SqlServer之Convert 函数应用格式化日期

sqlServer之Convert 函数应用

Select CONVERT(varchar(100),GETDATE(),0): 05 16 2006 10:57AM
Select CONVERT(varchar(100),1): 05/16/06
Select CONVERT(varchar(100),2): 06.05.16
Select CONVERT(varchar(100),3): 16/05/06
Select CONVERT(varchar(100),4): 16.05.06
Select CONVERT(varchar(100),5): 16-05-06
Select CONVERT(varchar(100),6): 16 05 06
Select CONVERT(varchar(100),7): 05 16,06
Select CONVERT(varchar(100),8): 10:57:46
Select CONVERT(varchar(100),9): 05 16 2006 10:57:46:827AM
Select CONVERT(varchar(100),10): 05-16-06
Select CONVERT(varchar(100),11): 06/05/16
Select CONVERT(varchar(100),12): 060516
Select CONVERT(varchar(100),13): 16 05 2006 10:57:46:937
Select CONVERT(varchar(100),14): 10:57:46:967
Select CONVERT(varchar(100),20): 2006-05-16 10:57:47
Select CONVERT(varchar(100),21): 2006-05-16 10:57:47.157
Select CONVERT(varchar(100),22): 05/16/06 10:57:47 AM
Select CONVERT(varchar(100),23): 2006-05-16
Select CONVERT(varchar(100),24): 10:57:47
Select CONVERT(varchar(100),25): 2006-05-16 10:57:47.250
Select CONVERT(varchar(100),100): 05 16 2006 10:57AM
Select CONVERT(varchar(100),101): 05/16/2006
Select CONVERT(varchar(100),102): 2006.05.16
Select CONVERT(varchar(100),103): 16/05/2006
Select CONVERT(varchar(100),104): 16.05.2006
Select CONVERT(varchar(100),105): 16-05-2006
Select CONVERT(varchar(100),106): 16 05 2006
Select CONVERT(varchar(100),107): 05 16,2006
Select CONVERT(varchar(100),108): 10:57:49
Select CONVERT(varchar(100),109): 05 16 2006 10:57:49:437AM
Select CONVERT(varchar(100),110): 05-16-2006
Select CONVERT(varchar(100),111): 2006/05/16
Select CONVERT(varchar(100),112): 20060516
Select CONVERT(varchar(100),113): 16 05 2006 10:57:49:513
Select CONVERT(varchar(100),114): 10:57:49:547
Select CONVERT(varchar(100),120): 2006-05-16 10:57:49
Select CONVERT(varchar(100),121): 2006-05-16 10:57:49.700
Select CONVERT(varchar(100),126): 2006-05-16T10:57:49.827
Select CONVERT(varchar(100),130): 18 ???? ?????? 1427 10:57:49:907AM
Select CONVERT(varchar(100),131): 18/04/1427 10:57:49:920AM

格式:
CONVERT(data_type,expression[,style])

说明:
此样式一般在时间类型(datetime,smalldatetime)与字符串类型(nchar,nvarchar,char,varchar)
相互转换的时候才用到.

例子:
SELECT CONVERT(varchar(30),getdate(),101) Now
结果为:
Now
---------------------------------------
|09/15/2001

style数字在转换时间时的含义如下:

------------------------------------------------------------------------------------------------------------
Style(2位表示年份) | Style(4位表示年份) | 输入输出格式
------------------------------------------------------------------------------------------------------------
0 | 100 | mon dd yyyy hh:miAM(或PM)
------------------------------------------------------------------------------------------------------------
1 | 101 美国 | mm/dd/yy
------------------------------------------------------------------------------------------------------------
2 | 102 ANSI | yy-mm-dd
------------------------------------------------------------------------------------------------------------
3 | 103 英法 | dd/mm/yy
------------------------------------------------------------------------------------------------------------
4 | 104 德国 | dd.mm.yy
------------------------------------------------------------------------------------------------------------
5 | 105 意大利 | dd-mm-yy
------------------------------------------------------------------------------------------------------------
6 | 106 | dd mon yy
------------------------------------------------------------------------------------------------------------
7 | 107 | mon dd,yy
------------------------------------------------------------------------------------------------------------
8 | 108 | hh:mm:ss
------------------------------------------------------------------------------------------------------------
9 | 109 | mon dd yyyy hh:mi:ss:mmmmAM(或PM)
------------------------------------------------------------------------------------------------------------
10 | 110 美国 | mm-dd-yy
------------------------------------------------------------------------------------------------------------
11 | 111 日本 | yy/mm/dd
------------------------------------------------------------------------------------------------------------
12 | 112 ISO | yymmdd
------------------------------------------------------------------------------------------------------------
13 | 113 欧洲默认值 | dd mon yyyy hh:mi:ss:mmm(24小时制)
------------------------------------------------------------------------------------------------------------
14 | 114 | hh:mi:ss:mmm(24小时制)
------------------------------------------------------------------------------------------------------------
20 | 120 ODBC 规范 | yyyy-mm-dd hh:mi:ss(24小时制)
------------------------------------------------------------------------------------------------------------
21 | 121 | yyyy-mm-dd hh:mi:ss:mmm(24小时制)
------------------------------------------------------------------------------------------------------------

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