103 lines
4.7 KiB
Go
103 lines
4.7 KiB
Go
// Copyright 2020 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 aggfuncs_test
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import (
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"testing"
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"github.com/pingcap/tidb/pkg/executor/aggfuncs"
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"github.com/pingcap/tidb/pkg/parser/ast"
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"github.com/pingcap/tidb/pkg/parser/mysql"
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"github.com/pingcap/tidb/pkg/types"
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"github.com/pingcap/tidb/pkg/util/chunk"
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)
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func getEvaluatedMemDelta(row *chunk.Row, dataType *types.FieldType) (memDelta int64) {
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switch dataType.GetType() {
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case mysql.TypeString:
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memDelta = int64(len(row.GetString(0)))
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case mysql.TypeJSON:
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memDelta = int64(len(row.GetJSON(0).Value))
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}
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return
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}
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func lastValueEvaluateRowUpdateMemDeltaGens(srcChk *chunk.Chunk, dataType *types.FieldType) (memDeltas []int64, err error) {
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memDeltas = make([]int64, 0)
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lastMemDelta := int64(0)
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for range srcChk.NumRows() {
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row := srcChk.GetRow(0)
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curMemDelta := getEvaluatedMemDelta(&row, dataType)
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memDeltas = append(memDeltas, curMemDelta-lastMemDelta)
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lastMemDelta = curMemDelta
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}
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return memDeltas, nil
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}
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func nthValueEvaluateRowUpdateMemDeltaGens(nth int) updateMemDeltaGens {
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return func(srcChk *chunk.Chunk, dataType *types.FieldType) (memDeltas []int64, err error) {
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memDeltas = make([]int64, 0)
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for range srcChk.NumRows() {
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memDeltas = append(memDeltas, int64(0))
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}
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if nth < srcChk.NumRows() {
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row := srcChk.GetRow(nth - 1)
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memDeltas[nth-1] = getEvaluatedMemDelta(&row, dataType)
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}
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return memDeltas, nil
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}
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}
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func TestMemValue(t *testing.T) {
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firstMemDeltaGens := nthValueEvaluateRowUpdateMemDeltaGens(1)
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secondMemDeltaGens := nthValueEvaluateRowUpdateMemDeltaGens(2)
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fifthMemDeltaGens := nthValueEvaluateRowUpdateMemDeltaGens(5)
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tests := []windowMemTest{
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buildWindowMemTester(ast.WindowFuncFirstValue, mysql.TypeLonglong, 0, 2, 1,
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aggfuncs.DefPartialResult4FirstValueSize+aggfuncs.DefValue4IntSize, firstMemDeltaGens),
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buildWindowMemTester(ast.WindowFuncFirstValue, mysql.TypeFloat, 0, 2, 1,
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aggfuncs.DefPartialResult4FirstValueSize+aggfuncs.DefValue4Float32Size, firstMemDeltaGens),
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buildWindowMemTester(ast.WindowFuncFirstValue, mysql.TypeDouble, 0, 2, 1,
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aggfuncs.DefPartialResult4FirstValueSize+aggfuncs.DefValue4Float64Size, firstMemDeltaGens),
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buildWindowMemTester(ast.WindowFuncFirstValue, mysql.TypeNewDecimal, 0, 2, 1,
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aggfuncs.DefPartialResult4FirstValueSize+aggfuncs.DefValue4DecimalSize, firstMemDeltaGens),
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buildWindowMemTester(ast.WindowFuncFirstValue, mysql.TypeString, 0, 2, 1,
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aggfuncs.DefPartialResult4FirstValueSize+aggfuncs.DefValue4StringSize, firstMemDeltaGens),
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buildWindowMemTester(ast.WindowFuncFirstValue, mysql.TypeDate, 0, 2, 1,
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aggfuncs.DefPartialResult4FirstValueSize+aggfuncs.DefValue4TimeSize, firstMemDeltaGens),
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buildWindowMemTester(ast.WindowFuncFirstValue, mysql.TypeDuration, 0, 2, 1,
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aggfuncs.DefPartialResult4FirstValueSize+aggfuncs.DefValue4DurationSize, firstMemDeltaGens),
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buildWindowMemTester(ast.WindowFuncFirstValue, mysql.TypeJSON, 0, 2, 1,
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aggfuncs.DefPartialResult4FirstValueSize+aggfuncs.DefValue4JSONSize, firstMemDeltaGens),
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buildWindowMemTester(ast.WindowFuncLastValue, mysql.TypeLonglong, 1, 2, 0,
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aggfuncs.DefPartialResult4LastValueSize+aggfuncs.DefValue4IntSize, lastValueEvaluateRowUpdateMemDeltaGens),
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buildWindowMemTester(ast.WindowFuncLastValue, mysql.TypeString, 1, 2, 0,
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aggfuncs.DefPartialResult4LastValueSize+aggfuncs.DefValue4StringSize, lastValueEvaluateRowUpdateMemDeltaGens),
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buildWindowMemTester(ast.WindowFuncLastValue, mysql.TypeJSON, 1, 2, 0,
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aggfuncs.DefPartialResult4LastValueSize+aggfuncs.DefValue4JSONSize, lastValueEvaluateRowUpdateMemDeltaGens),
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buildWindowMemTester(ast.WindowFuncNthValue, mysql.TypeLonglong, 2, 3, 0,
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aggfuncs.DefPartialResult4NthValueSize+aggfuncs.DefValue4IntSize, secondMemDeltaGens),
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buildWindowMemTester(ast.WindowFuncNthValue, mysql.TypeLonglong, 5, 3, 0,
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aggfuncs.DefPartialResult4NthValueSize+aggfuncs.DefValue4IntSize, fifthMemDeltaGens),
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buildWindowMemTester(ast.WindowFuncNthValue, mysql.TypeJSON, 2, 3, 0,
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aggfuncs.DefPartialResult4NthValueSize+aggfuncs.DefValue4JSONSize, secondMemDeltaGens),
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buildWindowMemTester(ast.WindowFuncNthValue, mysql.TypeString, 5, 3, 0,
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aggfuncs.DefPartialResult4NthValueSize+aggfuncs.DefValue4StringSize, fifthMemDeltaGens),
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}
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for _, test := range tests {
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testWindowAggMemFunc(t, test)
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}
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}
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