¹ØÓÚoracle rownumµÄÒ»¸ösqlÓï¾ä¡£¡£ - Oracle / ¿ª·¢
¿´ÏÂÃæsqlÓï¾ä£¬ÎÒÏëÓà rw À´ÊµÏÖ´Ón-mµÄ½ØÈ¡ select * from(select times,pages,rownum rw from layouts) where times='20090105' order by pages asc; ½á¹ûÊÇ£º times pages rw 20090105 A001 96 20090105 A002 97 20090105 A003 98 . . Ϊʲôrw²»ÊÇ´Ó1¿ªÊ¼µÄ£¿ÒÔÖÁÓÚÎÒÔÚwhereºóÃæÓà rw>=10 and rw<=20µÄʱºòûÓÐÖµ¡£¡£¡£
½âÎö: 1¡¢¡°ÎªÊ²Ã´rw²»ÊÇ´Ó1¿ªÊ¼µÄ£¿¡± select times,pages,rownum rw from layouts ³öÀ´µÄ½á¹û¼¯Ò»¶¨ÊÇ times pages rw XXXXXXXX XXXX 1 XXXXXXXX XXXX 2 XXXXXXXX XXXX 3 ... 20090105 A001 96 20090105 A002 97 20090105 A003 98 ... È»ºóÄãÔÙtimes='20090105',½á¹û¼¯ÀïÃærwµ±È»Ö»ÓÐÊÇÂú×ãÌõ¼þµÄ½á¹ûÁË¡£ 2¡¢¡°ÒÔÖÁÓÚÎÒÔÚwhereºóÃæÓà rw>=10 and rw<=20µÄʱºòûÓÐÖµ¡± Õâ¸öÐÞ¸Äһϣ¬½«times='20090105'·Åµ½×Ó²éѯÖоͿÉÒÔÁË¡£ select * from(select times,pages,rownum rw from layouts where times='20090105') Ï£Íû¶ÔÄãÓÐËù°ïÖú ÒòΪÕâÀï°´pagesÅÅÐòÁË£¬ËùÒÔrw²¢²»ÊÇ´Ó1¿ªÊ¼£¬rownumÊÇÔÚorderby֮ǰ¸³ÓèµÄαÁÐ ÎÒÒ²¸ã²»ÇåÂ¥Ö÷×´¿ö£¬ ÊÇÏñÂ¥ÉÏ1¡¢Àï˵µÄÂð£¿ÒýÓà ½âÎö: 1¡¢¡°ÎªÊ²Ã´rw²»ÊÇ´Ó1¿ªÊ¼µÄ£¿¡± select times,pages,rownum rw from layouts ³öÀ´µÄ½á¹û¼¯Ò»¶¨ÊÇ times pages rw XXXXXXXX XXXX 1 XXXXXXXX XXXX 2 XXXXXXXX XXXX 3 ... 20090105 A001 96 20090105 A002 97 20090105 A00¡¡ Î
Ïà¹ØÎÊ´ð£º
´ó¼ÒºÃ,ÎÒÏÖÔÚ°Ñoracle·þÎñÆ÷ÉÏÃæµÄÔʼÎļþ,ÏÂÔØµ½±¾»úÁË.ÎÒÏëÔÚ±¾»ú·ÃÎÊÊý¾Ý¿âÔõôÉèÖð¡.ÊDz»ÊÇÀàËÆ¿ÉÒÔ½¨Á¢Ò»¸öʲôÐéÄâ·þÎñÆ÷À´ÊµÏÖ.Çë´ó¼Ò³ö³öÖ÷Òâ ÒýÓà ´ó¼ÒºÃ,ÎÒÏÖÔÚ°Ñoracle·þÎñÆ÷ÉÏÃæ ......
¼ÙÉètable01 ÖÐÓÐ ÒÔÏÂ×ÊÁÏ emp_no emp_name ------- ------------ 0001 TOM 0002 JOHN 0003 MARY ³£Óõ绰 ¶øÎÒÃÇÒªµÃµ½ÒÔϵÄOUTPUT (»òÊǸ÷ÖÖÆäËûµÄoutput) 0001,TOM 0002,JOHN
......
sqlµÄÈí¼þÔÚÄÄÀï¿ÉÒÔϰ¡£¡ÔÚÍøÉÏÕÒÁËÂù¶à¶¼Óò»Á˰¡ Ëæ±ã¸ãÒ»D°æ°É£¬ ѸÀ×µÚÒ»¸ö¾Í¿ÉÒÔÓà 2000,2005¶¼ÕâÑù http://119.147.41.16/down?cid=0698C2D64D7D637D90A6D2482298E6717D4F15CD&t=2&fmt=-1 ......
ORACLEÅàѵ(OCA)ÈÏÖ¤½éÉÜ Oracle10g Certified Associate (OCA) Oracle ÈÏ֤רԱ¡£ ¿¼ÊԳɼ¨Í¨¹ýÄÜ»ñµÃOracle¹«Ë¾ÎªÄú°ä·¢µÄÈ«ÇòÈÏÖ¤µÄÓ¢ÎÄOCAÖ¤Êé¡£OCAÓÉOracle¹«Ë¾³öÌâ¡£ ¸ÃÖ¤Êé¿É×÷Ϊ¸÷ÆóÊÂÒµµ¥Î»Êý¾Ý¿ ......