3月30日 sql常用日期格式转换

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
---------------------------------------
|03/30/2015 

===================================================================

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) 
------------------------------------------------------------------------------------------------------------

语句及查询结果： 

--sql server 字符串转成日期格式，GETDATE()是需要替换的时间格式

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