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// ExplainByItems generates explain information for ByItems.
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func ExplainByItems(ctx expression.EvalContext, buffer *bytes.Buffer, byItems []*ByItems) *bytes.Buffer {
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for i, item := range byItems {
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if item.Desc {
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fmt.Fprintf(buffer, "%s:desc", item.Expr.ExplainInfo(ctx))
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} else {
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fmt.Fprintf(buffer, "%s", item.Expr.ExplainInfo(ctx))
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}
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if i+1 < len(byItems) {
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buffer.WriteString(", ")
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}
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}
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return buffer
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}
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