Golang Table.AddRecord方法代碼示例

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 *testColumnChangeSuite) checkAddPublic(d *ddl, ctx context.Context, writeOnlyTable, publicTable table.Table) error {
	// publicTable Insert t values (4, 4, 4)
	h, err := publicTable.AddRecord(ctx, types.MakeDatums(4, 4, 4))
	if err != nil {
		return errors.Trace(err)
	}
	err = ctx.CommitTxn()
	if err != nil {
		return errors.Trace(err)
	}
	// writeOnlyTable update t set c1 = 3 where c1 = 4
	oldRow, err := writeOnlyTable.RowWithCols(ctx, h, writeOnlyTable.WritableCols())
	if err != nil {
		return errors.Trace(err)
	}
	if len(oldRow) != 3 {
		return errors.Errorf("%v", oldRow)
	}
	newRow := types.MakeDatums(3, 4, oldRow[2].GetValue())
	err = writeOnlyTable.UpdateRecord(ctx, h, oldRow, newRow, touchedMap(writeOnlyTable))
	if err != nil {
		return errors.Trace(err)
	}
	err = ctx.CommitTxn()
	if err != nil {
		return errors.Trace(err)
	}
	// publicTable select * from t, make sure the new c3 value 4 is not overwritten to default value 3.
	err = checkResult(ctx, publicTable, testutil.RowsWithSep(" ", "2 3 3", "3 4 4"))
	if err != nil {
		return errors.Trace(err)
	}
	return nil
}

func (s *testIndexChangeSuite) checkDropDeleteOnly(d *ddl, ctx context.Context, writeTbl, delTbl table.Table) error {
	// WriteOnlyTable insert t values (9, 9)
	_, err := writeTbl.AddRecord(ctx, types.MakeDatums(9, 9))
	if err != nil {
		return errors.Trace(err)
	}
	err = checkIndexExists(ctx, writeTbl, 9, 9, true)
	// DeleteOnlyTable insert t values (10, 10)
	_, err = delTbl.AddRecord(ctx, types.MakeDatums(10, 10))
	if err != nil {
		return errors.Trace(err)
	}
	err = checkIndexExists(ctx, writeTbl, 10, 10, false)
	if err != nil {
		return errors.Trace(err)
	}
	// DeleteOnlyTable update t set c2 = 10 where c1 = 9
	err = delTbl.UpdateRecord(ctx, 9, types.MakeDatums(9, 9), types.MakeDatums(9, 10), touchedMap(delTbl))
	if err != nil {
		return errors.Trace(err)
	}
	err = checkIndexExists(ctx, writeTbl, 9, 9, false)
	if err != nil {
		return errors.Trace(err)
	}
	err = checkIndexExists(ctx, writeTbl, 10, 9, 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
}

// execExecSelect implements `insert table select ... from ...`.
func (s *InsertValues) execSelect(t table.Table, cols []*column.Col, ctx context.Context) (rset.Recordset, error) {
	r, err := s.Sel.Plan(ctx)
	if err != nil {
		return nil, errors.Trace(err)
	}
	defer r.Close()
	if len(r.GetFields()) != len(cols) {
		return nil, errors.Errorf("Column count %d doesn't match value count %d", len(cols), len(r.GetFields()))
	}

	var bufRecords [][]interface{}
	var lastInsertIds []uint64
	for {
		var row *plan.Row
		row, err = r.Next(ctx)
		if err != nil {
			return nil, errors.Trace(err)
		}
		if row == nil {
			break
		}
		data0 := make([]interface{}, len(t.Cols()))
		marked := make(map[int]struct{}, len(cols))
		for i, d := range row.Data {
			data0[cols[i].Offset] = d
			marked[cols[i].Offset] = struct{}{}
		}

		if err = s.initDefaultValues(ctx, t, data0, marked); err != nil {
			return nil, errors.Trace(err)
		}

		if err = column.CastValues(ctx, data0, cols); err != nil {
			return nil, errors.Trace(err)
		}

		if err = column.CheckNotNull(t.Cols(), data0); err != nil {
			return nil, errors.Trace(err)
		}
		var v interface{}
		v, err = types.Clone(data0)
		if err != nil {
			return nil, errors.Trace(err)
		}

		bufRecords = append(bufRecords, v.([]interface{}))
		lastInsertIds = append(lastInsertIds, variable.GetSessionVars(ctx).LastInsertID)
	}

	for i, r := range bufRecords {
		variable.GetSessionVars(ctx).SetLastInsertID(lastInsertIds[i])
		if _, err = t.AddRecord(ctx, r); err != nil {
			return nil, errors.Trace(err)
		}
	}
	return nil, nil
}

func insertData(tbl table.Table, rows [][]types.Datum) error {
	for _, r := range rows {
		_, err := tbl.AddRecord(nil, r)
		if err != nil {
			return errors.Trace(err)
		}
	}
	return nil
}

// execExecSelect implements `insert table select ... from ...`.
func (s *InsertIntoStmt) execSelect(t table.Table, cols []*column.Col, ctx context.Context) (_ rset.Recordset, err error) {
	r, err := s.Sel.Plan(ctx)
	if err != nil {
		return nil, errors.Trace(err)
	} else if len(r.GetFields()) != len(cols) {
		return nil, errors.Errorf("Column count %d doesn't match value count %d", len(cols), len(r.GetFields()))
	}

	var bufRecords [][]interface{}
	var lastInsertIds []uint64
	err = r.Do(ctx, func(_ interface{}, data []interface{}) (more bool, err error) {
		data0 := make([]interface{}, len(t.Cols()))
		marked := make(map[int]struct{}, len(cols))
		for i, d := range data {
			data0[cols[i].Offset] = d
			marked[cols[i].Offset] = struct{}{}
		}

		if err = s.initDefaultValues(ctx, t, t.Cols(), data0, marked); err != nil {
			return false, errors.Trace(err)
		}

		if err = column.CastValues(ctx, data0, cols); err != nil {
			return false, errors.Trace(err)
		}

		if err = column.CheckNotNull(t.Cols(), data0); err != nil {
			return false, errors.Trace(err)
		}

		v, err := types.Clone(data0)
		if err != nil {
			return false, errors.Trace(err)
		}

		bufRecords = append(bufRecords, v.([]interface{}))
		lastInsertIds = append(lastInsertIds, variable.GetSessionVars(ctx).LastInsertID)
		return true, nil
	})
	if err != nil {
		return nil, errors.Trace(err)
	}

	for i, r := range bufRecords {
		variable.GetSessionVars(ctx).SetLastInsertID(lastInsertIds[i])

		if _, err = t.AddRecord(ctx, r); err != nil {
			return nil, errors.Trace(err)
		}
	}

	return nil, 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 (s *testColumnChangeSuite) testAddColumnNoDefault(c *C, ctx context.Context, d *ddl, tblInfo *model.TableInfo) {
	d.close()
	tc := &testDDLCallback{}
	// set up hook
	prevState := model.StateNone
	var checkErr error
	var writeOnlyTable, publicTable table.Table
	tc.onJobUpdated = func(job *model.Job) {
		if job.SchemaState == prevState {
			return
		}
		prevState = job.SchemaState
		var err error
		switch job.SchemaState {
		case model.StateWriteOnly:
			writeOnlyTable, err = getCurrentTable(d, s.dbInfo.ID, tblInfo.ID)
			if err != nil {
				checkErr = errors.Trace(err)
			}
		case model.StatePublic:
			publicTable, err = getCurrentTable(d, s.dbInfo.ID, tblInfo.ID)
			if err != nil {
				checkErr = errors.Trace(err)
			}
			_, err = writeOnlyTable.AddRecord(ctx, types.MakeDatums(10, 10))
			if err != nil {
				checkErr = errors.Trace(err)
			}
		}
	}
	d.hook = tc
	d.start()
	job := testCreateColumn(c, ctx, d, s.dbInfo, tblInfo, "c3", &ast.ColumnPosition{Tp: ast.ColumnPositionNone}, nil)
	c.Assert(errors.ErrorStack(checkErr), Equals, "")
	testCheckJobDone(c, d, job, true)
}

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)
//.........這裏部分代碼省略.........

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
//.........這裏部分代碼省略.........

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
}