GV

GeezerVison

The World Wide Web, restored to 800 pixels of glory.

Home|About|Gaming cabinet|Archives|How it works|Starter sites

On this site

  • Sign in
  • ActionsCI/CD and automation
  • CodespacesCloud development environments
  • All Features
  • Documentation
  • Training
  • Certifications
  • Build with Copilot
  • Customize Copilot
  • Integrations
  • Trending repos
  • GitHub Sponsors
  • Developer articles
  • Enterprises

This view

  • Original page
  • New address

GeezerVison is showing github.com — sqlparser/encodable.go at master · lntoly/sqlparser

Expand file tree

/

encodable.go

Copy path
More file actions
More file actions

Latest commit

 

History

History
History
99 lines (85 loc) · 2.25 KB
/

encodable.go

Copy path

File metadata and controls

99 lines (85 loc) · 2.25 KB
Raw
Copy raw file
Download raw file
Open symbols panel
Edit and raw actions
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
93
94
95
96
97
98
99
/*
Copyright 2017 Google Inc.
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.
*/
package sqlparser
import (
"bytes"
"github.com/xwb1989/sqlparser/dependency/sqltypes"
)
// This file contains types that are 'Encodable'.
// Encodable defines the interface for types that can
// be custom-encoded into SQL.
type Encodable interface {
EncodeSQL(buf *bytes.Buffer)
}
// InsertValues is a custom SQL encoder for the values of
// an insert statement.
type InsertValues [][]sqltypes.Value
// EncodeSQL performs the SQL encoding for InsertValues.
func (iv InsertValues) EncodeSQL(buf *bytes.Buffer) {
for i, rows := range iv {
if i != 0 {
buf.WriteString(", ")
}
buf.WriteByte('(')
for j, bv := range rows {
if j != 0 {
buf.WriteString(", ")
}
bv.EncodeSQL(buf)
}
buf.WriteByte(')')
}
}
// TupleEqualityList is for generating equality constraints
// for tables that have composite primary keys.
type TupleEqualityList struct {
Columns []ColIdent
Rows [][]sqltypes.Value
}
// EncodeSQL generates the where clause constraints for the tuple
// equality.
func (tpl *TupleEqualityList) EncodeSQL(buf *bytes.Buffer) {
if len(tpl.Columns) == 1 {
tpl.encodeAsIn(buf)
return
}
tpl.encodeAsEquality(buf)
}
func (tpl *TupleEqualityList) encodeAsIn(buf *bytes.Buffer) {
Append(buf, tpl.Columns[0])
buf.WriteString(" in (")
for i, r := range tpl.Rows {
if i != 0 {
buf.WriteString(", ")
}
r[0].EncodeSQL(buf)
}
buf.WriteByte(')')
}
func (tpl *TupleEqualityList) encodeAsEquality(buf *bytes.Buffer) {
for i, r := range tpl.Rows {
if i != 0 {
buf.WriteString(" or ")
}
buf.WriteString("(")
for j, c := range tpl.Columns {
if j != 0 {
buf.WriteString(" and ")
}
Append(buf, c)
buf.WriteString(" = ")
r[j].EncodeSQL(buf)
}
buf.WriteByte(')')
}
}
You are visitor 01402520 — GeezerVison does not store the pages you look up.
Best viewed with Netscape Navigator 4.7 or Internet Explorer 6 at 800×600. No cookies required.