87 lines
2.6 KiB
Go
87 lines
2.6 KiB
Go
// Copyright 2021 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 statistics_test
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import (
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"context"
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"testing"
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"github.com/pingcap/tidb/domain"
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"github.com/pingcap/tidb/infoschema"
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"github.com/pingcap/tidb/parser"
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plannercore "github.com/pingcap/tidb/planner/core"
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"github.com/pingcap/tidb/sessionctx"
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"github.com/pingcap/tidb/statistics"
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"github.com/pingcap/tidb/testkit"
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"github.com/pingcap/tidb/testkit/testdata"
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"github.com/pingcap/tidb/util/tracing"
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"github.com/stretchr/testify/require"
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)
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func TestTraceCE(t *testing.T) {
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domain.RunAutoAnalyze = false
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store, dom, clean := testkit.CreateMockStoreAndDomain(t)
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defer clean()
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tk := testkit.NewTestKit(t, store)
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tk.MustExec("use test")
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tk.MustExec("drop table if exists t")
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tk.MustExec("create table t(a int, b int, d varchar(10), index idx(a, b))")
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tk.MustExec(`insert into t values(1, 1, "aaa"),
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(1, 1, "bbb"),
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(1, 2, "ccc"),
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(1, 2, "ddd"),
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(2, 2, "aaa"),
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(2, 3, "bbb")`)
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tk.MustExec("analyze table t")
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var (
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in []string
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out []struct {
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Expr string
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Trace []*tracing.CETraceRecord
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}
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)
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traceSuiteData := statistics.GetTraceSuiteData()
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traceSuiteData.GetTestCases(t, &in, &out)
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// Load needed statistics.
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for _, tt := range in {
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sql := "explain select * from t where " + tt
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tk.MustExec(sql)
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}
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statsHandle := dom.StatsHandle()
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err := statsHandle.LoadNeededHistograms()
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require.NoError(t, err)
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sctx := tk.Session().(sessionctx.Context)
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stmtCtx := sctx.GetSessionVars().StmtCtx
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is := sctx.GetInfoSchema().(infoschema.InfoSchema)
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p := parser.New()
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for i, expr := range in {
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sql := "explain select * from t where " + expr
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stmtCtx.EnableOptimizerCETrace = true
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stmtCtx.OptimizerCETrace = nil
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stmt, err := p.ParseOneStmt(sql, "", "")
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require.NoError(t, err)
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_, _, err = plannercore.OptimizeAstNode(context.Background(), sctx, stmt, is)
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require.NoError(t, err)
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testdata.OnRecord(func() {
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out[i].Expr = expr
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out[i].Trace = sctx.GetSessionVars().StmtCtx.OptimizerCETrace
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})
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require.ElementsMatch(t, sctx.GetSessionVars().StmtCtx.OptimizerCETrace, out[i].Trace)
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}
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}
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