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

Çë½ÌÒ»¸ösqlÊý¾ÝɸѡÎÊÌâ

ÓÐ×Ö¶Î
ÈÕÆÚ£¬id

ÈÕÆÚ²»Öظ´£¬id ÓÐÖØ¸´

ÐèҪɸѡ³ö ÿ¸öidÀïÃæÈÕÆÚ×îÔçµÄÊý¾Ý¡£
SQL code:
select * from ±í t where not exists(select 1 from ±í where t.ÈÕÆÚ>ÈÕÆÚ and id=t.id)


SQL code:
select id,min(ÈÕÆÚ) from tb group by id


ÉÏÃæÁ½¸ö¶¼ÐÐ

ÒýÓÃ
ÓÐ×Ö¶Î
ÈÕÆÚ£¬id

ÈÕÆÚ²»Öظ´£¬id ÓÐÖØ¸´

ÐèҪɸѡ³ö ÿ¸öidÀïÃæÈÕÆÚ×îÔçµÄÊý¾Ý¡£

select min(ÈÕÆÚ) ÈÕÆÚ , id from tb group by id

select id,min(ÈÕÆÚ) from tb group by id


Ïà¹ØÎÊ´ð£º

ÈçºÎÓÃc#£¬sql2000 ¿ª·¢c/sÏµĹ¤×÷Á÷£¿

±¾ÈËc#ÐÂÊÖ ¿ÉÊÇÒªÇóÒªÓÃc# £¬sql2000¿ª·¢c/sµÄ¹¤×÷Á÷£¬Ò»Í·ÎíË®£¬Çë´ó¼Ò°ïæ°ï棬¸øµã˼·£¬ËµµÄÔ¼¾ßÌåÔ½ºÃ£¬ÎÒÒ²ºÃÍùÄǸö·½ÃæÈ¥Ñ§Ï°
http://www.hxzi.com/view/61402.html
B/S°æµÄ£¬»ù±¾Ë¼ÏëÓ¦¸Ã²î²»¶àµÄ¡£¡£ ......

sql ʱ¼äÎÊÌâ

sql table±íÓиöÎı¾ÀàÐ͵Äa×ֶΣ¬´æ´¢µÄÄÚÈÝÈ«²¿ÊÇÊý×Ö£¬ÀýÈç2009001£¬2008578ÕâÑùµÄ¸ñʽ£»b×Ö¶ÎÎı¾ÀàÐÍ£¬´æµÄÒ²ÊÇÊý×ÖÀýÈç 001£¬123
aspÀïÃæ strday=100£¬strb=001

ÎÒÏë¶Á³ö£¬´Óa×ֶεÄÊý×Ö°´´óµ½Ð¡µÄË ......

ÇóSQL£¿

´ó¼ÒºÃ£¬ÇëÎÊÔÚ±íMÖÐÓÐ×ֶΣºa b c d e 
ÎÒÏë²é³öÆäÖÐÂú×ãÏÂÃæÈÎÒâÒ»ÏîµÄÊý¾Ý£¬1.×Ö¶Îa µÄÖµ²»ÊÇ ¡®Êé»ò±Ê»ò±¾¡¯ÖÐÈÎÒ»£¬2.aΪÊéµÄʱºò×Ö¶Îb,cÊÇ¿Õ;3.µ±aֵΪ±ÊµÄʱºòdÊÇ¿Õ;4.µ±aΪ±¾µÄʱºòb,d,e¶¼ÊÇ¿Õ;5.È ......

sql²éѯÒÉÎÊ

±íÖа´datadate,tradeidΪÖ÷¼ü£¬Ò²¾ÍÊÇ˵tradeid»áÖØ¸´³öÏÖÔÚ²»Í¬ÌìÖУ¬Í¬Ò»ÌìµÄtradeidÊDz»Í¬µÄ¡£ÏÖÔÚÎÒÏ£Íûȡһ¶Îʱ¼ä·¶Î§ÄÚ²»Öظ´µÄtradeid£¬ÇÒֻҪÿ¸ötradeidµÄ×îºóÒ»´Î³öÏÖµÄÄÇÌõ¡£sqlÓï¾ä¸ÃÔõôд

£º ......

SQL²éѯÎÊÌâÇó½Ì£¿


select a.fyear,b.fname,
'1ÔÂ'=case when fperiod=1 then sum(a.fendbal) else 0 end ,
'2ÔÂ'=case when fperiod=2 then sum(a.fendbal) else 0 end ,
'3ÔÂ'=case when fperi ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ