forked from cockroachdb/cockroach
/
rename.go
92 lines (81 loc) · 2.39 KB
/
rename.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
// Copyright 2014 The Cockroach Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied. See the License for the specific language governing
// permissions and limitations under the License. See the AUTHORS file
// for names of contributors.
//
// Author: Peter Mattis (peter@cockroachlabs.com)
// This code was derived from https://github.com/youtube/vitess.
//
// Copyright 2012, Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file
package parser
import (
"bytes"
"fmt"
)
// RenameDatabase represents a RENAME DATABASE statement.
type RenameDatabase struct {
Name Name
NewName Name
}
func (node *RenameDatabase) String() string {
return fmt.Sprintf("ALTER DATABASE %s RENAME TO %s", node.Name, node.NewName)
}
// RenameTable represents a RENAME TABLE statement.
type RenameTable struct {
Name *QualifiedName
NewName *QualifiedName
IfExists bool
}
func (node *RenameTable) String() string {
var buf bytes.Buffer
buf.WriteString("ALTER TABLE ")
if node.IfExists {
buf.WriteString("IF EXISTS ")
}
fmt.Fprintf(&buf, "%s RENAME TO %s", node.Name, node.NewName)
return buf.String()
}
// RenameIndex represents a RENAME INDEX statement.
type RenameIndex struct {
Name *QualifiedName
NewName Name
IfExists bool
}
func (node *RenameIndex) String() string {
var buf bytes.Buffer
buf.WriteString("ALTER INDEX ")
if node.IfExists {
buf.WriteString("IF EXISTS ")
}
fmt.Fprintf(&buf, "%s RENAME TO %s", node.Name, node.NewName)
return buf.String()
}
// RenameColumn represents a RENAME COLUMN statement.
type RenameColumn struct {
Table *QualifiedName
Name Name
NewName Name
// IfExists refers to the table, not the column.
IfExists bool
}
func (node *RenameColumn) String() string {
var buf bytes.Buffer
buf.WriteString("ALTER TABLE ")
if node.IfExists {
buf.WriteString("IF EXISTS ")
}
fmt.Fprintf(&buf, "%s RENAME COLUMN %s TO %s", node.Table, node.Name, node.NewName)
return buf.String()
}