func (s *testIndexChangeSuite) checkDropWriteOnly(d *ddl, ctx context.Context, publicTbl, writeTbl table.Table) error {
// WriteOnlyTable insert t values (8, 8)
_, err := writeTbl.AddRecord(ctx, types.MakeDatums(8, 8))
if err != nil {
return errors.Trace(err)
}
err = checkIndexExists(ctx, publicTbl, 8, 8, true)
if err != nil {
return errors.Trace(err)
}
// WriteOnlyTable update t set c2 = 7 where c1 = 8 and c2 = 8
err = writeTbl.UpdateRecord(ctx, 8, types.MakeDatums(8, 8), types.MakeDatums(8, 7), touchedMap(writeTbl))
if err != nil {
return errors.Trace(err)
}
err = checkIndexExists(ctx, publicTbl, 7, 8, true)
if err != nil {
return errors.Trace(err)
}
// WriteOnlyTable delete t where c1 = 8
err = writeTbl.RemoveRecord(ctx, 8, types.MakeDatums(8, 7))
if err != nil {
return errors.Trace(err)
}
err = checkIndexExists(ctx, publicTbl, 7, 8, false)
if err != nil {
return errors.Trace(err)
}
return nil
}
func (s *testIndexChangeSuite) checkAddPublic(d *ddl, ctx context.Context, writeTbl, publicTbl table.Table) error {
// WriteOnlyTable: insert t values (6, 6)
_, err := writeTbl.AddRecord(ctx, types.MakeDatums(6, 6))
if err != nil {
return errors.Trace(err)
}
err = checkIndexExists(ctx, publicTbl, 6, 6, true)
if err != nil {
return errors.Trace(err)
}
// PublicTable: insert t values (7, 7)
_, err = publicTbl.AddRecord(ctx, types.MakeDatums(7, 7))
if err != nil {
return errors.Trace(err)
}
err = checkIndexExists(ctx, publicTbl, 7, 7, true)
if err != nil {
return errors.Trace(err)
}
// WriteOnlyTable: update t set c2 = 5 where c1 = 7 and c2 = 7
err = writeTbl.UpdateRecord(ctx, 7, types.MakeDatums(7, 7), types.MakeDatums(7, 5), touchedMap(writeTbl))
if err != nil {
return errors.Trace(err)
}
err = checkIndexExists(ctx, publicTbl, 5, 7, true)
if err != nil {
return errors.Trace(err)
}
err = checkIndexExists(ctx, publicTbl, 7, 7, false)
if err != nil {
return errors.Trace(err)
}
// WriteOnlyTable: delete t where c1 = 6
err = writeTbl.RemoveRecord(ctx, 6, types.MakeDatums(6, 6))
if err != nil {
return errors.Trace(err)
}
err = checkIndexExists(ctx, publicTbl, 6, 6, false)
var rows [][]types.Datum
publicTbl.IterRecords(ctx, publicTbl.FirstKey(), publicTbl.Cols(),
func(h int64, data []types.Datum, cols []*table.Column) (bool, error) {
rows = append(rows, data)
return true, nil
})
if len(rows) == 0 {
return errors.New("table is empty")
}
for _, row := range rows {
idxVal := row[1].GetInt64()
handle := row[0].GetInt64()
err = checkIndexExists(ctx, publicTbl, idxVal, handle, true)
if err != nil {
return errors.Trace(err)
}
}
return nil
}
func (e *DeleteExec) removeRow(ctx context.Context, t table.Table, h int64, data []types.Datum) error {
err := t.RemoveRecord(ctx, h, data)
if err != nil {
return errors.Trace(err)
}
variable.GetSessionVars(ctx).AddAffectedRows(1)
return nil
}
func (e *DeleteExec) removeRow(ctx context.Context, t table.Table, h int64, data []types.Datum) error {
err := t.RemoveRecord(ctx, h, data)
if err != nil {
return errors.Trace(err)
}
getDirtyDB(ctx).deleteRow(t.Meta().ID, h)
ctx.GetSessionVars().StmtCtx.AddAffectedRows(1)
return nil
}
func removeRow(ctx context.Context, t table.Table, h int64, data []interface{}) error {
err := t.RemoveRecord(ctx, h, data)
if err != nil {
return errors.Trace(err)
}
variable.GetSessionVars(ctx).AddAffectedRows(1)
return nil
}
func (s *testColumnChangeSuite) checkAddWriteOnly(d *ddl, ctx context.Context, deleteOnlyTable, writeOnlyTable table.Table) error {
// WriteOnlyTable: insert t values (2, 3)
_, err := writeOnlyTable.AddRecord(ctx, types.MakeDatums(2, 3))
if err != nil {
return errors.Trace(err)
}
err = ctx.CommitTxn()
if err != nil {
return errors.Trace(err)
}
err = checkResult(ctx, writeOnlyTable, testutil.RowsWithSep(" ", "1 2 <nil>", "2 3 3"))
if err != nil {
return errors.Trace(err)
}
// DeleteOnlyTable: select * from t
err = checkResult(ctx, deleteOnlyTable, testutil.RowsWithSep(" ", "1 2", "2 3"))
if err != nil {
return errors.Trace(err)
}
// WriteOnlyTable: update t set c1 = 2 where c1 = 1
h, _, err := writeOnlyTable.Seek(ctx, 0)
if err != nil {
return errors.Trace(err)
}
err = writeOnlyTable.UpdateRecord(ctx, h, types.MakeDatums(1, 2), types.MakeDatums(2, 2), touchedMap(writeOnlyTable))
if err != nil {
return errors.Trace(err)
}
err = ctx.CommitTxn()
if err != nil {
return errors.Trace(err)
}
// After we update the first row, its default value is also set.
err = checkResult(ctx, writeOnlyTable, testutil.RowsWithSep(" ", "2 2 3", "2 3 3"))
if err != nil {
return errors.Trace(err)
}
// DeleteOnlyTable: delete from t where c2 = 2
err = deleteOnlyTable.RemoveRecord(ctx, h, types.MakeDatums(2, 2))
if err != nil {
return errors.Trace(err)
}
err = ctx.CommitTxn()
if err != nil {
return errors.Trace(err)
}
// After delete table has deleted the first row, check the WriteOnly table records.
err = checkResult(ctx, writeOnlyTable, testutil.RowsWithSep(" ", "2 3 3"))
return errors.Trace(err)
}
func updateRecord(ctx context.Context, h int64, oldData, newData []types.Datum, assignFlag []bool, t table.Table, offset int, onDuplicateUpdate bool) error {
cols := t.Cols()
touched := make(map[int]bool, len(cols))
assignExists := false
sc := ctx.GetSessionVars().StmtCtx
var newHandle types.Datum
for i, hasSetExpr := range assignFlag {
if !hasSetExpr {
if onDuplicateUpdate {
newData[i] = oldData[i]
}
continue
}
if i < offset || i >= offset+len(cols) {
// The assign expression is for another table, not this.
continue
}
colIndex := i - offset
col := cols[colIndex]
if col.IsPKHandleColumn(t.Meta()) {
newHandle = newData[i]
}
if mysql.HasAutoIncrementFlag(col.Flag) {
if newData[i].IsNull() {
return errors.Errorf("Column '%v' cannot be null", col.Name.O)
}
val, err := newData[i].ToInt64(sc)
if err != nil {
return errors.Trace(err)
}
t.RebaseAutoID(val, true)
}
touched[colIndex] = true
assignExists = true
}
// If no assign list for this table, no need to update.
if !assignExists {
return nil
}
// Check whether new value is valid.
if err := table.CastValues(ctx, newData, cols, false); err != nil {
return errors.Trace(err)
}
if err := table.CheckNotNull(cols, newData); err != nil {
return errors.Trace(err)
}
// If row is not changed, we should do nothing.
rowChanged := false
for i := range oldData {
if !touched[i] {
continue
}
n, err := newData[i].CompareDatum(sc, oldData[i])
if err != nil {
return errors.Trace(err)
}
if n != 0 {
rowChanged = true
break
}
}
if !rowChanged {
// See https://dev.mysql.com/doc/refman/5.7/en/mysql-real-connect.html CLIENT_FOUND_ROWS
if ctx.GetSessionVars().ClientCapability&mysql.ClientFoundRows > 0 {
sc.AddAffectedRows(1)
}
return nil
}
var err error
if !newHandle.IsNull() {
err = t.RemoveRecord(ctx, h, oldData)
if err != nil {
return errors.Trace(err)
}
_, err = t.AddRecord(ctx, newData)
} else {
// Update record to new value and update index.
err = t.UpdateRecord(ctx, h, oldData, newData, touched)
}
if err != nil {
return errors.Trace(err)
}
dirtyDB := getDirtyDB(ctx)
tid := t.Meta().ID
dirtyDB.deleteRow(tid, h)
dirtyDB.addRow(tid, h, newData)
// Record affected rows.
if !onDuplicateUpdate {
sc.AddAffectedRows(1)
} else {
sc.AddAffectedRows(2)
}
return nil
}
func updateRecord(ctx context.Context, h int64, data []interface{}, t table.Table,
updateColumns map[int]*expression.Assignment, evalMap map[interface{}]interface{},
offset int, onDuplicateUpdate bool) error {
if err := t.LockRow(ctx, h); err != nil {
return errors.Trace(err)
}
cols := t.Cols()
oldData := data
newData := make([]interface{}, len(cols))
touched := make(map[int]bool, len(cols))
copy(newData, oldData)
assignExists := false
var newHandle interface{}
for i, asgn := range updateColumns {
if i < offset || i >= offset+len(cols) {
// The assign expression is for another table, not this.
continue
}
val, err := asgn.Expr.Eval(ctx, evalMap)
if err != nil {
return errors.Trace(err)
}
colIndex := i - offset
col := cols[colIndex]
if col.IsPKHandleColumn(t.Meta()) {
newHandle = val
}
touched[colIndex] = true
newData[colIndex] = val
assignExists = true
}
// If no assign list for this table, no need to update.
if !assignExists {
return nil
}
// Check whether new value is valid.
if err := column.CastValues(ctx, newData, cols); err != nil {
return errors.Trace(err)
}
if err := column.CheckNotNull(cols, newData); err != nil {
return errors.Trace(err)
}
// If row is not changed, we should do nothing.
rowChanged := false
for i := range oldData {
if !touched[i] {
continue
}
n, err := types.Compare(newData[i], oldData[i])
if err != nil {
return errors.Trace(err)
}
if n != 0 {
rowChanged = true
break
}
}
if !rowChanged {
// See: https://dev.mysql.com/doc/refman/5.7/en/mysql-real-connect.html CLIENT_FOUND_ROWS
if variable.GetSessionVars(ctx).ClientCapability&mysql.ClientFoundRows > 0 {
variable.GetSessionVars(ctx).AddAffectedRows(1)
}
return nil
}
var err error
if newHandle != nil {
err = t.RemoveRecord(ctx, h, oldData)
if err != nil {
return errors.Trace(err)
}
_, err = t.AddRecord(ctx, newData)
} else {
// Update record to new value and update index.
err = t.UpdateRecord(ctx, h, oldData, newData, touched)
}
if err != nil {
return errors.Trace(err)
}
// Record affected rows.
if !onDuplicateUpdate {
variable.GetSessionVars(ctx).AddAffectedRows(1)
} else {
variable.GetSessionVars(ctx).AddAffectedRows(2)
}
return nil
}
func (s *testIndexChangeSuite) checkAddWriteOnly(d *ddl, ctx context.Context, delOnlyTbl, writeOnlyTbl table.Table) error {
// DeleteOnlyTable: insert t values (4, 4);
_, err := delOnlyTbl.AddRecord(ctx, types.MakeDatums(4, 4))
if err != nil {
return errors.Trace(err)
}
err = checkIndexExists(ctx, writeOnlyTbl, 4, 4, false)
if err != nil {
return errors.Trace(err)
}
// WriteOnlyTable: insert t values (5, 5);
_, err = writeOnlyTbl.AddRecord(ctx, types.MakeDatums(5, 5))
if err != nil {
return errors.Trace(err)
}
err = checkIndexExists(ctx, writeOnlyTbl, 5, 5, true)
if err != nil {
return errors.Trace(err)
}
// WriteOnlyTable: update t set c2 = 1 where c1 = 4 and c2 = 4
err = writeOnlyTbl.UpdateRecord(ctx, 4, types.MakeDatums(4, 4), types.MakeDatums(4, 1), touchedMap(writeOnlyTbl))
if err != nil {
return errors.Trace(err)
}
err = checkIndexExists(ctx, writeOnlyTbl, 1, 4, true)
if err != nil {
return errors.Trace(err)
}
// DeleteOnlyTable: update t set c2 = 3 where c1 = 4 and c2 = 1
err = delOnlyTbl.UpdateRecord(ctx, 4, types.MakeDatums(4, 1), types.MakeDatums(4, 3), touchedMap(writeOnlyTbl))
if err != nil {
return errors.Trace(err)
}
// old value index not exists.
err = checkIndexExists(ctx, writeOnlyTbl, 1, 4, false)
if err != nil {
return errors.Trace(err)
}
// new value index not exists.
err = checkIndexExists(ctx, writeOnlyTbl, 3, 4, false)
if err != nil {
return errors.Trace(err)
}
// WriteOnlyTable: delete t where c1 = 4 and c2 = 3
err = writeOnlyTbl.RemoveRecord(ctx, 4, types.MakeDatums(4, 3))
if err != nil {
return errors.Trace(err)
}
err = checkIndexExists(ctx, writeOnlyTbl, 3, 4, false)
if err != nil {
return errors.Trace(err)
}
// DeleteOnlyTable: delete t where c1 = 5
err = delOnlyTbl.RemoveRecord(ctx, 5, types.MakeDatums(5, 5))
if err != nil {
return errors.Trace(err)
}
err = checkIndexExists(ctx, writeOnlyTbl, 5, 5, false)
if err != nil {
return errors.Trace(err)
}
return nil
}