66 lines
2.0 KiB
Go
66 lines
2.0 KiB
Go
// Copyright 2013 The ql Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSES/QL-LICENSE file.
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// Copyright 2015 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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// See the License for the specific language governing permissions and
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// limitations under the License.
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package stmts
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import (
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"github.com/pingcap/tidb/context"
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"github.com/pingcap/tidb/ddl"
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"github.com/pingcap/tidb/rset"
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"github.com/pingcap/tidb/sessionctx"
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"github.com/pingcap/tidb/stmt"
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"github.com/pingcap/tidb/table"
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"github.com/pingcap/tidb/util/format"
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)
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var _ stmt.Statement = (*AlterTableStmt)(nil)
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// AlterTableStmt is a statement to change the structure of a table.
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// See: https://dev.mysql.com/doc/refman/5.7/en/alter-table.html
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type AlterTableStmt struct {
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Ident table.Ident
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Specs []*ddl.AlterSpecification
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Text string
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}
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// Explain implements the stmt.Statement Explain interface.
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func (s *AlterTableStmt) Explain(ctx context.Context, w format.Formatter) {
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w.Format("%s\n", s.Text)
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}
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// IsDDL implements the stmt.Statement IsDDL interface.
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func (s *AlterTableStmt) IsDDL() bool {
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return true
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}
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// OriginText implements the stmt.Statement OriginText interface.
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func (s *AlterTableStmt) OriginText() string {
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return s.Text
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}
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// SetText implements the stmt.Statement SetText interface.
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func (s *AlterTableStmt) SetText(text string) {
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s.Text = text
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}
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// Exec implements the stmt.Statement Exec interface.
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func (s *AlterTableStmt) Exec(ctx context.Context) (_ rset.Recordset, err error) {
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err = sessionctx.GetDomain(ctx).DDL().AlterTable(ctx, s.Ident.Full(ctx), s.Specs)
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return nil, err
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}
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