forked from beego/beego
-
Notifications
You must be signed in to change notification settings - Fork 0
/
qb_postgres.go
219 lines (187 loc) · 5.4 KB
/
qb_postgres.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
package orm
import (
"fmt"
"strconv"
"strings"
)
var quote string = `"`
// PostgresQueryBuilder is the SQL build
type PostgresQueryBuilder struct {
tokens []string
}
func processingStr(str []string) string {
s := strings.Join(str, `","`)
s = fmt.Sprintf("%s%s%s", quote, s, quote)
return s
}
// Select will join the fields
func (qb *PostgresQueryBuilder) Select(fields ...string) QueryBuilder {
var str string
n := len(fields)
if fields[0] == "*" {
str = "*"
} else {
for i := 0; i < n; i++ {
sli := strings.Split(fields[i], ".")
s := strings.Join(sli, `"."`)
s = fmt.Sprintf("%s%s%s", quote, s, quote)
if n == 1 || i == n-1 {
str += s
} else {
str += s + ","
}
}
}
qb.tokens = append(qb.tokens, "SELECT", str)
return qb
}
// ForUpdate add the FOR UPDATE clause
func (qb *PostgresQueryBuilder) ForUpdate() QueryBuilder {
qb.tokens = append(qb.tokens, "FOR UPDATE")
return qb
}
// From join the tables
func (qb *PostgresQueryBuilder) From(tables ...string) QueryBuilder {
str := processingStr(tables)
qb.tokens = append(qb.tokens, "FROM", str)
return qb
}
// InnerJoin INNER JOIN the table
func (qb *PostgresQueryBuilder) InnerJoin(table string) QueryBuilder {
str := fmt.Sprintf("%s%s%s", quote, table, quote)
qb.tokens = append(qb.tokens, "INNER JOIN", str)
return qb
}
// LeftJoin LEFT JOIN the table
func (qb *PostgresQueryBuilder) LeftJoin(table string) QueryBuilder {
str := fmt.Sprintf("%s%s%s", quote, table, quote)
qb.tokens = append(qb.tokens, "LEFT JOIN", str)
return qb
}
// RightJoin RIGHT JOIN the table
func (qb *PostgresQueryBuilder) RightJoin(table string) QueryBuilder {
str := fmt.Sprintf("%s%s%s", quote, table, quote)
qb.tokens = append(qb.tokens, "RIGHT JOIN", str)
return qb
}
// On join with on cond
func (qb *PostgresQueryBuilder) On(cond string) QueryBuilder {
var str string
cond = strings.Replace(cond, " ", "", -1)
slice := strings.Split(cond, "=")
for i := 0; i < len(slice); i++ {
sli := strings.Split(slice[i], ".")
s := strings.Join(sli, `"."`)
s = fmt.Sprintf("%s%s%s", quote, s, quote)
if i == 0 {
str = s + " =" + " "
} else {
str += s
}
}
qb.tokens = append(qb.tokens, "ON", str)
return qb
}
// Where join the Where cond
func (qb *PostgresQueryBuilder) Where(cond string) QueryBuilder {
qb.tokens = append(qb.tokens, "WHERE", cond)
return qb
}
// And join the and cond
func (qb *PostgresQueryBuilder) And(cond string) QueryBuilder {
qb.tokens = append(qb.tokens, "AND", cond)
return qb
}
// Or join the or cond
func (qb *PostgresQueryBuilder) Or(cond string) QueryBuilder {
qb.tokens = append(qb.tokens, "OR", cond)
return qb
}
// In join the IN (vals)
func (qb *PostgresQueryBuilder) In(vals ...string) QueryBuilder {
qb.tokens = append(qb.tokens, "IN", "(", strings.Join(vals, CommaSpace), ")")
return qb
}
// OrderBy join the Order by fields
func (qb *PostgresQueryBuilder) OrderBy(fields ...string) QueryBuilder {
str := processingStr(fields)
qb.tokens = append(qb.tokens, "ORDER BY", str)
return qb
}
// Asc join the asc
func (qb *PostgresQueryBuilder) Asc() QueryBuilder {
qb.tokens = append(qb.tokens, "ASC")
return qb
}
// Desc join the desc
func (qb *PostgresQueryBuilder) Desc() QueryBuilder {
qb.tokens = append(qb.tokens, "DESC")
return qb
}
// Limit join the limit num
func (qb *PostgresQueryBuilder) Limit(limit int) QueryBuilder {
qb.tokens = append(qb.tokens, "LIMIT", strconv.Itoa(limit))
return qb
}
// Offset join the offset num
func (qb *PostgresQueryBuilder) Offset(offset int) QueryBuilder {
qb.tokens = append(qb.tokens, "OFFSET", strconv.Itoa(offset))
return qb
}
// GroupBy join the Group by fields
func (qb *PostgresQueryBuilder) GroupBy(fields ...string) QueryBuilder {
str := processingStr(fields)
qb.tokens = append(qb.tokens, "GROUP BY", str)
return qb
}
// Having join the Having cond
func (qb *PostgresQueryBuilder) Having(cond string) QueryBuilder {
qb.tokens = append(qb.tokens, "HAVING", cond)
return qb
}
// Update join the update table
func (qb *PostgresQueryBuilder) Update(tables ...string) QueryBuilder {
str := processingStr(tables)
qb.tokens = append(qb.tokens, "UPDATE", str)
return qb
}
// Set join the set kv
func (qb *PostgresQueryBuilder) Set(kv ...string) QueryBuilder {
qb.tokens = append(qb.tokens, "SET", strings.Join(kv, CommaSpace))
return qb
}
// Delete join the Delete tables
func (qb *PostgresQueryBuilder) Delete(tables ...string) QueryBuilder {
qb.tokens = append(qb.tokens, "DELETE")
if len(tables) != 0 {
str := processingStr(tables)
qb.tokens = append(qb.tokens, str)
}
return qb
}
// InsertInto join the insert SQL
func (qb *PostgresQueryBuilder) InsertInto(table string, fields ...string) QueryBuilder {
str := fmt.Sprintf("%s%s%s", quote, table, quote)
qb.tokens = append(qb.tokens, "INSERT INTO", str)
if len(fields) != 0 {
fieldsStr := strings.Join(fields, CommaSpace)
qb.tokens = append(qb.tokens, "(", fieldsStr, ")")
}
return qb
}
// Values join the Values(vals)
func (qb *PostgresQueryBuilder) Values(vals ...string) QueryBuilder {
valsStr := strings.Join(vals, CommaSpace)
qb.tokens = append(qb.tokens, "VALUES", "(", valsStr, ")")
return qb
}
// Subquery join the sub as alias
func (qb *PostgresQueryBuilder) Subquery(sub string, alias string) string {
return fmt.Sprintf("(%s) AS %s", sub, alias)
}
// String join all tokens
func (qb *PostgresQueryBuilder) String() string {
s := strings.Join(qb.tokens, " ")
qb.tokens = qb.tokens[:0]
return s
}