convert cast
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使用例子:
--38、查询Student表中每个学生的姓名和年龄。
--select * ,cast(substring(CONVERT(nvarchar,GETDATE() , 25) , 1 , 4) as int) - cast(substring(CONVERT(nvarchar,sbirthday , 25) , 1 , 4) as int) from STUDENT
convert的样式表
0
Feb 22 2006 4:26PM
CONVERT(CHAR(19), CURRENT_TIMESTAMP, 0)
1
02/22/06
CONVERT(CHAR(8), CURRENT_TIMESTAMP, 1)
2
06.02.22
CONVERT(CHAR(8), CURRENT_TIMESTAMP, 2)
3
22/02/06
CONVERT(CHAR(8), CURRENT_TIMESTAMP, 3)
4
22.02.06
CONVERT(CHAR(8), CURRENT_TIMESTAMP, 4)
5
22-02-06
CONVERT(CHAR(8), CURRENT_TIMESTAMP, 5)
6
22 Feb 06
CONVERT(CHAR(9), CURRENT_TIMESTAMP, 6)
7
Feb 22, 06
CONVERT(CHAR(10), CURRENT_TIMESTAMP, 7)
8
16:26:08
CONVERT(CHAR(8), CURRENT_TIMESTAMP, 8)
9
Feb 22 2006 4:26:08:020PM
CONVERT(CHAR(26), CURRENT_TIMESTAMP, 9)
10
02-22-06
CONVERT(CHAR(8), CURRENT_TIMESTAMP, 10)
11
06/02/22
CONVERT(CHAR(8), CURRENT_TIMESTAMP, 11)
12
060222
CONVERT(CHAR(6), CURRENT_TIMESTAMP, 12)
13
22 Feb 2006 16:26:08:020
CONVERT(CHAR(24), CURRENT_TIMESTAMP, 13)
14
16:26:08:037
CONVERT(CHAR(12), CURRENT_TIMESTAMP, 14)
20
2006-02-22 16:26:08
CONVERT(CHAR(19), CURRENT_TIMESTAMP, 20)
21
2006-02-22 16:26:08.037
CONVERT(CHAR(23), CURRENT_TIMESTAMP, 21)
22
02/22/06 4:26:08 PM
CONVERT(CHAR(20), CURRENT_TIMESTAMP, 22)
23
2006-02-22
CONVERT(CHAR(10), CURRENT_TIMESTAMP, 23)
24
16:26:08
CONVERT(CHAR(8), CURRENT_TIMESTAMP, 24)
25
2006-02-22 16:26:08.037
CONVERT(CHAR(23), CURRENT_TIMESTAMP, 25)
100
Feb 22 2006 4:26PM
CONVERT(CHAR(19), CURRENT_TIMESTAMP, 100)
101
02/22/2006
CONVERT(CHAR(10), CURRENT_TIMESTAMP, 101)
102
2006.02.22
CONVERT(CHAR(10), CURRENT_TIMESTAMP, 102)
103
22/02/2006
CONVERT(CHAR(10), CURRENT_TIMESTAMP, 103)
104
22.02.2006
CONVERT(CHAR(10), CURRENT_TIMESTAMP, 104)
105
22-02-2006
CONVERT(CHAR(10), CURRENT_TIMESTAMP, 105)
106
22 Feb 2006
CONVERT(CHAR(11), CURRENT_TIMESTAMP, 106)
107
Feb 22, 2006
CONVERT(CHAR(12), CURRENT_TIMESTAMP, 107)
108
16:26:08
CONVERT(CHAR(8), CURRENT_TIMESTAMP, 108)
109
Feb 22 2006 4:26:08:067PM
CONVERT(CHAR(26), CURRENT_TIMESTAMP, 109)
110
02-22-2006
CONVERT(CHAR(10), CURRENT_TIMESTAMP, 110)
111
2006/02/22
CONVERT(CHAR(10), CURRENT_TIMESTAMP, 111)
112
20060222
CONVERT(CHAR(8), CURRENT_TIMESTAMP, 112)
113
22 Feb 2006 16:26:08:067
CONVERT(CHAR(24), CURRENT_TIMESTAMP, 113)
114
16:26:08:067
CONVERT(CHAR(12), CURRENT_TIMESTAMP, 114)
120
2006-02-22 16:26:08
CONVERT(CHAR(19), CURRENT_TIMESTAMP, 120)
121
2006-02-22 16:26:08.080
CONVERT(CHAR(23), CURRENT_TIMESTAMP, 121)
126
2006-02-22T16:26:08.080
CONVERT(CHAR(23), CURRENT_TIMESTAMP, 126)
127
2006-02-22T16:26:08.080
CONVERT(CHAR(23), CURRENT_TIMESTAMP, 127)
130
24 ???? 1427 4:26:08:080PM
CONVERT(CHAR(32), CURRENT_TIMESTAMP, 130)
131
24/01/1427 4:26:08:080PM
CONVERT(CHAR(25), CURRENT_TIMESTAMP, 131)
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