oracle µÄ left/right joinÓë(+)µÄÒ»¸öÇø±ð
»ù±¾´ÓÀ´²»ÓÃleft/right join
Ò»¸öÏîÄ¿±»ÆÈÒªÓñðÈËдµÄ sql
±¾´òËã¸ÄдһÏ£¬Ìá¸ßЧÂÊ
·¢ÏÖ£º
¡¾1¡¿
select * from a
left outer join b on a.id= b.id AND ...1...
where ...2...
Óë
¡¾2¡¿
select * from a , b
where a.id= b.id(+)
AND ...1...
AND ...2...
µÄÒ»¸öÇø±ð£º¡¾1¡¿ÀïµÄbÏ൱ÓÚ(select b.* where...1...)
Ïà¹ØÎĵµ£º
Èí¼þÏÂÔØ
µ½http://www.oracle.com/technology/software/tech/oci/instantclient/htdocs/winsoft.htmlÏÂÔØÈçÏÂÈý¸ö°ü£º
instantclient-basic-win32-11.1.0.7.0.zip
instantclient-jdbc-win32-11.1.0.7.0.zip
instantclient-sqlplus-win32-11.1.0.7.0.zip
½«ÕâÈý¸ö°ü·Ö±ð½âѹ£¬È»ºóÄÚÈݷŵ½D:\instantclient_11_1ÏÂ
......
²»¿ÉÒÔÓñ£Áô×Ö×öΪ±íÃû£¬×Ö¶ÎÃûµÄ¡£
Èç¹ûÓõ¥¸öÓ¢Óïµ¥´Ê»ò´Ê×éÀ´±íʾ±íÃû»ò×Ö¶ÎÃû¡£Õâ±È½ÏÈÝÒ׺ͱ£Áô×Ö³åÍ»¡£ÈçºÎÖªµÀOracleÓÃÁËÄÄЩ±£Áô×ÖÄØ£¿
ϵͳ±ív$reserved_wordsÖдæ·ÅÁËËùÓеı£Áô×Ö¡£
select * from v$reserved_words;
OracleÓÐ500¸ö±£Áô×Ö£¬¼ÇסËùÓеı£Áô×ÖÓеãÀ§ÄÑ£¬Ã¿´Î¶¼²éÕÒ»áÓ°Ïìµ½¿ª·¢ËÙ¶È£¬Èç ......
Ò». ÓйØRACµÄÏà¹Ø¸ÅÄî
RAC:È«³ÆÊÇReal Application Cluster¡£RAC²¢·ÇÊǸöм¼Êõ£¬ÆäǰÉí½ÐOPS(Oracle Parallel Server)£¬´Ó9i¿ªÊ¼²Å¸ÄÃû½ÐRAC,oracle Data GuardÔÚ9i֮ǰ½Ð×öStandby
¸ÃÌåϵʵÏÖÁ˶à¸öʵÀýͬʱ·ÃÎʺ͹ÜÀíͬһÊý¾Ý¿â£¬¶à¸öʵÀý¿ÉÒÔ´æÔÚÓÚ²»Í¬½Úµã£¬Ò²¿ÉÒÔÔÚÏàͬµÄ½Ú ......
²ã´Î»¯²éѯ£º
select [level],colomn,...from table
[where where_clause]
[ [start with start_condition] [connect by prior prior_condition]&nbs ......
1. ×¼±¸¹¤×÷
°Ñ¾ÉµÄORACLEËùÓÐÎļþ¶¼COPY±¸·ÝÏÂÀ´,ɾ³ý¾ÉĿ¼,ÔÙÖØÐ°²×°ORACLE,Ŀ¼ºÍ¾ÉĿ¼һÑù(Èç¹û²»Ò»Ñù,ÒªÐ޸ĵĵط½±È½Ï¶à).Ö»°²×°ORACLE,²»´´½¨Êý¾Ý¿â¡£Òª»Ö¸´µÄʵÀýΪORCL ¡£
2.ÓÃÃüÁʽ£¬Í¨¹ýÒª¾ÉµÄORAÎļþ´´½¨ÐµÄʵÀýORCL
a) oradim -new -sid ORCL£¨´´½¨ÊµÀý£ ......