id url rank ranktime addtime
2 google.cn 1 2010-4-4 11:42:13 2010-4-6 11:42:13
3 baidu.cn 2 2010-4-4 11:42:13 2010-4-6 11:42:13
4 sina.cn 3 2010-4-4 11:42:13 2010-4-6 11:42:13
5 baidu.cn 1 2010-4-5 11:42:13 2010-4-6 11:42:13
6 sina.cn 2 2010-4-5 11:42:13 2010-4-6 11:42:13
7 google.cn 3 2010-4-5 11:42:13 2010-4-6 11:42:13
8 sina.cn 1 2010-4-6 11:42:13 2010-4-6 11:42:13
9 baidu.cn 2 2010-4-6 11:42:13 2010-4-6 11:42:13
Ïà¹ØÎÊ´ð£º
ÎÒÓÐÒ»¸ö±í£¬½á¹¹ÊÇÕâÑù¡£
ת³ö µ¥Î» תÈ뵥λ ±ÊÊý ½ð¶î
date(Ö÷) outid(Ö÷) inid(Ö÷) num amt
2009 1 2 1 500 Ϊ 1 µ¥Î» ÔÚ2009Ä ......
½ñÌì×öÁËÒ»¸ö´æ´¢¹ý³Ì »·¾³ÊÇSQL2000Êý¾Ý¿â
´óÖÂÈçÏÂ
½¨Á¢ÁÙʱ±í
¶¨ÒåÔ±¹¤Óαê
Ñ»·Ô±¹¤£¨ÊôÓÚ1¸ö¹«Ë¾)
......
sqlserver2005 ½¨Á¢µÄÊý¾Ý¿â£¬ÓëÊÖ³Öpda´«ÊäÊý¾Ý£¬×î½üͻȻ³öÏÖÎÞ·¨´«µÝÊý¾ÝµÄÎÊÌ⣬pda¶ËÌáʾµÄ´íÎóʱoutofmemoryexception£¬µ«ÊÇpdaÉÏÃæµÄÈÝÁ¿Ã»ÓÐÎÊÌ⣬
sqlserverµÄÈÕ×ÓÉϵĴíÎóÈçÏ£º
ÈÕÆÚ 2010-1-25 14:45: ......
¸Õ¸Õ½Ó´¥MySQL,²»ÖªµÀ¸ÃÈçºÎÈ¥²é¿´Êý¾Ý£¬²åÈëÊý¾Ý£¬´´½¨Êý¾Ý¿â¡¢±í£¬ÓÃÄÄΪǰ±²ÄÜÖ¸½ÌÒ»¶þ£¿
MySQL 5.1²Î¿¼ÊÖ²á
ÒýÓÃ
ÐÖµÜÄã»á½áÌùÂð£¿
mysql ²Î¿¼ÊÖ²á
baidu
MySQL¹Ù·½Îĵµ http://dev.mysql.com/doc ......
update test set qty = qty - 1 where (location,sku,valid_date)
in (select location,sku,min(valid_date) from test
where location = 'chuwei' and item_code = '5678' group by location,sku)
ÒÔÉÏÓï ......