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

mssqlÊý¾Ýµ¸Èëmysql

´ÓÍøÉÏ¿´Á˺ܲ»ÉÙÕâ·½ÃæµÄ˵·¨£¬¶ÔÎÒÀ´ËµÓô¦²»ÊǺܴó¡£ÏÖÔÚ½«Ò»¸ösql serverµÄÊý¾Ý¿âÀïµÄÊý¾Ýµ¼Èëµ½mysqlÖУ¬ÀïÃæµÄ×Ö¶ÎÓÐËù¸Ä¶¯µÄ¡£×Ô¼ºÐ´ÁËÒ»¸öµ¼ÈëµÄ²»ÊǺÜÀíÏ룬ÀÏÊǶªÊý¾Ý£¬²»ÖªµÀÊÇʲôԭÒò£¬»¹Íû¸ßÊÖûָµã°¡£¡
ÓÃphpд³ÌÐòµ¼Èë°É£¡ÕâÑù¾Í²»»áÓÐÊý¾Ý¶ªÊ§ÁË£¬Ö»ÊÇËÙ¶È»áÂýµã¡£

ÎÒµ½ÊÇÓÃPHPдÁËÒ»¸ö£¬µ«ÊDz»ÊǺÜÀíÏëÄØ¡£ÀÏÊǶªÊ§Êý¾Ý£¬²»ÖªµÀÔõôµÄÎÊÌâ¡£ÓÃPHPҪдºÜ¶àµÄÀàÐÍת»»µÄºÜÂé·³£¬»òÐíÄãÓиüºÃµÄ½â¾ö°ì·¨£¿

Êý¾ÝÁ¿´ó¸Å¶à´ó£¿Íâ¼ü¹ØÁª¹ØÏµ¸´ÔÓô£¿SPÖ®Àà´òËãÔõô´¦Àí£¿µ¼Èëµ½mysql´òËãÓÃÄÄÖÖÒýÇæ£¿

Êý¾Ý²»¶à£¬×î¶àµÄÒ²¾Í3ÍòÀ´Ìõ£¬Ã»ÄãÏëµÄÄÇô¸´Ôӵġ£Ö»ÊÇÒª°ÑÊý¾ÝŪ¹ýÀ´¾ÍÍêÊÂÁË¡£

mssqlÖÐ×Ö¶ÎÀàÐÍΪnvarchar()µÄÒªÓÃconvert()º¯Êýת»»³Évarchar()²Å¿ÉÒÔÔÚmysqlÖб£´æ¡£

Õâ¸öÎÒµ½×ªÁË¡£

×Ô¼º¶¨Ï£¬Ã»È˰ïæÂð£¿

Ñ­»·Êý¾Ý,²åÈë. ¾ÍÕâô°ì¾ÍOKÁË.

ûÓÐÀí½âÄãËù˵µÄ¶ªÊý¾ÝÊÇʲô¸ÅÄî. ÀíÂÛÉÏ,¶ªÊý¾Ý,Ö»ÊÇÄãÉú³ÉµÄ²åÈëSQLÓÐÎÊÌâ.

ÐÞÕýÉú³ÉSQLµÄBUG¾ÍOKÁË.


Ïà¹ØÎÊ´ð£º

ÇóÒ»¸ömssqlµÄsqlÓï¾ä - MS-SQL Server / »ù´¡Àà

ÅжϱíÖÐÊÇ·ñÓдóÓÚ10ÌõÒÔÉϵÄÊý¾Ý£¬
Èç¹û´æÔÚÔò°´×îºÃ¼ÈëµÄʱ¼ä£¬É¾³ýµô¶àÓàµÄÊý¾Ý¡£¡£
±£³ÖÊý¾Ý±íÖÐÖ»ÓÐ10Ìõ×îеÄÊý¾Ý¡£¡£
лл¡£
select ID,count(1) from TB group by ID having count(1)>10


SQL ......

mssqlº¯Êý·­Òë - ÆäËûÊý¾Ý¿â¿ª·¢ / MySQL/Postgresql

¹òÇó½«ÒÔϺ¯Êý·­ÒëΪ mysql µÄÓï·¨
CREATE FUNCTION workdayadd( 
@date datetime, --»ù´¡ÈÕÆÚ 
@workday int --ÒªÔö¼ÓµÄ¹¤×÷ÈÕÊý 
)RETURNS datetime 
AS 
BEGIN 
DEC ......

mssql null µÄÎÊÌâ - MS-SQL Server / ÒÉÄÑÎÊÌâ

select case null
when '' then '1' 
when null then '2' --ΪʲôûÓÐÔÚÕâ¸öλÖÃÅжϳöÀ´
else '3' 
end a 
select 1 a,2 b into #a
select isnull(b,0) b from #a where a=2
--bÁÐû ......

mssql ÅúÁ¿²åÈëÊý¾Ý - MS-SQL Server / ÒÉÄÑÎÊÌâ

СµÜÒªÓÃc# ×ö¸öС¹¤¾ß£¬¾ÍÊǸøÊý¾Ý¿âÖеıí¸ñÅúÁ¿²åÈëÊý¾Ý£¬ÎÒÏ뾡Á¿·ûºÏ±í½á¹¹¹ØÏµµÄÊý¾Ý²åÈë½üÀ´£¬ ±ÈÈçÒª¿¼ÂÇÖ÷Í⽡µÈÐÅÏ¢£¬±È·½Ëµ ÓÐ a b c dÈý¸ö±í£¬¶øÎÒÈçºÎÔÚÊý¾Ý¿âÖÐÈ·ÈÏÖ÷¼üºÍÍâ¼ü£¬µ½µ×¸ÃÈçºÎÈ·ÈϲåÈë˳Р......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ