// 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, // See the License for the specific language governing permissions and // limitations under the License. package aggfuncs_test import ( "fmt" "testing" "time" . "github.com/pingcap/check" "github.com/pingcap/parser" "github.com/pingcap/parser/ast" "github.com/pingcap/parser/mysql" "github.com/pingcap/tidb/executor/aggfuncs" "github.com/pingcap/tidb/expression" "github.com/pingcap/tidb/expression/aggregation" "github.com/pingcap/tidb/planner/util" "github.com/pingcap/tidb/sessionctx" "github.com/pingcap/tidb/types" "github.com/pingcap/tidb/types/json" "github.com/pingcap/tidb/util/chunk" "github.com/pingcap/tidb/util/mock" ) var _ = Suite(&testSuite{}) func TestT(t *testing.T) { CustomVerboseFlag = true *CustomParallelSuiteFlag = true TestingT(t) } type testSuite struct { *parser.Parser ctx sessionctx.Context } func (s *testSuite) SetUpSuite(c *C) { s.Parser = parser.New() s.ctx = mock.NewContext() s.ctx.GetSessionVars().StmtCtx.TimeZone = time.Local } func (s *testSuite) TearDownSuite(c *C) { } func (s *testSuite) SetUpTest(c *C) { s.ctx.GetSessionVars().PlanColumnID = 0 } func (s *testSuite) TearDownTest(c *C) { s.ctx.GetSessionVars().StmtCtx.SetWarnings(nil) } type aggTest struct { dataType *types.FieldType numRows int dataGen func(i int) types.Datum funcName string results []types.Datum orderBy bool } func (p *aggTest) genSrcChk() *chunk.Chunk { srcChk := chunk.NewChunkWithCapacity([]*types.FieldType{p.dataType}, p.numRows) for i := 0; i < p.numRows; i++ { dt := p.dataGen(i) srcChk.AppendDatum(0, &dt) } srcChk.AppendDatum(0, &types.Datum{}) return srcChk } // messUpChunk messes up the chunk for testing memory reference. func (p *aggTest) messUpChunk(c *chunk.Chunk) { for i := 0; i < p.numRows; i++ { raw := c.Column(0).GetRaw(i) for i := range raw { raw[i] = 255 } } } type multiArgsAggTest struct { dataTypes []*types.FieldType retType *types.FieldType numRows int dataGens []func(i int) types.Datum funcName string results []types.Datum orderBy bool } func (p *multiArgsAggTest) genSrcChk() *chunk.Chunk { srcChk := chunk.NewChunkWithCapacity(p.dataTypes, p.numRows) for i := 0; i < p.numRows; i++ { for j := 0; j < len(p.dataGens); j++ { fdt := p.dataGens[j](i) srcChk.AppendDatum(j, &fdt) } } srcChk.AppendDatum(0, &types.Datum{}) return srcChk } // messUpChunk messes up the chunk for testing memory reference. func (p *multiArgsAggTest) messUpChunk(c *chunk.Chunk) { for i := 0; i < p.numRows; i++ { for j := 0; j < len(p.dataGens); j++ { raw := c.Column(j).GetRaw(i) for i := range raw { raw[i] = 255 } } } } func (s *testSuite) testMergePartialResult(c *C, p aggTest) { srcChk := p.genSrcChk() iter := chunk.NewIterator4Chunk(srcChk) args := []expression.Expression{&expression.Column{RetType: p.dataType, Index: 0}} if p.funcName == ast.AggFuncGroupConcat { args = append(args, &expression.Constant{Value: types.NewStringDatum(" "), RetType: types.NewFieldType(mysql.TypeString)}) } desc, err := aggregation.NewAggFuncDesc(s.ctx, p.funcName, args, false) c.Assert(err, IsNil) if p.orderBy { desc.OrderByItems = []*util.ByItems{ {Expr: args[0], Desc: true}, } } partialDesc, finalDesc := desc.Split([]int{0, 1}) // build partial func for partial phase. partialFunc := aggfuncs.Build(s.ctx, partialDesc, 0) partialResult := partialFunc.AllocPartialResult() // build final func for final phase. finalFunc := aggfuncs.Build(s.ctx, finalDesc, 0) finalPr := finalFunc.AllocPartialResult() resultChk := chunk.NewChunkWithCapacity([]*types.FieldType{p.dataType}, 1) if p.funcName == ast.AggFuncApproxCountDistinct { resultChk = chunk.NewChunkWithCapacity([]*types.FieldType{types.NewFieldType(mysql.TypeString)}, 1) } // update partial result. for row := iter.Begin(); row != iter.End(); row = iter.Next() { partialFunc.UpdatePartialResult(s.ctx, []chunk.Row{row}, partialResult) } p.messUpChunk(srcChk) partialFunc.AppendFinalResult2Chunk(s.ctx, partialResult, resultChk) dt := resultChk.GetRow(0).GetDatum(0, p.dataType) if p.funcName == ast.AggFuncApproxCountDistinct { dt = resultChk.GetRow(0).GetDatum(0, types.NewFieldType(mysql.TypeString)) } result, err := dt.CompareDatum(s.ctx.GetSessionVars().StmtCtx, &p.results[0]) c.Assert(err, IsNil) c.Assert(result, Equals, 0, Commentf("%v != %v", dt.String(), p.results[0])) err = finalFunc.MergePartialResult(s.ctx, partialResult, finalPr) c.Assert(err, IsNil) partialFunc.ResetPartialResult(partialResult) srcChk = p.genSrcChk() iter = chunk.NewIterator4Chunk(srcChk) iter.Begin() iter.Next() for row := iter.Next(); row != iter.End(); row = iter.Next() { partialFunc.UpdatePartialResult(s.ctx, []chunk.Row{row}, partialResult) } p.messUpChunk(srcChk) resultChk.Reset() partialFunc.AppendFinalResult2Chunk(s.ctx, partialResult, resultChk) dt = resultChk.GetRow(0).GetDatum(0, p.dataType) if p.funcName == ast.AggFuncApproxCountDistinct { dt = resultChk.GetRow(0).GetDatum(0, types.NewFieldType(mysql.TypeString)) } result, err = dt.CompareDatum(s.ctx.GetSessionVars().StmtCtx, &p.results[1]) c.Assert(err, IsNil) c.Assert(result, Equals, 0, Commentf("%v != %v", dt.String(), p.results[1])) err = finalFunc.MergePartialResult(s.ctx, partialResult, finalPr) c.Assert(err, IsNil) if p.funcName == ast.AggFuncApproxCountDistinct { resultChk = chunk.NewChunkWithCapacity([]*types.FieldType{types.NewFieldType(mysql.TypeLonglong)}, 1) } resultChk.Reset() err = finalFunc.AppendFinalResult2Chunk(s.ctx, finalPr, resultChk) c.Assert(err, IsNil) dt = resultChk.GetRow(0).GetDatum(0, p.dataType) if p.funcName == ast.AggFuncApproxCountDistinct { dt = resultChk.GetRow(0).GetDatum(0, types.NewFieldType(mysql.TypeLonglong)) } result, err = dt.CompareDatum(s.ctx.GetSessionVars().StmtCtx, &p.results[2]) c.Assert(err, IsNil) c.Assert(result, Equals, 0, Commentf("%v != %v", dt.String(), p.results[2])) } func buildAggTester(funcName string, tp byte, numRows int, results ...interface{}) aggTest { return buildAggTesterWithFieldType(funcName, types.NewFieldType(tp), numRows, results...) } func buildAggTesterWithFieldType(funcName string, ft *types.FieldType, numRows int, results ...interface{}) aggTest { pt := aggTest{ dataType: ft, numRows: numRows, funcName: funcName, dataGen: getDataGenFunc(ft), } for _, result := range results { pt.results = append(pt.results, types.NewDatum(result)) } return pt } func (s *testSuite) testMultiArgsMergePartialResult(c *C, p multiArgsAggTest) { srcChk := p.genSrcChk() iter := chunk.NewIterator4Chunk(srcChk) args := make([]expression.Expression, len(p.dataTypes)) for k := 0; k < len(p.dataTypes); k++ { args[k] = &expression.Column{RetType: p.dataTypes[k], Index: k} } desc, err := aggregation.NewAggFuncDesc(s.ctx, p.funcName, args, false) c.Assert(err, IsNil) if p.orderBy { desc.OrderByItems = []*util.ByItems{ {Expr: args[0], Desc: true}, } } partialDesc, finalDesc := desc.Split([]int{0, 1}) // build partial func for partial phase. partialFunc := aggfuncs.Build(s.ctx, partialDesc, 0) partialResult := partialFunc.AllocPartialResult() // build final func for final phase. finalFunc := aggfuncs.Build(s.ctx, finalDesc, 0) finalPr := finalFunc.AllocPartialResult() resultChk := chunk.NewChunkWithCapacity([]*types.FieldType{p.retType}, 1) // update partial result. for row := iter.Begin(); row != iter.End(); row = iter.Next() { partialFunc.UpdatePartialResult(s.ctx, []chunk.Row{row}, partialResult) } p.messUpChunk(srcChk) partialFunc.AppendFinalResult2Chunk(s.ctx, partialResult, resultChk) dt := resultChk.GetRow(0).GetDatum(0, p.retType) result, err := dt.CompareDatum(s.ctx.GetSessionVars().StmtCtx, &p.results[0]) c.Assert(err, IsNil) c.Assert(result, Equals, 0) err = finalFunc.MergePartialResult(s.ctx, partialResult, finalPr) c.Assert(err, IsNil) partialFunc.ResetPartialResult(partialResult) srcChk = p.genSrcChk() iter = chunk.NewIterator4Chunk(srcChk) iter.Begin() iter.Next() for row := iter.Next(); row != iter.End(); row = iter.Next() { partialFunc.UpdatePartialResult(s.ctx, []chunk.Row{row}, partialResult) } p.messUpChunk(srcChk) resultChk.Reset() partialFunc.AppendFinalResult2Chunk(s.ctx, partialResult, resultChk) dt = resultChk.GetRow(0).GetDatum(0, p.retType) result, err = dt.CompareDatum(s.ctx.GetSessionVars().StmtCtx, &p.results[1]) c.Assert(err, IsNil) c.Assert(result, Equals, 0) err = finalFunc.MergePartialResult(s.ctx, partialResult, finalPr) c.Assert(err, IsNil) resultChk.Reset() err = finalFunc.AppendFinalResult2Chunk(s.ctx, finalPr, resultChk) c.Assert(err, IsNil) dt = resultChk.GetRow(0).GetDatum(0, p.retType) result, err = dt.CompareDatum(s.ctx.GetSessionVars().StmtCtx, &p.results[2]) c.Assert(err, IsNil) c.Assert(result, Equals, 0) } // for multiple args in aggfuncs such as json_objectagg(c1, c2) func buildMultiArgsAggTester(funcName string, tps []byte, rt byte, numRows int, results ...interface{}) multiArgsAggTest { fts := make([]*types.FieldType, len(tps)) for i := 0; i < len(tps); i++ { fts[i] = types.NewFieldType(tps[i]) } return buildMultiArgsAggTesterWithFieldType(funcName, fts, types.NewFieldType(rt), numRows, results...) } func buildMultiArgsAggTesterWithFieldType(funcName string, fts []*types.FieldType, rt *types.FieldType, numRows int, results ...interface{}) multiArgsAggTest { dataGens := make([]func(i int) types.Datum, len(fts)) for i := 0; i < len(fts); i++ { dataGens[i] = getDataGenFunc(fts[i]) } mt := multiArgsAggTest{ dataTypes: fts, retType: rt, numRows: numRows, funcName: funcName, dataGens: dataGens, } for _, result := range results { mt.results = append(mt.results, types.NewDatum(result)) } return mt } func getDataGenFunc(ft *types.FieldType) func(i int) types.Datum { switch ft.Tp { case mysql.TypeLonglong: return func(i int) types.Datum { return types.NewIntDatum(int64(i)) } case mysql.TypeFloat: return func(i int) types.Datum { return types.NewFloat32Datum(float32(i)) } case mysql.TypeNewDecimal: return func(i int) types.Datum { return types.NewDecimalDatum(types.NewDecFromInt(int64(i))) } case mysql.TypeDouble: return func(i int) types.Datum { return types.NewFloat64Datum(float64(i)) } case mysql.TypeString: return func(i int) types.Datum { return types.NewStringDatum(fmt.Sprintf("%d", i)) } case mysql.TypeDate: return func(i int) types.Datum { return types.NewTimeDatum(types.TimeFromDays(int64(i + 365))) } case mysql.TypeDuration: return func(i int) types.Datum { return types.NewDurationDatum(types.Duration{Duration: time.Duration(i)}) } case mysql.TypeJSON: return func(i int) types.Datum { return types.NewDatum(json.CreateBinary(int64(i))) } case mysql.TypeEnum: elems := []string{"a", "b", "c", "d", "e"} return func(i int) types.Datum { e, _ := types.ParseEnumValue(elems, uint64(i+1)) return types.NewCollateMysqlEnumDatum(e, ft.Collate) } case mysql.TypeSet: elems := []string{"a", "b", "c", "d", "e"} return func(i int) types.Datum { e, _ := types.ParseSetValue(elems, uint64(i+1)) return types.NewMysqlSetDatum(e, ft.Collate) } } return nil } func (s *testSuite) testAggFunc(c *C, p aggTest) { srcChk := p.genSrcChk() args := []expression.Expression{&expression.Column{RetType: p.dataType, Index: 0}} if p.funcName == ast.AggFuncGroupConcat { args = append(args, &expression.Constant{Value: types.NewStringDatum(" "), RetType: types.NewFieldType(mysql.TypeString)}) } if p.funcName == ast.AggFuncApproxPercentile { args = append(args, &expression.Constant{Value: types.NewIntDatum(50), RetType: types.NewFieldType(mysql.TypeLong)}) } desc, err := aggregation.NewAggFuncDesc(s.ctx, p.funcName, args, false) c.Assert(err, IsNil) if p.orderBy { desc.OrderByItems = []*util.ByItems{ {Expr: args[0], Desc: true}, } } finalFunc := aggfuncs.Build(s.ctx, desc, 0) finalPr := finalFunc.AllocPartialResult() resultChk := chunk.NewChunkWithCapacity([]*types.FieldType{desc.RetTp}, 1) iter := chunk.NewIterator4Chunk(srcChk) for row := iter.Begin(); row != iter.End(); row = iter.Next() { finalFunc.UpdatePartialResult(s.ctx, []chunk.Row{row}, finalPr) } p.messUpChunk(srcChk) finalFunc.AppendFinalResult2Chunk(s.ctx, finalPr, resultChk) dt := resultChk.GetRow(0).GetDatum(0, desc.RetTp) result, err := dt.CompareDatum(s.ctx.GetSessionVars().StmtCtx, &p.results[1]) c.Assert(err, IsNil) c.Assert(result, Equals, 0, Commentf("%v != %v", dt.String(), p.results[1])) // test the empty input resultChk.Reset() finalFunc.ResetPartialResult(finalPr) finalFunc.AppendFinalResult2Chunk(s.ctx, finalPr, resultChk) dt = resultChk.GetRow(0).GetDatum(0, desc.RetTp) result, err = dt.CompareDatum(s.ctx.GetSessionVars().StmtCtx, &p.results[0]) c.Assert(err, IsNil) c.Assert(result, Equals, 0, Commentf("%v != %v", dt.String(), p.results[0])) // test the agg func with distinct desc, err = aggregation.NewAggFuncDesc(s.ctx, p.funcName, args, true) c.Assert(err, IsNil) if p.orderBy { desc.OrderByItems = []*util.ByItems{ {Expr: args[0], Desc: true}, } } finalFunc = aggfuncs.Build(s.ctx, desc, 0) finalPr = finalFunc.AllocPartialResult() resultChk.Reset() srcChk = p.genSrcChk() iter = chunk.NewIterator4Chunk(srcChk) for row := iter.Begin(); row != iter.End(); row = iter.Next() { finalFunc.UpdatePartialResult(s.ctx, []chunk.Row{row}, finalPr) } p.messUpChunk(srcChk) srcChk = p.genSrcChk() iter = chunk.NewIterator4Chunk(srcChk) for row := iter.Begin(); row != iter.End(); row = iter.Next() { finalFunc.UpdatePartialResult(s.ctx, []chunk.Row{row}, finalPr) } p.messUpChunk(srcChk) finalFunc.AppendFinalResult2Chunk(s.ctx, finalPr, resultChk) dt = resultChk.GetRow(0).GetDatum(0, desc.RetTp) result, err = dt.CompareDatum(s.ctx.GetSessionVars().StmtCtx, &p.results[1]) c.Assert(err, IsNil) c.Assert(result, Equals, 0, Commentf("%v != %v", dt.String(), p.results[1])) // test the empty input resultChk.Reset() finalFunc.ResetPartialResult(finalPr) finalFunc.AppendFinalResult2Chunk(s.ctx, finalPr, resultChk) dt = resultChk.GetRow(0).GetDatum(0, desc.RetTp) result, err = dt.CompareDatum(s.ctx.GetSessionVars().StmtCtx, &p.results[0]) c.Assert(err, IsNil) c.Assert(result, Equals, 0, Commentf("%v != %v", dt.String(), p.results[0])) } func (s *testSuite) testMultiArgsAggFunc(c *C, p multiArgsAggTest) { srcChk := p.genSrcChk() args := make([]expression.Expression, len(p.dataTypes)) for k := 0; k < len(p.dataTypes); k++ { args[k] = &expression.Column{RetType: p.dataTypes[k], Index: k} } if p.funcName == ast.AggFuncGroupConcat { args = append(args, &expression.Constant{Value: types.NewStringDatum(" "), RetType: types.NewFieldType(mysql.TypeString)}) } desc, err := aggregation.NewAggFuncDesc(s.ctx, p.funcName, args, false) c.Assert(err, IsNil) if p.orderBy { desc.OrderByItems = []*util.ByItems{ {Expr: args[0], Desc: true}, } } finalFunc := aggfuncs.Build(s.ctx, desc, 0) finalPr := finalFunc.AllocPartialResult() resultChk := chunk.NewChunkWithCapacity([]*types.FieldType{desc.RetTp}, 1) iter := chunk.NewIterator4Chunk(srcChk) for row := iter.Begin(); row != iter.End(); row = iter.Next() { finalFunc.UpdatePartialResult(s.ctx, []chunk.Row{row}, finalPr) } p.messUpChunk(srcChk) finalFunc.AppendFinalResult2Chunk(s.ctx, finalPr, resultChk) dt := resultChk.GetRow(0).GetDatum(0, desc.RetTp) result, err := dt.CompareDatum(s.ctx.GetSessionVars().StmtCtx, &p.results[1]) c.Assert(err, IsNil) c.Assert(result, Equals, 0, Commentf("%v != %v", dt.String(), p.results[1])) // test the empty input resultChk.Reset() finalFunc.ResetPartialResult(finalPr) finalFunc.AppendFinalResult2Chunk(s.ctx, finalPr, resultChk) dt = resultChk.GetRow(0).GetDatum(0, desc.RetTp) result, err = dt.CompareDatum(s.ctx.GetSessionVars().StmtCtx, &p.results[0]) c.Assert(err, IsNil) c.Assert(result, Equals, 0, Commentf("%v != %v", dt.String(), p.results[0])) // test the agg func with distinct desc, err = aggregation.NewAggFuncDesc(s.ctx, p.funcName, args, true) c.Assert(err, IsNil) if p.orderBy { desc.OrderByItems = []*util.ByItems{ {Expr: args[0], Desc: true}, } } finalFunc = aggfuncs.Build(s.ctx, desc, 0) finalPr = finalFunc.AllocPartialResult() resultChk.Reset() srcChk = p.genSrcChk() iter = chunk.NewIterator4Chunk(srcChk) for row := iter.Begin(); row != iter.End(); row = iter.Next() { finalFunc.UpdatePartialResult(s.ctx, []chunk.Row{row}, finalPr) } p.messUpChunk(srcChk) srcChk = p.genSrcChk() iter = chunk.NewIterator4Chunk(srcChk) for row := iter.Begin(); row != iter.End(); row = iter.Next() { finalFunc.UpdatePartialResult(s.ctx, []chunk.Row{row}, finalPr) } p.messUpChunk(srcChk) finalFunc.AppendFinalResult2Chunk(s.ctx, finalPr, resultChk) dt = resultChk.GetRow(0).GetDatum(0, desc.RetTp) result, err = dt.CompareDatum(s.ctx.GetSessionVars().StmtCtx, &p.results[1]) c.Assert(err, IsNil) c.Assert(result, Equals, 0, Commentf("%v != %v", dt.String(), p.results[1])) // test the empty input resultChk.Reset() finalFunc.ResetPartialResult(finalPr) finalFunc.AppendFinalResult2Chunk(s.ctx, finalPr, resultChk) dt = resultChk.GetRow(0).GetDatum(0, desc.RetTp) result, err = dt.CompareDatum(s.ctx.GetSessionVars().StmtCtx, &p.results[0]) c.Assert(err, IsNil) c.Assert(result, Equals, 0) } func (s *testSuite) benchmarkAggFunc(b *testing.B, p aggTest) { srcChk := chunk.NewChunkWithCapacity([]*types.FieldType{p.dataType}, p.numRows) for i := 0; i < p.numRows; i++ { dt := p.dataGen(i) srcChk.AppendDatum(0, &dt) } srcChk.AppendDatum(0, &types.Datum{}) args := []expression.Expression{&expression.Column{RetType: p.dataType, Index: 0}} if p.funcName == ast.AggFuncGroupConcat { args = append(args, &expression.Constant{Value: types.NewStringDatum(" "), RetType: types.NewFieldType(mysql.TypeString)}) } desc, err := aggregation.NewAggFuncDesc(s.ctx, p.funcName, args, false) if err != nil { b.Fatal(err) } if p.orderBy { desc.OrderByItems = []*util.ByItems{ {Expr: args[0], Desc: true}, } } finalFunc := aggfuncs.Build(s.ctx, desc, 0) resultChk := chunk.NewChunkWithCapacity([]*types.FieldType{desc.RetTp}, 1) iter := chunk.NewIterator4Chunk(srcChk) input := make([]chunk.Row, 0, iter.Len()) for row := iter.Begin(); row != iter.End(); row = iter.Next() { input = append(input, row) } b.Run(fmt.Sprintf("%v/%v", p.funcName, p.dataType), func(b *testing.B) { s.baseBenchmarkAggFunc(b, finalFunc, input, resultChk) }) desc, err = aggregation.NewAggFuncDesc(s.ctx, p.funcName, args, true) if err != nil { b.Fatal(err) } if p.orderBy { desc.OrderByItems = []*util.ByItems{ {Expr: args[0], Desc: true}, } } finalFunc = aggfuncs.Build(s.ctx, desc, 0) resultChk.Reset() b.Run(fmt.Sprintf("%v(distinct)/%v", p.funcName, p.dataType), func(b *testing.B) { s.baseBenchmarkAggFunc(b, finalFunc, input, resultChk) }) } func (s *testSuite) benchmarkMultiArgsAggFunc(b *testing.B, p multiArgsAggTest) { srcChk := chunk.NewChunkWithCapacity(p.dataTypes, p.numRows) for i := 0; i < p.numRows; i++ { for j := 0; j < len(p.dataGens); j++ { fdt := p.dataGens[j](i) srcChk.AppendDatum(j, &fdt) } } srcChk.AppendDatum(0, &types.Datum{}) args := make([]expression.Expression, len(p.dataTypes)) for k := 0; k < len(p.dataTypes); k++ { args[k] = &expression.Column{RetType: p.dataTypes[k], Index: k} } if p.funcName == ast.AggFuncGroupConcat { args = append(args, &expression.Constant{Value: types.NewStringDatum(" "), RetType: types.NewFieldType(mysql.TypeString)}) } desc, err := aggregation.NewAggFuncDesc(s.ctx, p.funcName, args, false) if err != nil { b.Fatal(err) } if p.orderBy { desc.OrderByItems = []*util.ByItems{ {Expr: args[0], Desc: true}, } } finalFunc := aggfuncs.Build(s.ctx, desc, 0) resultChk := chunk.NewChunkWithCapacity([]*types.FieldType{desc.RetTp}, 1) iter := chunk.NewIterator4Chunk(srcChk) input := make([]chunk.Row, 0, iter.Len()) for row := iter.Begin(); row != iter.End(); row = iter.Next() { input = append(input, row) } b.Run(fmt.Sprintf("%v/%v", p.funcName, p.dataTypes), func(b *testing.B) { s.baseBenchmarkAggFunc(b, finalFunc, input, resultChk) }) desc, err = aggregation.NewAggFuncDesc(s.ctx, p.funcName, args, true) if err != nil { b.Fatal(err) } if p.orderBy { desc.OrderByItems = []*util.ByItems{ {Expr: args[0], Desc: true}, } } finalFunc = aggfuncs.Build(s.ctx, desc, 0) resultChk.Reset() b.Run(fmt.Sprintf("%v(distinct)/%v", p.funcName, p.dataTypes), func(b *testing.B) { s.baseBenchmarkAggFunc(b, finalFunc, input, resultChk) }) } func (s *testSuite) baseBenchmarkAggFunc(b *testing.B, finalFunc aggfuncs.AggFunc, input []chunk.Row, output *chunk.Chunk) { finalPr := finalFunc.AllocPartialResult() output.Reset() b.ResetTimer() for i := 0; i < b.N; i++ { finalFunc.UpdatePartialResult(s.ctx, input, finalPr) b.StopTimer() output.Reset() b.StartTimer() } }