国产av无码专区亚洲av果冻传媒,91在线亚洲综合在线,国产精品亚洲αv天堂无码

锘??xml version="1.0" encoding="utf-8" standalone="yes"?>国产av无码专区亚洲av果冻传媒,91在线亚洲综合在线,国产精品亚洲αv天堂无码http://www.tkk7.com/rox/category/14726.htmlzh-cnWed, 28 Feb 2007 06:49:05 GMTWed, 28 Feb 2007 06:49:05 GMT60mysql 5.X 榪佺Щlinux涓婏紝琛ㄥ悕澶у皬鍐欐晱鎰熼棶棰橈紒http://www.tkk7.com/rox/archive/2007/01/29/96432.htmlroxroxMon, 29 Jan 2007 01:40:00 GMThttp://www.tkk7.com/rox/archive/2007/01/29/96432.htmlhttp://www.tkk7.com/rox/comments/96432.htmlhttp://www.tkk7.com/rox/archive/2007/01/29/96432.html#Feedback0http://www.tkk7.com/rox/comments/commentRss/96432.htmlhttp://www.tkk7.com/rox/services/trackbacks/96432.html
濡倀est搴撲笅user琛紝鍦╳indows涓?mysql_home%\data\test\user.frm錛寃indows鏂囦歡鍚嶅ぇ灝忓啓涓嶆晱鎰燂紝
鏃犺鏄?select * from test.user 榪樻槸 select * from test.USER錛岄兘鏄病鏈夐棶棰樼殑銆?br />
鑰屽湪linux涓?var/lib/mysql/test/user.frm錛?br />濡傛灉鏄?select * from test.user 灝卞繀欏誨瓨鍦?user.frm
濡傛灉鏄?select * from test.USER 灝卞繀欏誨瓨鍦?USER.frm
榪欐槸涓や釜涓嶅悓鐨勬枃浠訛紝涔熸槸涓や釜涓嶅悓鐨勮〃鍚嶃€?br />鍚屾牱搴撳悕鏄互鐩綍瀛樺湪錛屼篃瀛樺湪鍖哄垎澶у皬鍐欑殑闂銆?br />
鐩稿叧鐨勫畼鏂規枃妗?

http://dev.mysql.com/doc/refman/5.1/en/identifier-case-sensitivity.html

http://dev.mysql.com/doc/refman/5.1/zh/language-structure.html#name-case-sensitivity

rox 2007-01-29 09:40 鍙戣〃璇勮

]]>MySql涓泦鍚堣繍綆楅潪甯歌瀹炵幇http://www.tkk7.com/rox/archive/2006/09/01/67008.htmlroxroxFri, 01 Sep 2006 01:29:00 GMThttp://www.tkk7.com/rox/archive/2006/09/01/67008.htmlhttp://www.tkk7.com/rox/comments/67008.htmlhttp://www.tkk7.com/rox/archive/2006/09/01/67008.html#Feedback0http://www.tkk7.com/rox/comments/commentRss/67008.htmlhttp://www.tkk7.com/rox/services/trackbacks/67008.html浣嗘槸瀵逛簬浜ら泦Intersect銆佸樊闆咵xcept錛屽氨娌℃湁瀹炵幇浜嗐€?br />涓€鑸殑瑙ｅ喅鏂規鐢╥n鍜宯ot in鏉ヨВ鍐籌紝灝忛噺鏁版嵁榪樺彲浠ワ紝浣嗘暟鎹噺澶т簡鏁堢巼灝卞緢浣庝簡銆?br />鍏跺疄錛屽彲浠ヤ嬌鐢║nion鏉ュ疄鐜板彟澶栦袱縐嶇殑榪愮畻錛屽綋鐒舵槸娌℃湁鍔炴硶鐨勫姙娉曘€?br />
宸泦Except:
SELECT ID FROM (
SELECT DISTINCT A.AID AS ID FROM TABLE_A A
UNION ALL
SELECT DISTINCT B.BID AS ID FROM TABLE_B B
)TEMP GROUP BY ID HAVING COUNT(ID) = 1

浜ら泦Intersect:
SELECT ID FROM (
SELECT DISTINCT A.AID AS ID FROM TABLE_A A
UNION ALL
SELECT DISTINCT B.BID AS ID FROM TABLE_B B
)TEMP GROUP BY ID HAVING COUNT(ID) = 2

涓嶈繃錛屼笂榪版柟娉曠殑鍔熻兘涔熸湁闄愶紝
鍙兘鐢ㄦ潵媯€鏌ユ煇涓猧d鏄笉鏄疉銆丅琛ㄤ腑閮藉瓨鍦紝
鎴栬€呭彧瀛樺湪浜嶢銆丅琛ㄥ叾涓箣涓€錛?br />騫朵笉鑳藉id鍦ㄦ煇琛ㄤ腑澶氭鍑虹幇鍋氬嚭媯€鏌ャ€?br />鑰屼笖錛屽樊闆嗘槸鏈夊厛鍚庝箣鍒嗭紝榪欓噷娌℃湁銆?br />

rox 2006-09-01 09:29 鍙戣〃璇勮