Ò׽ؽØͼÈí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

SQLÖÐʹÓÃCONVERTת»»Ê±¼äÊä³ö¸ñʽ

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(


Ïà¹ØÎĵµ£º

sql ²éѯ

ÓÐÒÔ϶þÕÅ±í£º
Õþµ³±í£ºÕþµ³ID£¬Õþµ³Ãû³Æ
ÒéÔ±±í£ºÒéÔ±ID£¬ÒéÔ±Ãû³Æ£¬Õþµ³ID
ÒªÇó²éѯËùÓеÄÕþµ³ÐÅÏ¢£¬°üº¬£ºÕþµ³Ãû³Æ£¬ÒéÔ±ÈËÊý£¬²¢°´ÒéÔ±ÈËÊýµÄ½µÐòÅÅÁУ¨²»¿ÉÒÔÓÃ×Ó²éѯ£©¡£
Õý½â:
SELECT a.name,
  COUNT(b.id) AS counts
  from zhen a
left join
  yi b
on a.id=b.zhenid
GROUP ......

½â¾öSQL Server°²×°¹ÒÆð

¹À¼ÆÄãÊÇ°²×°Ê±³öÏÖµÄÎÊÌâ¡£
½â¾ö·½·¨...
¹ØÓÚSQL°²×°±»¹ÒÆðµÄÐÞ¸´´ó¼Ò¿ÉÄܶ¼Óöµ½¹ýµ±SQL±»É¾³ýºóÐèÒªÖØа²×°Ê±£¬½øÈë°²×°½çÃæ¾Í»á³öÏÖSQL´íÎóÌáʾ£º
´ÓÇ°µÄ°²×°³ÌÐò²Ù×÷ʹ°²×°³ÌÐò²Ù×÷¹ÒÆð£¬ÐèÒªÖØÐÂÆô¶¯¼ÆËã»ú
È»¶øÕâЩ¶¼Êǰ׷Ѿ¢£¬²»¹ÜÄãÖØÐÂÆô¶¯¶àÉÙ´ÎÒ²¶¼ÎÞ¼ÃÓÚÊ£¬ÏÂÃæÎҾͽ²½²ÔõÑùÄܹ»½â³ý°²×°»òÉý¼¶Ê±Îļþ±»¹Ò ......

SQL»ù´¡

SQL·ÖÀࣺ
DDL—Êý¾Ý¶¨ÒåÓïÑÔ(CREATE£¬ALTER£¬DROP£¬DECLARE)
DML—Êý¾Ý²Ù×ÝÓïÑÔ(SELECT£¬DELETE£¬UPDATE£¬INSERT)
DCL—Êý¾Ý¿ØÖÆÓïÑÔ(GRANT£¬REVOKE£¬COMMIT£¬ROLLBACK)
Ê×ÏÈ,¼òÒª½éÉÜ»ù´¡Óï¾ä£º
1¡¢´´½¨Êý¾Ý¿â
CREATE DATABASE database-name
2¡¢É¾³ýÊý¾Ý¿â
drop database dbname
3¡¢ ......

Sql Server »ù±¾º¯Êý

1.×Ö·û´®º¯Êý
³¤¶ÈÓë·ÖÎöÓÃ
datalength(Char_expr) ·µ»Ø×Ö·û´®°üº¬×Ö·ûÊý,µ«²»°üº¬ºóÃæµÄ¿Õ¸ñ
substring(expression,start,length) ²»¶à˵ÁË,È¡×Ó´®
right(char_expr,int_expr) ·µ»Ø×Ö·û´®ÓÒ±ßint_expr¸ö×Ö·û
×Ö·û²Ù×÷Àà
upper(char_expr) תΪ´óд
lower(char_expr) תΪСд
space(int_expr) Éú³Éint_expr¸ ......

sql server 2005´¥·¢Æ÷ѧϰ±Ê¼Ç£¨Ò»£©

        ´¥·¢Æ÷ʵ¼ÊÉϾÍÊÇÒ»ÖÖÌØÊâÀàÐ͵Ĵ洢¹ý³Ì£¬ÆäÌØÊâÐÔ±íÏÖÔÚ£ºËüÊÇÔÚÖ´ÐÐÌض¨µÄT-SQL ×Ô¶¯Ïà¼ÓµÄ¡£
   
        ´¥·¢Æ÷·ÖΪÁ½Àࣺ 
            &nbs ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ