pl/sqlÎÊÌâ
Ò»ÕÅdept±íÔõôȡǰÎå¸ö£¿
rownum <=5 ÐèÒª°´ÕÕijÌõ¼þÅÅÐò²»£¿ ²»ÐèÒª£¬Ôò£º select * from dept where rownum <=5; ÐèÒª£¬Ôò£º select * from (select select t.*, ROWNUM rn from dept order by xxx asc|desc) where rn <=5 select * from dept where rowid <6 ´ò´íÁË rownumÒýÓà ÐèÒª£¬Ôò£º select * from (select select t.*, ROWNUM rn from dept order by xxx asc|desc) where rn <=5 ÕâÖÖȡǰ5λÊÇÓÐÎÊÌâµÄ£¬ÒªÔÙ¼ÓÒ»²ãǶÌ×,ÒòΪrownum ÅÅÐò±Èorder by ÏÈ×ö select * from (select t.*,rownum rn from (select select * from dept order by xxx asc|desc) t) where rn <=5ÒýÓà SQL codeselect*from deptwhere rownum<=5;ÒýÓà ÒýÓà 2 Â¥ suiziguo µÄ»Ø¸´:ÐèÒª£¬Ôò£º select * from (select select t.*, ROWNUM rn from dept order by xxx asc|desc) where rn <=5 ÕâÖÖȡǰ5λÊÇÓÐÎÊÌâµÄ£¬ÒªÔÙ¼ÓÒ»²ãǶÌ×,ÒòΪrownum ÅÅÐò±Èorder by ÏÈ×ö select * from (select t.*,rownum rn from (select select * from dept order by xxx asc|desc) t) where rn <=5 Nice£¡ ллָ½Ì£¡ÒýÓà ÒýÓà 2 Â¥ suiziguo µÄ»Ø¸´:ÐèÒª£¬Ôò£º select * from (select select t.*, ROWNUM rn from dept order by xxx asc|desc) where rn <=5 ÕâÖÖȡǰ5λÊÇÓÐÎÊÌâµÄ£¬ÒªÔÙ¼ÓÒ»²ãǶÌ×,ÒòΪrownum ÅÅÐò±Èorder by ÏÈ×ö select * from (se
Ïà¹ØÎÊ´ð£º
type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception org.apache.jas ......
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 ......
СµÜ£¬×î½üҪתÐÐÈ¥×öoracle¿ª·¢ÁË£¬ÓÉÓÚ´óѧ±Ïҵʱ£¬×ßÁ˸öÍä·£¬ÏÖÔÚºÜСÐÄ£¬ÎÊÏ£¬×öPL/SQLÓÐûÓÐǰ;£¿£¿£¿ µ±È»ÎÒ˵µÄÕâ¸öǰ;ÊÇÖ¸ ÒÔºóÒªÌø²Û£¬Êг¡¶ÔÕâÑùµÄÈ˲ŵÄÐèÇóÁ¿´ó²»´ó£¿£¿ 3q ÄÇ¿´À´»¹Ö»ÄÜÏȽӴ ......
ÏÖÔÚÓÐÁ½ÕÅ±í£ºÎÄÕÂÖ÷±íA(articleId,articleTitle)£¬ÎÄÕÂÆÀÂÛ±íB(commentId,articleId,commentTitle) ÏÖÔÚÎÒÏëʵÏÖÕâÑùµÄ¹¦ÄÜ£ºÁгöÎÄÕÂÁÐ±í£¬ÆäÖÐÿƪÎÄÕ±êÌâÏÂÃæÁгö´ËÎÄÕµÄǰ2¸öÎÄÕÂÆÀÂÛ£¬ÇëÎÊsqlÓï¾äÔõôд°¡ ......