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Add test for aggregation index join (#86)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,251 @@ | ||
| package sqlgenerator | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "math/rand" | ||
| ) | ||
|
|
||
| type JoinColumn struct { | ||
| outerTable *Table | ||
| innerTable *Table | ||
| outerColumns []*Column | ||
| innerColumns []*Column | ||
| } | ||
|
|
||
| var allJoinColumns map[*State][]*JoinColumn | ||
|
|
||
| func init() { | ||
| allJoinColumns = make(map[*State][]*JoinColumn) | ||
| } | ||
|
|
||
| var indexJoinType = map[ColumnType][]ColumnType{ | ||
| ColumnTypeBoolean: { | ||
| ColumnTypeBoolean, ColumnTypeTinyInt, ColumnTypeSmallInt, ColumnTypeMediumInt, ColumnTypeInt, | ||
| ColumnTypeBigInt, ColumnTypeDouble, ColumnTypeDecimal, ColumnTypeYear, ColumnTypeBit}, | ||
| ColumnTypeTinyInt: { | ||
| ColumnTypeBoolean, ColumnTypeTinyInt, ColumnTypeSmallInt, ColumnTypeMediumInt, ColumnTypeInt, | ||
| ColumnTypeBigInt, ColumnTypeDouble, ColumnTypeDecimal, ColumnTypeYear, ColumnTypeBit}, | ||
| ColumnTypeSmallInt: { | ||
| ColumnTypeBoolean, ColumnTypeTinyInt, ColumnTypeSmallInt, ColumnTypeMediumInt, ColumnTypeInt, | ||
| ColumnTypeBigInt, ColumnTypeFloat, ColumnTypeDouble, ColumnTypeDecimal, ColumnTypeYear, ColumnTypeBit}, | ||
| ColumnTypeMediumInt: { | ||
| ColumnTypeBoolean, ColumnTypeTinyInt, ColumnTypeSmallInt, ColumnTypeMediumInt, ColumnTypeInt, | ||
| ColumnTypeBigInt, ColumnTypeFloat, ColumnTypeDouble, ColumnTypeDecimal, ColumnTypeYear, ColumnTypeBit}, | ||
| ColumnTypeInt: { | ||
| ColumnTypeBoolean, ColumnTypeTinyInt, ColumnTypeSmallInt, ColumnTypeMediumInt, ColumnTypeInt, | ||
| ColumnTypeBigInt, ColumnTypeFloat, ColumnTypeDouble, ColumnTypeDecimal, ColumnTypeYear, ColumnTypeBit}, | ||
| ColumnTypeBigInt: { | ||
| ColumnTypeBoolean, ColumnTypeTinyInt, ColumnTypeSmallInt, ColumnTypeMediumInt, ColumnTypeInt, | ||
| ColumnTypeBigInt, ColumnTypeFloat, ColumnTypeDouble, ColumnTypeDecimal, ColumnTypeYear, ColumnTypeBit}, | ||
| ColumnTypeFloat: {ColumnTypeFloat, ColumnTypeDouble}, | ||
| ColumnTypeDouble: {ColumnTypeFloat, ColumnTypeDouble}, | ||
| ColumnTypeDecimal: {ColumnTypeFloat, ColumnTypeDouble, ColumnTypeDecimal}, | ||
| ColumnTypeChar: { | ||
| ColumnTypeFloat, ColumnTypeDouble, ColumnTypeChar, ColumnTypeVarchar, | ||
| ColumnTypeDate, ColumnTypeDatetime, ColumnTypeTimestamp}, | ||
| ColumnTypeVarchar: { | ||
| ColumnTypeFloat, ColumnTypeDouble, ColumnTypeChar, ColumnTypeVarchar, | ||
| ColumnTypeDate, ColumnTypeDatetime, ColumnTypeTimestamp}, | ||
| ColumnTypeDate: {ColumnTypeFloat, ColumnTypeDouble, ColumnTypeDate, ColumnTypeDatetime, ColumnTypeTimestamp}, | ||
| ColumnTypeTime: { | ||
| ColumnTypeFloat, ColumnTypeDouble, ColumnTypeChar, ColumnTypeVarchar, | ||
| ColumnTypeDate, ColumnTypeTime, ColumnTypeDatetime, ColumnTypeTimestamp}, | ||
| ColumnTypeDatetime: {ColumnTypeFloat, ColumnTypeDouble, ColumnTypeDate, ColumnTypeDatetime, ColumnTypeTimestamp}, | ||
| ColumnTypeTimestamp: {ColumnTypeFloat, ColumnTypeDouble, ColumnTypeDate, ColumnTypeDatetime, ColumnTypeTimestamp}, | ||
| ColumnTypeYear: { | ||
| ColumnTypeBoolean, ColumnTypeTinyInt, ColumnTypeSmallInt, ColumnTypeMediumInt, ColumnTypeInt, | ||
| ColumnTypeBigInt, ColumnTypeFloat, ColumnTypeDouble, ColumnTypeDecimal, ColumnTypeDate, | ||
| ColumnTypeDatetime, ColumnTypeTimestamp, ColumnTypeYear, ColumnTypeBit}, | ||
| ColumnTypeBit: { | ||
| ColumnTypeBoolean, ColumnTypeTinyInt, ColumnTypeSmallInt, ColumnTypeMediumInt, ColumnTypeInt, | ||
| ColumnTypeBigInt, ColumnTypeFloat, ColumnTypeDouble, ColumnTypeDecimal, ColumnTypeYear, ColumnTypeBit}, | ||
| } | ||
|
|
||
| func PrepareIndexJoinColumns(s *State) { | ||
| var CheckFunc = func(left, right ColumnType) bool { | ||
| if matches, ok := indexJoinType[left]; ok { | ||
| for _, match := range matches { | ||
| if right == match { | ||
| return true | ||
| } | ||
| } | ||
| } | ||
| return false | ||
| } | ||
|
|
||
| joinColumns := make([]*JoinColumn, 0) | ||
|
|
||
| // Enumerate possible join columns | ||
| for i := 0; i < len(s.Tables); i++ { | ||
| for j := 0; j < len(s.Tables); j++ { | ||
| outerTable := s.Tables[i] | ||
| innerTable := s.Tables[j] | ||
|
|
||
| var comb = JoinColumn{ | ||
| outerTable: outerTable, | ||
| innerTable: innerTable, | ||
| outerColumns: make([]*Column, 0), | ||
| innerColumns: make([]*Column, 0), | ||
| } | ||
|
|
||
| for _, outerCol := range outerTable.Columns { | ||
| for _, innerIndex := range innerTable.Indexes { | ||
| if CheckFunc(outerCol.Tp, innerIndex.Columns[0].Tp) { | ||
| comb.outerColumns = append(comb.outerColumns, outerCol) | ||
| comb.innerColumns = append(comb.innerColumns, innerIndex.Columns[0]) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| if len(comb.innerColumns) > 0 { | ||
| joinColumns = append(joinColumns, &comb) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| allJoinColumns[s] = joinColumns | ||
| } | ||
|
|
||
| func RandJoinColumn(s *State) (*Table, *Table, *Column, *Column) { | ||
| joinColumns := allJoinColumns[s] | ||
|
|
||
| totalNum := 0 | ||
| for _, joinColumn := range joinColumns { | ||
| totalNum += len(joinColumn.innerColumns) | ||
| } | ||
|
|
||
| if totalNum == 0 { | ||
| return nil, nil, nil, nil | ||
| } | ||
|
|
||
| idx := rand.Intn(totalNum) | ||
| for _, joinColumn := range joinColumns { | ||
| if idx < len(joinColumn.innerColumns) { | ||
| return joinColumn.outerTable, joinColumn.innerTable, | ||
| joinColumn.outerColumns[idx], joinColumn.innerColumns[idx] | ||
| } | ||
| idx -= len(joinColumn.innerColumns) | ||
| } | ||
|
|
||
| return nil, nil, nil, nil | ||
| } | ||
|
|
||
| var MultiSelectWithIndexJoin = NewFn(func(state *State) Fn { | ||
| tbl1, tbl2, col1, col2 := RandJoinColumn(state) | ||
| if tbl1 == nil { | ||
| return NoneBecauseOf(fmt.Errorf("not initialized")) | ||
| } | ||
|
|
||
| // Generate subquery | ||
| state.IncSubQueryDeep() | ||
| st := state.GenSubQuery() | ||
| state.env.QState = &QueryState{ | ||
| SelectedCols: map[*Table]QueryStateColumns{ | ||
| tbl2: { | ||
| Columns: tbl2.Columns, | ||
| Attr: make([]string, len(tbl2.Columns)), | ||
| }, | ||
| }, | ||
| AggCols: make(map[*Table]Columns), | ||
| } | ||
| state.env.QState.SelectedCols[tbl2].Attr[col2.Idx] = ChosenSelection | ||
|
|
||
| def, err := SimpleAggSelect.Eval(state) | ||
| if err != nil { | ||
| return NoneBecauseOf(err) | ||
| } | ||
| var cts []ColumnType | ||
| cts, err = getTypeOfExpressions(def, "test", state.tableMeta) | ||
| if err != nil { | ||
| return NoneBecauseOf(err) | ||
| } | ||
| for _, t := range cts { | ||
| st.AppendColumn(state.GenNewColumnWithType(t)) | ||
| } | ||
| // Reset column name | ||
| for i, c := range st.Columns { | ||
| c.Name = fmt.Sprintf("r%d", i) | ||
| } | ||
| state.PushSubQuery(st) | ||
|
|
||
| tbl2Str := fmt.Sprintf("(%s) %s", def, st.Name) | ||
| sq := state.PopSubQuery() | ||
| sq[0].SubQueryDef = tbl2Str | ||
| state.env.QState = &QueryState{ | ||
| SelectedCols: map[*Table]QueryStateColumns{ | ||
| tbl1: { | ||
| Columns: tbl1.Columns, | ||
| Attr: make([]string, len(tbl1.Columns)), | ||
| }, | ||
| sq[0]: { | ||
| Columns: sq[0].Columns, | ||
| Attr: make([]string, len(sq[0].Columns)), | ||
| }, | ||
| }, | ||
| AggCols: make(map[*Table]Columns), | ||
| } | ||
|
|
||
| joinHint := Str(fmt.Sprintf("/*+ inl_join(%s) */", sq[0].Name)) | ||
| joinPredicate := Str( | ||
| fmt.Sprintf("on %s.%s = %s.%s", | ||
| tbl1.Name, col1.Name, st.Name, sq[0].Columns[0].Name)) | ||
|
|
||
| tblNames := []Fn{Str(tbl1.Name), Str(tbl2Str)} | ||
| join := Join(tblNames, Or(Str("left join"), Str("inner join"))) | ||
|
|
||
| return And( | ||
| Str("select"), joinHint, SelectFields, | ||
| Str("from"), join, joinPredicate, Opt(OrderBy), Opt(Limit), | ||
| ) | ||
| }) | ||
|
|
||
| var SimpleAggSelect = NewFn(func(state *State) Fn { | ||
| state.env.QState.IsAgg = true | ||
| tbl := state.env.QState.GetRandTable() | ||
|
|
||
| groupByColsCnt := rand.Intn(3) | ||
| groupByCols := tbl.Columns.RandGiveN(groupByColsCnt) | ||
| for i, attr := range state.env.QState.SelectedCols[tbl].Attr { | ||
| if attr == ChosenSelection { | ||
| groupByCols = append([]*Column{tbl.Columns[i]}, groupByCols...) | ||
| } | ||
| } | ||
| state.env.QState.AggCols[tbl] = groupByCols | ||
|
|
||
| return And( | ||
| Str("select"), Opt(HintAggToCop), SimpleSelectFields, Str("from"), | ||
| TableReference, WhereClause, GroupByColumns, | ||
| ) | ||
| }) | ||
|
|
||
| var SimpleSelectFields = NewFn(func(state *State) Fn { | ||
| queryState := state.env.QState | ||
| queryState.FieldNumHint = 2 + rand.Intn(4) | ||
|
|
||
| tbl := queryState.GetRandTable() | ||
|
|
||
| var fns []Fn | ||
|
|
||
| // We need at least one column for join and one aggregation function | ||
| fns = append(fns, NewFn(func(state *State) Fn { | ||
| state.env.Table = tbl | ||
| return Str(fmt.Sprintf("%s.%s as r0", tbl.Name, state.env.QState.AggCols[tbl][0].Name)) | ||
| })) | ||
| fns = append(fns, Str(",")) | ||
| fns = append(fns, NewFn(func(state *State) Fn { | ||
| state.env.Table = tbl | ||
| state.env.QColumns = queryState.SelectedCols[state.env.Table] | ||
| return And(AggFunction, Str("as r1")) | ||
| })) | ||
|
|
||
| for i := 2; i < queryState.FieldNumHint; i++ { | ||
| fieldID := fmt.Sprintf("r%d", i) | ||
| fns = append(fns, Str(",")) | ||
| fns = append(fns, NewFn(func(state *State) Fn { | ||
| state.env.Table = tbl | ||
| state.env.QColumns = queryState.SelectedCols[state.env.Table] | ||
| return And(Or(SelectFieldName, AggFunction), Str("as"), Str(fieldID)) | ||
| })) | ||
| } | ||
| return And(fns...) | ||
| }) |
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