Summary of usage of sqlserver CONVERT() function

How to use CONVERT:

Format:
CONVERT(data_type,expression[,style])
Description:
This style is generally used between time type (datetime, smalldatetime) and string type (nchar, nvarchar, char, varchar)
Only used when converting each other.
Example:
SELECT CONVERT(varchar(30),getdate(),101) now
The result is
now
-------------------------------- -----------------------
09/15/2001

style numbers have the following meaning when converting time
---------- -------------------------------------------------- -------------------------------------
Style (2 digits indicating the year) | Style (4 digits) Indicates the year) | Input and output format
------------------------------------------------ -------------------------------------------------- -----
- | 0 or 100 | mon dd yyyy hh:miAM (or PM)
--------------------------- -------------------------------------------------- --------------------
1 | 101 | mm/dd/yy
------------------ -------------------------------------------------- ----------------------------
2 | 102 | yy-mm-dd
---------- -------------------------------------------------- ------------------------------------
3 | 103 | dd/mm/yy
--- -------------------------------------------------- --------------------------------------------------
4 | 104 | dd -mm-yy
------------------------------------------------ -------------------------------------------------- --
5 | 105 | dd-mm-yy
---------------------------------------- -------------------------------------------------- ----------
6 | 106 | dd mon yy
---------------------------------- -------------------------------------------------- ----------------
7 | 107 | mon dd,yy
------------------------ -------------------------------------------------- -----------------------
8 | 108 | hh:mm:ss
---------------- -------------------------------------------------- ----------------------------------
- | 9 or 109 | mon dd yyyy hh:mi:ss:mmmmAM(or PM)
-------------------------------------------------- --------------------------------------------------
10 | 110 | mm-dd-yy
--------------------------------------------- -------------------------------------------------- --------
11 | 111 | yy/mm/dd
---------------------------------- -------------------------------------------------- ----------------
12 | 112 | yymmdd
--------------------------- -------------------------------------------------- --------------------
- | 13 or 113 | dd mon yyyy hh:mi:ss:mmm (24-hour format)
------- -------------------------------------------------- ----------------------------------------
14 | 114 | hh:mi:ss :mmm (24-hour format)
------------------------------------------------ -------------------------------------------------- -----
- | 20 or 120 | yyyy-mm-dd hh:mi:ss (24-hour format)
---------------------- -------------------------------------------------- -----------------------
- | 21 or 121 | yyyy-mm-dd hh:mi:ss:mmm (24-hour format)
-------------------------------------------------- --------------------------------------------------
Can be used style value:

SqlServer之Convert 函数应用 

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 
Select CONVERT(varchar(100), GETDATE(), 131): 18/04/1427 10:57:49:920AM