sqlserver:openrowset / oracle:table/view@dblinkÃû
Ö»ÊÇsqlserver ÌṩµÄÔ¶³ÌÊý¾Ý·ÃÎʺ¯Êý; ÔÚ±¾µØsqlserver ÖÐÈ¡ÍⲿÊý¾ÝÔ´Êý¾Ýʱºò¿ÉÓÃ;
¶ÔÁ¬½Ó±¾µØ oracle ²Ù×÷Ô¶³Ì oracle ²»ÄÜʹÓÃ; ²âÊÔ: pl/sql ÖÐʹÓÃ:
select * from openrowset(................); ÎÞЧ!!!!!!!!!!!!!!
ÔÚoracle ÖÐÐèÒª·ÃÎÊÔ¶³ÌÊý¾Ý,ÐèÒª½¨Á¢Ò»Á¬½ÓÔ¶³Ìoracle µÄ dblink ;
ÔÙÓÃÈçÏ·½Ê½½øÐзÃÎÊ
select * from hyhr.view_qj_salary@dblink_hydata.us.oracle.com
Ïà¹ØÎĵµ£º
SQLserverÖÐÓÃconvertº¯Êýת»»ÈÕÆÚ¸ñʽ
2008-01-23 15:47
SQLserverÖÐÓÃconvertº¯Êýת»»ÈÕÆÚ¸ñʽ2008-01-15 15:51SQLserverÖÐÓÃconvertº¯Êýת»»ÈÕÆÚ¸ñʽ
SQL ServerÖÐÎİæµÄĬÈϵÄÈÕÆÚ×Ö¶Îdatetime¸ñʽÊÇyyyy-mm-dd Thh:mm:ss.mmm
ÀýÈç:
select getdate()
2004-09-12 11:06:08.177
ÕûÀíÁËÒ»ÏÂSQL ServerÀïÃæ¿ÉÄܾ ......
SqlserverÖÐCompute By×Ó¾äÓ÷¨·ÖÎö
2007Äê04ÔÂ20ÈÕ ÐÇÆÚÎå 08:05
ʹÓÃCompute by×Ó¾äºÍÐÐͳ¼Æº¯Êý£¨count,sum,max,avg,minµÈ£©£¬¿ÉÒÔͳ¼ÆÅÅÐòÖнá¹ûÍêÈ«ÏàͬµÄÁУ¬Í³¼ÆÖµ×÷Ϊ²éѯ½á¹ûÒÔ¸½¼ÓÐеÄÐÎʽÏÔʾ£¬
Óï·¨£ºCompute avg|count|max|min|sum by ±í´ïʽ
1¡¢¾ÙÒ»¸öÀý×Ó
±ÈÈçÓÐÒ»¸öÊý¾Ý±í£º±íÃûΪperson,Èý¸ö×ֶηֱð ......
Oracle±Ê¼Ç
l ¹ØÓÚTRUNCº¯Êý
SELECT
RELATED_ID ,
DOC_ID ,
CAT_ID ,
CAT_CODE ,
RELEASE_DATE ,
&n ......
Êýѧº¯Êý
ÔÚoracle ÖÐdistinct¹Ø¼ü×Ö¿ÉÒÔÏÔʾÏàͬ¼Ç¼ֻÏÔʾһÌõ
¡¡¡¡1.¾ø¶ÔÖµ
¡¡¡¡S:select abs(-1) value
¡¡¡¡O:select abs(-1) value from dual
¡¡¡¡2.È¡Õû(´ó)
¡¡¡¡S:select ceiling(-1.001) value
¡¡¡¡O:select ceil(-1.001) value from dual
¡¡¡¡3.È¡Õû£¨Ð¡£©
¡¡¡¡S:select floor(-1.001) value
......
1.Ñ¡Ôñ×îÓÐЧÂʵıíÃû˳Ðò(Ö»ÔÚ»ùÓÚ¹æÔòµÄÓÅ»¯Æ÷ÖÐÓÐЧ)¡¡¡¡
¡¡¡¡ SQLSERVERµÄ½âÎöÆ÷°´ÕÕ´ÓÓÒµ½×óµÄ˳Ðò´¦Àífrom×Ó¾äÖеıíÃû£¬Òò´Ëfrom×Ó¾äÖÐдÔÚ×îºóµÄ±í£¨»ù´¡±ídriving table£©½«±»×îÏÈ´¦Àí£¬ÔÚfrom×Ó¾äÖаüº¬¶à¸ö±íµÄÇé¿öÏ£¬±ØÐëÑ¡Ôñ¼Ç¼ÌõÊý×îÉٵıí×÷Ϊ»ù´¡±í£¬µ±SQLSERVER´¦Àí¶à¸ö±íʱ£¬»áÔËÓÃÅÅÐò¼°ºÏ²¢µÄ·½Ê½Á ......