tidb trace 代码
文件路径：/planner/core/trace.go
/ Copyright 2018 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,
/ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/ See the License for the specific language governing permissions and
/ limitations under the License.
package core
import (
"github.com/pingcap/tidb/parser/ast"
)
/ Trace represents a trace plan.
type Trace struct {
baseSchemaProducer
StmtNode ast.StmtNode
Format string
/ OptimizerTrace indicates `trace plan target = 'xxx' <statement>` case
OptimizerTrace bool
OptimizerTraceTarget string
}
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