blob: ea9a6e6f64d1363d48f4629b0be39244a3f32cdc (
plain)
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
|
--
-- NAME
-- all inputs are silently truncated at NAMEDATALEN (32) characters
--
-- fixed-length by reference
SELECT name 'name string' = name 'name string' AS "True";
True
------
t
(1 row)
SELECT name 'name string' = name 'name string ' AS "False";
False
-------
f
(1 row)
--
--
--
CREATE TABLE NAME_TBL(f1 name);
INSERT INTO NAME_TBL(f1) VALUES ('ABCDEFGHIJKLMNOP');
INSERT INTO NAME_TBL(f1) VALUES ('abcdefghijklmnop');
INSERT INTO NAME_TBL(f1) VALUES ('asdfghjkl;');
INSERT INTO NAME_TBL(f1) VALUES ('343f%2a');
INSERT INTO NAME_TBL(f1) VALUES ('d34aaasdf');
INSERT INTO NAME_TBL(f1) VALUES ('');
INSERT INTO NAME_TBL(f1) VALUES ('1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ');
SELECT '' AS seven, NAME_TBL.*;
seven | f1
-------+---------------------------------
| ABCDEFGHIJKLMNOP
| abcdefghijklmnop
| asdfghjkl;
| 343f%2a
| d34aaasdf
|
| 1234567890ABCDEFGHIJKLMNOPQRSTU
(7 rows)
SELECT '' AS six, c.f1 FROM NAME_TBL c WHERE c.f1 <> 'ABCDEFGHIJKLMNOP';
six | f1
-----+---------------------------------
| abcdefghijklmnop
| asdfghjkl;
| 343f%2a
| d34aaasdf
|
| 1234567890ABCDEFGHIJKLMNOPQRSTU
(6 rows)
SELECT '' AS one, c.f1 FROM NAME_TBL c WHERE c.f1 = 'ABCDEFGHIJKLMNOP';
one | f1
-----+------------------
| ABCDEFGHIJKLMNOP
(1 row)
SELECT '' AS three, c.f1 FROM NAME_TBL c WHERE c.f1 < 'ABCDEFGHIJKLMNOP';
three | f1
-------+---------------------------------
| 343f%2a
|
| 1234567890ABCDEFGHIJKLMNOPQRSTU
(3 rows)
SELECT '' AS four, c.f1 FROM NAME_TBL c WHERE c.f1 <= 'ABCDEFGHIJKLMNOP';
four | f1
------+---------------------------------
| ABCDEFGHIJKLMNOP
| 343f%2a
|
| 1234567890ABCDEFGHIJKLMNOPQRSTU
(4 rows)
SELECT '' AS three, c.f1 FROM NAME_TBL c WHERE c.f1 > 'ABCDEFGHIJKLMNOP';
three | f1
-------+------------------
| abcdefghijklmnop
| asdfghjkl;
| d34aaasdf
(3 rows)
SELECT '' AS four, c.f1 FROM NAME_TBL c WHERE c.f1 >= 'ABCDEFGHIJKLMNOP';
four | f1
------+------------------
| ABCDEFGHIJKLMNOP
| abcdefghijklmnop
| asdfghjkl;
| d34aaasdf
(4 rows)
SELECT '' AS seven, c.f1 FROM NAME_TBL c WHERE c.f1 ~ '.*';
seven | f1
-------+---------------------------------
| ABCDEFGHIJKLMNOP
| abcdefghijklmnop
| asdfghjkl;
| 343f%2a
| d34aaasdf
|
| 1234567890ABCDEFGHIJKLMNOPQRSTU
(7 rows)
SELECT '' AS zero, c.f1 FROM NAME_TBL c WHERE c.f1 !~ '.*';
zero | f1
------+----
(0 rows)
SELECT '' AS three, c.f1 FROM NAME_TBL c WHERE c.f1 ~ '[0-9]';
three | f1
-------+---------------------------------
| 343f%2a
| d34aaasdf
| 1234567890ABCDEFGHIJKLMNOPQRSTU
(3 rows)
SELECT '' AS two, c.f1 FROM NAME_TBL c WHERE c.f1 ~ '.*asdf.*';
two | f1
-----+------------
| asdfghjkl;
| d34aaasdf
(2 rows)
DROP TABLE NAME_TBL;
|
