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
|
SELECT HOUR(NULL);
HOUR(NULL)
NULL
SELECT HOUR();
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your Drizzle server version for the right syntax to use near ')' at line 1
SELECT HOUR(1, 0);
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your Drizzle server version for the right syntax to use near ' 0)' at line 1
SELECT HOUR("xxx");
ERROR HY000: Received an invalid datetime value 'xxx'.
SELECT HOUR("0000-00-00");
ERROR HY000: Received an invalid datetime value '0000-00-00'.
SELECT HOUR("0000-01-01");
ERROR HY000: Received an invalid datetime value '0000-01-01'.
SELECT HOUR("0001-00-01");
ERROR HY000: Received an invalid datetime value '0001-00-01'.
SELECT HOUR("0001-01-00");
ERROR HY000: Received an invalid datetime value '0001-01-00'.
SELECT HOUR("2000-02-30");
ERROR HY000: Received an invalid datetime value '2000-02-30'.
SELECT HOUR("1900-02-29");
ERROR HY000: Received an invalid datetime value '1900-02-29'.
SELECT HOUR('1976-15-15');
ERROR HY000: Received an invalid datetime value '1976-15-15'.
SELECT HOUR('23:59:70');
ERROR HY000: Received an invalid datetime value '23:59:70'.
SELECT HOUR('23:70:59');
ERROR HY000: Received an invalid datetime value '23:70:59'.
SELECT HOUR('26:00:00');
ERROR HY000: Received an invalid datetime value '26:00:00'.
SELECT HOUR("2009-01-12");
HOUR("2009-01-12")
0
SELECT HOUR("70-12-31");
HOUR("70-12-31")
0
SELECT HOUR('07/31/2009');
HOUR('07/31/2009')
0
SELECT HOUR("2008-11-30 03:30:15");
HOUR("2008-11-30 03:30:15")
3
SELECT HOUR("2008-11-30T03:30:15");
HOUR("2008-11-30T03:30:15")
3
SELECT HOUR("20081130033015");
HOUR("20081130033015")
3
SELECT HOUR(20081130033015);
HOUR(20081130033015)
3
SELECT HOUR(20081130033015.01);
HOUR(20081130033015.01)
3
SELECT HOUR(231115);
HOUR(231115)
23
SELECT HOUR("231115");
HOUR("231115")
23
SELECT HOUR("23:59:59");
HOUR("23:59:59")
23
USE test;
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (
int_fld INT NOT NULL
, date_fld DATE NOT NULL
, datetime_fld DATETIME NOT NULL
, timestamp_fld TIMESTAMP NOT NULL
, char_fld CHAR(22) NOT NULL
, varchar_fld VARCHAR(22) NOT NULL
, text_fld TEXT NOT NULL
, blob_fld BLOB NOT NULL
);
INSERT INTO t1 VALUES (
20071130
, "2007-11-30"
, "2007-11-30 16:30:19"
, "2007-11-30T16:30:19"
, "2007-11-30 16:30:19"
, "2007-11-30 16:30:19"
, "2007-11-30T16:30:19"
, "2007-11-30T16:30:19"
);
SELECT HOUR(int_fld) FROM t1;
HOUR(int_fld)
0
SELECT HOUR(date_fld) FROM t1;
HOUR(date_fld)
0
SELECT HOUR(datetime_fld) FROM t1;
HOUR(datetime_fld)
16
SELECT HOUR(timestamp_fld) FROM t1;
HOUR(timestamp_fld)
16
SELECT HOUR(char_fld) FROM t1;
HOUR(char_fld)
16
SELECT HOUR(varchar_fld) FROM t1;
HOUR(varchar_fld)
16
SELECT HOUR(text_fld) FROM t1;
HOUR(text_fld)
16
SELECT HOUR(blob_fld) FROM t1;
HOUR(blob_fld)
16
DROP TABLE t1;
|