Õâ¸öSQLÔõôд£¿
Á½¸ö±í£¬Table1,Table2 Table1ÖзŵÄÊÇÔ±¹¤µÄ»ù±¾ÐÅÏ¢£¬Table2ÖзŵÄÊÇÔ±¹¤µÄÔ»ù±¾¹¤×Ê£¬ËûÃǶ¼ÓÐÏàͬµÄÓû§Ãû±ÈÈçUsername£¬ ÏÖÔÚҪȡ³öÔ¹¤×ÊÊý´óÓÚ2000µÄÔ±¹¤µÄ»ù±¾ÐÅÏ¢µÄ¼Ç¼£¬Õâ¸öSQLÔõôд£¿
SQL code: select Table1.username from Table1 inner join Table2 on Table1.username=Table2.username where Table2.¹¤×Ê>2000ÒýÓà SQL codeselect Table1.usernamefrom Table1innerjoin Table2on Table1.username=Table2.usernamewhere Table2.¹¤×Ê>2000 Õý½â SQL code: select Table1.username,ÆäËû»ù±¾ÐÅÏ¢ from Table1,Table2 where (Table2.¹¤×Ê>2000)and(Table1.username=Table2.username) SQL code: select a.* from Ô±¹¤µÄ»ù±¾ÐÅÏ¢ a LEFT JOIN Ô±¹¤µÄÔ»ù±¾¹¤×Ê b ON a.Username = b.Username where b.»ù±¾¹¤×Ê >2000ÒýÓà Á½¸ö±í£¬Table1,Table2 Table1ÖзŵÄÊÇÔ±¹¤µÄ»ù±¾ÐÅÏ¢£¬Table2ÖзŵÄÊÇÔ±¹¤µÄÔ»ù±¾¹¤×Ê£¬ËûÃǶ¼ÓÐÏàͬµÄÓû§Ãû±ÈÈçUsername£¬ ÏÖÔÚҪȡ³öÔ¹¤×ÊÊý´óÓÚ2000µÄÔ±¹¤µÄ»ù±¾ÐÅÏ¢µÄ¼Ç¼£¬Õâ¸öSQLÔõôд£¿ ÓÐÆäËûµÄʲôΨһ±êʾ×Ö¶ÎÂ𣿠{{----
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 ......
´ÓÊý¾Ý¿âÖвéѯһÕűíµÄÊý¾Ý select ²¿ÃÅ,ÐÕÃû from tb ÈçºÎ²ÅÄÜÉú³ÉÏÂÃæµÄxml¸ñʽ XML code: <folder state="unchecked" label="È«²¿"> ¡¡¡¡ <folder state="unchecked&qu ......
ÓÐÁ½¸ö»òÒÔÉϵÄÔ¶³ÌÊý¾Ý¿â£¬ÈçºÎÓÃASP¼ì²âÁ¬½ÓËٶȲ¢Á¬½Ó×î¿ìµÄMSSQLÊý¾Ý¿â£¿ ÓÐÕâÑùµÄASPº¯ÊýÂð£¿ÎÒGOOGLEÁËһϣ¬ÕÒ²»µ½¡£ PHP+MYSQLÏÂÓÐÕâÖÖÀý×Ó£º PHP code: Example: $wgDBservers = array( ......
¸Õ¸Õ½Ó´¥MySQL,²»ÖªµÀ¸ÃÈçºÎÈ¥²é¿´Êý¾Ý£¬²åÈëÊý¾Ý£¬´´½¨Êý¾Ý¿â¡¢±í£¬ÓÃÄÄΪǰ±²ÄÜÖ¸½ÌÒ»¶þ£¿ MySQL 5.1²Î¿¼ÊÖ²á ÒýÓà ÐÖµÜÄã»á½áÌùÂ𣿠mysql ²Î¿¼ÊÖ²á baidu MySQL¹Ù·½Îĵµ http://dev.mysql.com/doc ......
¹ØÓÚSQL Server Mobile Edition ÓÃMicrosoft SQL Server2005 Management Studio Express9.00.3042.00´´½¨SQLCEÊý¾Ý¿âsqlmobile.sdf ÔÚmobileϵͳÖÕ¶ËÉÏÓÃSQL Server Mobile Edition3.0Äܲ鿴sqlmobile.sdfÀï±íÊý¾Ý ......