Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

SQL ServerÀïÃæ¿ÉÄܾ­³£»áÓõ½µÄÈÕÆÚ¸ñʽת»»·½·¨

ÀýÈç:
select getdate()
2004-09-12 11:06:08.177
Õâ¶ÔÓÚÔÚÒª²»Í¬Êý¾Ý¿â¼ä×ªÒÆÊý¾Ý»òÕßϰ¹ßoracleÈÕÆÚ¸ñʽYYYY-MM-DD HH24:MI:SSµÄÈ˶àÉÙÓÐЩ²»·½±ã.
ÎÒÕûÀíÁËÒ»ÏÂSQL ServerÀïÃæ¿ÉÄܾ­³£»áÓõ½µÄÈÕÆÚ¸ñʽת»»·½·¨:
¾ÙÀýÈçÏÂ:
select CONVERT(varchar, getdate(), 120 )
2004-09-12 11:06:08
select replace(replace(replace(CONVERT(varchar, getdate(), 120 ),'-',''),' ',''),':','')
20040912110608
select CONVERT(varchar(12) , getdate(), 111 )
2004/09/12
select CONVERT(varchar(12) , getdate(), 112 )
20040912
select CONVERT(varchar(12) , getdate(), 102 )
2004.09.12
ÆäËüÎÒ²»³£ÓõÄÈÕÆÚ¸ñʽת»»·½·¨:
select CONVERT(varchar(12) , getdate(), 101 )
09/12/2004
select CONVERT(varchar(12) , getdate(), 103 )
12/09/2004
select CONVERT(varchar(12) , getdate(), 104 )
12.09.2004
select CONVERT(varchar(12) , getdate(), 105 )
12-09-2004
select CONVERT(varchar(12) , getdate(), 106 )
12 09 2004
select CONVERT(varchar(12) , getdate(), 107 )
09 12, 2004
select CONVERT(varchar(12) , getdate(), 108 )
11:06:08
select CONVERT(varchar(12) , getdate(), 109 )
09 12 2004 1
select CONVERT(varchar(12) , getdate(), 110 )
09-12-2004
select CONVERT(varchar(12) , getdate(), 113 )
12 09 2004 1
select CONVERT(varchar(12) , getdate(), 114 )
11:06:08.177


Ïà¹ØÎĵµ£º

[ת]Oracle,sql serverµÄ¿ÕÖµ(null)ÅжÏ


sql server
Ìæ»»null:isnull(arg,value)
Èç:select isnull(price,0.0) from orders                             ,Èç¹ûpriceΪnullµÄ»°£¬ÓÃ0 ......

SQL²éѯ·ÖÎöÆ÷Íâ¹ÒÔ´Âë·ÖÏí

±¾ÈËдÁËÒ»¸öSQL²éѯ·ÖÎöÆ÷À©Õ¹¹¤¾ß£¬¹¦ÄÜÀàËÆDelphiµÄToDo¡£¿ÉÒÔ·½±ã¿ª·¢ÕßÔÚ´óÁ¿µÄSQL½Å±¾ÖпìËÙÕÒµ½Ã¿¸öÄ£¿é¡¢To-Do£¬´Ó¶øÌá¸ß¿ª·¢¸ßÀûÂÊ¡£
ʹÓõÄʱºòÏÈÔËÐÐSQL²éѯ·ÖÎöÆ÷£¬È»ºóÔËÐб¾³ÌÐò¼´¿É£¨¿ÉÒÔ¹¤¾ß|×Ô¶¨ÒåÖÐÅäÖã©¡£°´F2ÏÔʾTo-Do List´°¿Ú£¬°´Alt+F2ÔÚµ±Ç°Î»ÖòåÈëTo-Do¡£
ÓÉÓÚʱ¼ä¹ØÏµ£¬±¾³ÌÐò²¢Î´ÍêÉÆ£¬ÔÚË« ......

sqlËø»úÖÆ´óÈ«

ËøµÄ¸ÅÊö ¡¡¡¡Ò». ΪʲôҪÒýÈëËø
¡¡¡¡¶à¸öÓû§Í¬Ê±¶ÔÊý¾Ý¿âµÄ²¢·¢²Ù×÷ʱ»á´øÀ´ÒÔÏÂÊý¾Ý²»Ò»ÖµÄÎÊÌ⣺
¡¡¡¡¶ªÊ§¸üÐÂ
¡¡¡¡A£¬BÁ½¸öÓû§¶ÁͬһÊý¾Ý²¢½øÐÐÐ޸쬯äÖÐÒ»¸öÓû§µÄÐ޸Ľá¹ûÆÆ»µÁËÁíÒ»¸öÐ޸ĵĽá¹û£¬±ÈÈ綩Ʊϵͳ
¡¡¡¡Ôà¶Á
¡¡¡¡AÓû§ÐÞ¸ÄÁËÊý¾Ý£¬ËæºóBÓû§ÓÖ¶Á³ö¸ÃÊý¾Ý£¬µ«AÓû§ÒòΪijЩԭÒòÈ¡ÏûÁ˶ÔÊý¾ ......

SQL²Ù×÷È«¼¯

ÏÂÁÐÓï¾ä²¿·ÖÊÇMssqlÓï¾ä£¬²»¿ÉÒÔÔÚaccessÖÐʹÓá£
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¡¢ËµÃ÷£º´´½¨Êý¾Ý¿â
CREATE DATABASE data ......

SQL SERVERÁÙʱ±íµÄʹÓÃ


drop table #Tmp   --ɾ³ýÁÙʱ±í#Tmp
create table #Tmp --´´½¨ÁÙʱ±í#Tmp
(
    ID   int IDENTITY (1,1)     not null, --´´½¨ÁÐID,²¢ÇÒÿ´ÎÐÂÔöÒ»Ìõ¼Ç¼¾Í»á¼Ó1
    WokNo          &n ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ