81 lines
2.3 KiB
Go
81 lines
2.3 KiB
Go
// Copyright 2019 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 cascades
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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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"github.com/pingcap/tidb/parser/model"
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plannercore "github.com/pingcap/tidb/planner/core"
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"github.com/pingcap/tidb/planner/memo"
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"github.com/pingcap/tidb/testkit/testdata"
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"github.com/stretchr/testify/require"
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)
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func TestGroupStringer(t *testing.T) {
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optimizer := NewOptimizer()
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optimizer.ResetTransformationRules(map[memo.Operand][]Transformation{
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memo.OperandSelection: {
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NewRulePushSelDownTiKVSingleGather(),
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NewRulePushSelDownTableScan(),
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},
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memo.OperandDataSource: {
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NewRuleEnumeratePaths(),
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},
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})
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defer func() {
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optimizer.ResetTransformationRules(DefaultRuleBatches...)
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}()
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var input []string
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var output []struct {
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SQL string
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Result []string
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}
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stringerSuiteData.LoadTestCases(t, &input, &output)
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p := parser.New()
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ctx := plannercore.MockContext()
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is := infoschema.MockInfoSchema([]*model.TableInfo{plannercore.MockSignedTable()})
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domain.GetDomain(ctx).MockInfoCacheAndLoadInfoSchema(is)
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for i, sql := range input {
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stmt, err := p.ParseOneStmt(sql, "", "")
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require.NoError(t, err)
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plan, _, err := plannercore.BuildLogicalPlanForTest(context.Background(), ctx, stmt, is)
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require.NoError(t, err)
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logic, ok := plan.(plannercore.LogicalPlan)
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require.True(t, ok)
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logic, err = optimizer.onPhasePreprocessing(ctx, logic)
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require.NoError(t, err)
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group := memo.Convert2Group(logic)
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require.NoError(t, optimizer.onPhaseExploration(ctx, group))
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group.BuildKeyInfo()
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testdata.OnRecord(func() {
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output[i].SQL = sql
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output[i].Result = ToString(group)
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})
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require.Equalf(t, output[i].Result, ToString(group), "case:%v, sql:%s", i, sql)
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}
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}
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