266 lines
9.0 KiB
Go
266 lines
9.0 KiB
Go
// Copyright 2017 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 expression
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import (
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"fmt"
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"testing"
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"github.com/pingcap/tidb/parser/ast"
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"github.com/pingcap/tidb/parser/model"
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"github.com/pingcap/tidb/parser/mysql"
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"github.com/pingcap/tidb/types"
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"github.com/pingcap/tidb/util/chunk"
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"github.com/pingcap/tidb/util/mock"
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"github.com/stretchr/testify/require"
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)
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func TestColumn(t *testing.T) {
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ctx := mock.NewContext()
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col := &Column{RetType: types.NewFieldType(mysql.TypeLonglong), UniqueID: 1}
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require.True(t, col.Equal(nil, col))
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require.False(t, col.Equal(nil, &Column{}))
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require.False(t, col.IsCorrelated())
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require.True(t, col.Equal(nil, col.Decorrelate(nil)))
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marshal, err := col.MarshalJSON()
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require.NoError(t, err)
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require.EqualValues(t, []byte{0x22, 0x43, 0x6f, 0x6c, 0x75, 0x6d, 0x6e, 0x23, 0x31, 0x22}, marshal)
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intDatum := types.NewIntDatum(1)
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corCol := &CorrelatedColumn{Column: *col, Data: &intDatum}
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invalidCorCol := &CorrelatedColumn{Column: Column{}}
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schema := NewSchema(&Column{UniqueID: 1})
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require.True(t, corCol.Equal(nil, corCol))
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require.False(t, corCol.Equal(nil, invalidCorCol))
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require.True(t, corCol.IsCorrelated())
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require.False(t, corCol.ConstItem(nil))
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require.True(t, corCol.Decorrelate(schema).Equal(nil, col))
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require.True(t, invalidCorCol.Decorrelate(schema).Equal(nil, invalidCorCol))
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intCorCol := &CorrelatedColumn{Column: Column{RetType: types.NewFieldType(mysql.TypeLonglong)},
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Data: &intDatum}
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intVal, isNull, err := intCorCol.EvalInt(ctx, chunk.Row{})
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require.Equal(t, int64(1), intVal)
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require.False(t, isNull)
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require.NoError(t, err)
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realDatum := types.NewFloat64Datum(1.2)
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realCorCol := &CorrelatedColumn{Column: Column{RetType: types.NewFieldType(mysql.TypeDouble)},
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Data: &realDatum}
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realVal, isNull, err := realCorCol.EvalReal(ctx, chunk.Row{})
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require.Equal(t, float64(1.2), realVal)
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require.False(t, isNull)
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require.NoError(t, err)
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decimalDatum := types.NewDecimalDatum(types.NewDecFromStringForTest("1.2"))
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decimalCorCol := &CorrelatedColumn{Column: Column{RetType: types.NewFieldType(mysql.TypeNewDecimal)},
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Data: &decimalDatum}
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decVal, isNull, err := decimalCorCol.EvalDecimal(ctx, chunk.Row{})
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require.Zero(t, decVal.Compare(types.NewDecFromStringForTest("1.2")))
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require.False(t, isNull)
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require.NoError(t, err)
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stringDatum := types.NewStringDatum("abc")
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stringCorCol := &CorrelatedColumn{Column: Column{RetType: types.NewFieldType(mysql.TypeVarchar)},
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Data: &stringDatum}
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strVal, isNull, err := stringCorCol.EvalString(ctx, chunk.Row{})
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require.Equal(t, "abc", strVal)
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require.False(t, isNull)
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require.NoError(t, err)
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durationCorCol := &CorrelatedColumn{Column: Column{RetType: types.NewFieldType(mysql.TypeDuration)},
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Data: &durationDatum}
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durationVal, isNull, err := durationCorCol.EvalDuration(ctx, chunk.Row{})
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require.Zero(t, durationVal.Compare(duration))
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require.False(t, isNull)
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require.NoError(t, err)
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timeDatum := types.NewTimeDatum(tm)
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timeCorCol := &CorrelatedColumn{Column: Column{RetType: types.NewFieldType(mysql.TypeDatetime)},
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Data: &timeDatum}
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timeVal, isNull, err := timeCorCol.EvalTime(ctx, chunk.Row{})
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require.Zero(t, timeVal.Compare(tm))
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require.False(t, isNull)
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require.NoError(t, err)
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}
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func TestColumnHashCode(t *testing.T) {
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col1 := &Column{
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UniqueID: 12,
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}
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require.EqualValues(t, []byte{0x1, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc}, col1.HashCode(nil))
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col2 := &Column{
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UniqueID: 2,
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}
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require.EqualValues(t, []byte{0x1, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2}, col2.HashCode(nil))
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}
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func TestColumn2Expr(t *testing.T) {
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cols := make([]*Column, 0, 5)
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for i := 0; i < 5; i++ {
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cols = append(cols, &Column{UniqueID: int64(i)})
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}
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exprs := Column2Exprs(cols)
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for i := range exprs {
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require.True(t, exprs[i].Equal(nil, cols[i]))
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}
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}
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func TestColInfo2Col(t *testing.T) {
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col0, col1 := &Column{ID: 0}, &Column{ID: 1}
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cols := []*Column{col0, col1}
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colInfo := &model.ColumnInfo{ID: 0}
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res := ColInfo2Col(cols, colInfo)
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require.True(t, res.Equal(nil, col1))
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colInfo.ID = 3
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res = ColInfo2Col(cols, colInfo)
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require.Nil(t, res)
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}
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func TestIndexInfo2Cols(t *testing.T) {
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col0 := &Column{UniqueID: 0, ID: 0, RetType: types.NewFieldType(mysql.TypeLonglong)}
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col1 := &Column{UniqueID: 1, ID: 1, RetType: types.NewFieldType(mysql.TypeLonglong)}
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colInfo0 := &model.ColumnInfo{ID: 0, Name: model.NewCIStr("0")}
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colInfo1 := &model.ColumnInfo{ID: 1, Name: model.NewCIStr("1")}
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indexCol0, indexCol1 := &model.IndexColumn{Name: model.NewCIStr("0")}, &model.IndexColumn{Name: model.NewCIStr("1")}
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indexInfo := &model.IndexInfo{Columns: []*model.IndexColumn{indexCol0, indexCol1}}
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cols := []*Column{col0}
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colInfos := []*model.ColumnInfo{colInfo0}
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resCols, lengths := IndexInfo2PrefixCols(colInfos, cols, indexInfo)
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require.Len(t, resCols, 1)
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require.Len(t, lengths, 1)
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require.True(t, resCols[0].Equal(nil, col0))
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cols = []*Column{col1}
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colInfos = []*model.ColumnInfo{colInfo1}
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resCols, lengths = IndexInfo2PrefixCols(colInfos, cols, indexInfo)
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require.Len(t, resCols, 0)
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require.Len(t, lengths, 0)
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cols = []*Column{col0, col1}
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colInfos = []*model.ColumnInfo{colInfo0, colInfo1}
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resCols, lengths = IndexInfo2PrefixCols(colInfos, cols, indexInfo)
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require.Len(t, resCols, 2)
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require.Len(t, lengths, 2)
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require.True(t, resCols[0].Equal(nil, col0))
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require.True(t, resCols[1].Equal(nil, col1))
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}
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func TestColHybird(t *testing.T) {
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ctx := mock.NewContext()
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// bit
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ft := types.NewFieldType(mysql.TypeBit)
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col := &Column{RetType: ft, Index: 0}
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input := chunk.New([]*types.FieldType{ft}, 1024, 1024)
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for i := 0; i < 1024; i++ {
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num, err := types.ParseBitStr(fmt.Sprintf("0b%b", i))
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require.NoError(t, err)
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input.AppendBytes(0, num)
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}
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result := chunk.NewColumn(types.NewFieldType(mysql.TypeLonglong), 1024)
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require.Nil(t, col.VecEvalInt(ctx, input, result))
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it := chunk.NewIterator4Chunk(input)
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for row, i := it.Begin(), 0; row != it.End(); row, i = it.Next(), i+1 {
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v, _, err := col.EvalInt(ctx, row)
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require.NoError(t, err)
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require.Equal(t, result.GetInt64(i), v)
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}
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// use a container which has the different field type with bit
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result = chunk.NewColumn(types.NewFieldType(mysql.TypeString), 1024)
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require.Nil(t, col.VecEvalInt(ctx, input, result))
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for row, i := it.Begin(), 0; row != it.End(); row, i = it.Next(), i+1 {
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v, _, err := col.EvalInt(ctx, row)
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require.NoError(t, err)
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require.Equal(t, result.GetInt64(i), v)
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}
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// enum
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ft = types.NewFieldType(mysql.TypeEnum)
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col.RetType = ft
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input = chunk.New([]*types.FieldType{ft}, 1024, 1024)
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for i := 0; i < 1024; i++ {
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input.AppendEnum(0, types.Enum{Name: fmt.Sprintf("%v", i), Value: uint64(i)})
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}
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result = chunk.NewColumn(types.NewFieldType(mysql.TypeString), 1024)
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require.Nil(t, col.VecEvalString(ctx, input, result))
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it = chunk.NewIterator4Chunk(input)
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for row, i := it.Begin(), 0; row != it.End(); row, i = it.Next(), i+1 {
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v, _, err := col.EvalString(ctx, row)
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require.NoError(t, err)
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require.Equal(t, result.GetString(i), v)
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}
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// set
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ft = types.NewFieldType(mysql.TypeSet)
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col.RetType = ft
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input = chunk.New([]*types.FieldType{ft}, 1024, 1024)
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for i := 0; i < 1024; i++ {
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input.AppendSet(0, types.Set{Name: fmt.Sprintf("%v", i), Value: uint64(i)})
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}
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result = chunk.NewColumn(types.NewFieldType(mysql.TypeString), 1024)
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require.Nil(t, col.VecEvalString(ctx, input, result))
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it = chunk.NewIterator4Chunk(input)
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for row, i := it.Begin(), 0; row != it.End(); row, i = it.Next(), i+1 {
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v, _, err := col.EvalString(ctx, row)
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require.NoError(t, err)
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require.Equal(t, result.GetString(i), v)
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}
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}
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func TestInColumnArray(t *testing.T) {
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// normal case, col is in column array
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col0, col1 := &Column{ID: 0, UniqueID: 0}, &Column{ID: 1, UniqueID: 1}
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cols := []*Column{col0, col1}
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require.True(t, col0.InColumnArray(cols))
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// abnormal case, col is not in column array
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require.False(t, col0.InColumnArray([]*Column{col1}))
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// abnormal case, input is nil
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require.False(t, col0.InColumnArray(nil))
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}
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func TestGcColumnExprIsTidbShard(t *testing.T) {
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ctx := mock.NewContext()
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// abnormal case
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// nil, not tidb_shard
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require.False(t, GcColumnExprIsTidbShard(nil))
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// `a = 1`, not tidb_shard
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ft := types.NewFieldType(mysql.TypeLonglong)
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col := &Column{RetType: ft, Index: 0}
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d1 := types.NewDatum(1)
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con := &Constant{Value: d1, RetType: ft}
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expr := NewFunctionInternal(ctx, ast.EQ, ft, col, con)
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require.False(t, GcColumnExprIsTidbShard(expr))
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// normal case
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// tidb_shard(a) = 1
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shardExpr := NewFunctionInternal(ctx, ast.TiDBShard, ft, col)
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require.True(t, GcColumnExprIsTidbShard(shardExpr))
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}
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