SQL Server中Convert轉化函數的使用

格式：

CONVERT(data_type,expression[,style])

說明:

此樣式一般在時間類型(datetime,smalldatetime)與字符串類型(nchar,nvarchar,char,varchar)

相互轉換的時候才用到.

例子:

SELECT CONVERT(varchar(30),getdate(),101) now

結果為:

now

---------------------------------------

|09/15/2001

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

style數字在轉換時間時的含義如下:

------------------------------------------------------------------------------------------------------------

Style(2位表示年份)    |   Style(4位表示年份)    |    輸入輸出格式                                    

------------------------------------------------------------------------------------------------------------

0                                | 100                            |    mon dd yyyy hh:miAM(或PM)              

------------------------------------------------------------------------------------------------------------

1                                |   101    美國                 |    mm/dd/yy                                       

------------------------------------------------------------------------------------------------------------

2                                |   102     ANSI                |    yy-mm-dd                                        

------------------------------------------------------------------------------------------------------------

3                                |   103     英法                 |    dd/mm/yy                                       

------------------------------------------------------------------------------------------------------------

4                                |   104     德國                 |    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     美國                  |    mm-dd-yy                                         

------------------------------------------------------------------------------------------------------------

11                              |   111     日本                  |    yy/mm/dd                                        

------------------------------------------------------------------------------------------------------------

12                              |   112     ISO                   |    yymmdd                                           

------------------------------------------------------------------------------------------------------------

13                              |   113      歐洲默認值      |    dd mon yyyy hh:mi:ss:mmm(24小時制)  

------------------------------------------------------------------------------------------------------------

14                              |   114                             |    hh:mi:ss:mmm(24小時制)                    

------------------------------------------------------------------------------------------------------------

20                              |   120      ODBC 規范      |     yyyy-mm-dd hh:mi:ss(24小時制)         

------------------------------------------------------------------------------------------------------------

21                              |    121                            |     yyyy-mm-dd hh:mi:ss:mmm(24小時制)

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