forked from pressly/goose
/
dialect.go
220 lines (184 loc) · 6.1 KB
/
dialect.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
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
package goose
import (
"database/sql"
"fmt"
)
// SQLDialect abstracts the details of specific SQL dialects
// for goose's few SQL specific statements
type SQLDialect interface {
createVersionTableSQL() string // sql string to create the db version table
insertVersionSQL() string // sql string to insert the initial version table row
dbVersionQuery(db *sql.DB) (*sql.Rows, error)
}
var dialect SQLDialect = &PostgresDialect{}
// GetDialect gets the SQLDialect
func GetDialect() SQLDialect {
return dialect
}
// SetDialect sets the SQLDialect
func SetDialect(d string) error {
switch d {
case "postgres":
dialect = &PostgresDialect{}
case "mysql":
dialect = &MySQLDialect{}
case "sqlite3":
dialect = &Sqlite3Dialect{}
case "redshift":
dialect = &RedshiftDialect{}
case "tidb":
dialect = &TiDBDialect{}
default:
return fmt.Errorf("%q: unknown dialect", d)
}
return nil
}
////////////////////////////
// Postgres
////////////////////////////
// PostgresDialect struct.
type PostgresDialect struct{}
func (pg PostgresDialect) createVersionTableSQL() string {
return fmt.Sprintf(`CREATE TABLE %s (
id serial NOT NULL,
version_id bigint NOT NULL,
filename text NULL default NULL,
note text NULL default NULL,
is_applied boolean NOT NULL,
tstamp timestamp NULL default now(),
sqldata text NULL default NULL,
PRIMARY KEY(id)
);`, TableName())
}
func (pg PostgresDialect) insertVersionSQL() string {
return fmt.Sprintf(`INSERT INTO %s
(version_id, filename, note, is_applied, sqldata)
VALUES ($1, $2, $3, $4, $5);`, TableName())
}
func (pg PostgresDialect) dbVersionQuery(db *sql.DB) (*sql.Rows, error) {
rows, err := db.Query(fmt.Sprintf(`SELECT version_id, filename, note, is_applied
FROM %s ORDER BY version_id DESC, id DESC`, TableName()))
if err != nil {
return nil, err
}
return rows, err
}
////////////////////////////
// MySQL
////////////////////////////
// MySQLDialect struct.
type MySQLDialect struct{}
func (m MySQLDialect) createVersionTableSQL() string {
return fmt.Sprintf(`CREATE TABLE %s (
id serial NOT NULL,
version_id bigint NOT NULL,
filename text NULL default NULL,
note text NULL default NULL,
is_applied boolean NOT NULL,
tstamp timestamp NULL default now(),
sqldata text NULL default NULL,
PRIMARY KEY(id)
);`, TableName())
}
func (m MySQLDialect) insertVersionSQL() string {
return fmt.Sprintf(`INSERT INTO %s
(version_id, filename, note, is_applied, sqldata)
VALUES (?, ?, ?, ?, ?);`, TableName())
}
func (m MySQLDialect) dbVersionQuery(db *sql.DB) (*sql.Rows, error) {
rows, err := db.Query(fmt.Sprintf(`SELECT version_id, filename, note, is_applied
FROM %s ORDER BY version_id DESC, id DESC`, TableName()))
if err != nil {
return nil, err
}
return rows, err
}
////////////////////////////
// sqlite3
////////////////////////////
// Sqlite3Dialect struct.
type Sqlite3Dialect struct{}
func (m Sqlite3Dialect) createVersionTableSQL() string {
return fmt.Sprintf(`CREATE TABLE %s (
id INTEGER PRIMARY KEY AUTOINCREMENT,
version_id INTEGER NOT NULL,
filename TEXT NULL default NULL,
note TEXT NULL default NULL,
is_applied INTEGER NOT NULL,
tstamp TIMESTAMP DEFAULT (datetime('now')),
sqldata text NULL default NULL,
);`, TableName())
}
func (m Sqlite3Dialect) insertVersionSQL() string {
return fmt.Sprintf(`INSERT INTO %s
(version_id, filename, note, is_applied, sqldata)
VALUES (?, ?, ?, ?, ?);`, TableName())
}
func (m Sqlite3Dialect) dbVersionQuery(db *sql.DB) (*sql.Rows, error) {
rows, err := db.Query(fmt.Sprintf(`SELECT version_id, filename, note, is_applied
FROM %s ORDER BY version_id DESC, id DESC`, TableName()))
if err != nil {
return nil, err
}
return rows, err
}
////////////////////////////
// Redshift
////////////////////////////
// RedshiftDialect struct.
type RedshiftDialect struct{}
func (rs RedshiftDialect) createVersionTableSQL() string {
return fmt.Sprintf(`CREATE TABLE %s (
id integer NOT NULL identity(1, 1),
version_id bigint NOT NULL,
filename text NULL default NULL,
note text NULL default NULL,
is_applied boolean NOT NULL,
tstamp timestamp NULL default sysdate,
sqldata text NULL default NULL,
PRIMARY KEY(id)
);`, TableName())
}
func (rs RedshiftDialect) insertVersionSQL() string {
return fmt.Sprintf(`INSERT INTO %s
(version_id, filename, note, is_applied, sqldata)
VALUES ($1, $2, $3, $4, $5);`, TableName())
}
func (rs RedshiftDialect) dbVersionQuery(db *sql.DB) (*sql.Rows, error) {
rows, err := db.Query(fmt.Sprintf(`SELECT version_id, filename, note, is_applied
FROM %s ORDER BY version_id DESC, id DESC`, TableName()))
if err != nil {
return nil, err
}
return rows, err
}
////////////////////////////
// TiDB
////////////////////////////
// TiDBDialect struct.
type TiDBDialect struct{}
func (m TiDBDialect) createVersionTableSQL() string {
return fmt.Sprintf(`CREATE TABLE %s (
id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT UNIQUE,
version_id bigint NOT NULL,
filename text NULL default NULL,
note text NULL default NULL,
is_applied boolean NOT NULL,
tstamp timestamp NULL default now(),
sqldata text NULL default NULL,
PRIMARY KEY(id)
);`, TableName())
}
func (m TiDBDialect) insertVersionSQL() string {
return fmt.Sprintf(`INSERT INTO %s
(version_id, filename, note, is_applied, sqldata)
VALUES (?, ?, ?, ?, ?);`, TableName())
}
func (m TiDBDialect) dbVersionQuery(db *sql.DB) (*sql.Rows, error) {
rows, err := db.Query(fmt.Sprintf(`SELECT version_id, filename, note, is_applied
FROM %s ORDER BY version_id DESC, id DESC`, TableName()))
if err != nil {
return nil, err
}
return rows, err
}