oracleÈ«ÎÄË÷Òý֮ͣÓôʵÄͨÅä·û¹¦ÄÜ
È«ÎÄË÷ÒýÍ£ÓôʵÄÉèÖÃÔÚÇ°ÃæµÄÎÄÕÂÖÐÒѾ½éÉܹýÁË£¬ÕâÀï¼òµ¥ËµÃ÷¼Ç¼һÏÂÍ£ÓôÊÔÚ²éѯʱºòÐèҪעÒâµÄµØ·½¡£
Oracle10gÖУ¬Èç¹û°²×°ÓïÑÔΪÖÐÎÄ£¬Ä¬ÈϵÄLEXERΪCHINESE_VGRAM_LEXER£¬Ä¬ÈϵÄÍ£ÓôÊÓïÑÔҲΪÖÐÎÄ¡£Õâƪͨ¹ý¶Ô±ÈÖÐÎÄ»·¾³ºÍÓ¢ÎÄ»·¾³À´ËµÃ÷Í£ÓôʲéѯµÄһЩÌص㡣
SQL> show user
USER is "MYUSER"
SQL> CREATE TABLE T (ID NUMBER, DOCS VARCHAR2(1000));
Table created.
SQL> INSERT INTO T VALUES (1, 'This example test stopword.');
1 row created.
SQL> INSERT INTO T VALUES (2, 'Oracle9i chinese language environment default stopword are english.');
1 row created.
SQL> COMMIT;
Commit complete.
SQL> CREATE INDEX IND_T_DOCS ON T(DOCS) INDEXTYPE IS CTXSYS.CONTEXT;
Index created.
SQL> SELECT * from T WHERE CONTAINS(DOCS, 'This') > 0;
no rows selected
Ó¢ÎÄ»·¾³ÏÂÔÊÐíµ¥¶À²éѯͣÓôʣ¬µ«ÊDz»»á·µ»Ø½á¹û¡£
SQL> SELECT * from T WHERE CONTAINS(DOCS, 'are english') > 0;
ID DOCS
--- --------------------------------------------------
2 Oracle9i chinese language environment default stop
word are english.
SQL> SELECT * from T WHERE CONTAINS(DOCS, 'is english') > 0;
ID DOCS
--- --------------------------------------------------
2 Oracle9i chinese language environment default stop
word are english.
SQL> SELECT * from T WHERE CONTAINS(DOCS, 'stopword are english') > 0;
ID DOCS
--- --------------------------------------------------
2 Oracle9i chinese language environment default stop
word are english.
SQL> SELECT * from T WHERE CONTAINS(DOCS, 'stopword is english') > 0;
ID DOCS
--- --------------------------------------------------
2 Oracle9i chinese language environment default stop
word are english.
SQL> SELECT * from T WHERE CONTAINS(DOCS, 'are stopword') > 0;
ID DOCS
--- --------------------------------------------------
1 This example test stopword.
2 Oracle9i chinese language environment default stop
word are english.
SQL> SELECT * from T WHERE CONTAINS(DOCS, '
Ïà¹ØÎĵµ£º
ORACLE±¸·Ý²ßÂÔ(ORACLE BACKUP STRATEGY)
2007Äê11ÔÂ02ÈÕ ÐÇÆÚÎå 16:03
¸ÅÒª
1¡¢Á˽âʲôÊDZ¸·Ý
2¡¢Á˽ⱸ·ÝµÄÖØÒªÐÔ
3¡¢Àí½âÊý¾Ý¿âµÄÁ½ÖÖÔËÐз½Ê½
4¡¢Àí½â²»Í¬µÄ±¸·Ý·½Ê½¼°ÆäÇø±ð
5¡¢Á˽âÕýÈ·µÄ±¸·Ý²ßÂÔ¼°ÆäºÃ´¦
Ò»¡¢Á˽ⱸ·ÝµÄÖØÒªÐÔ
¿ÉÒÔ˵£¬´Ó¼ÆËã»úϵͳ³öÊÀµÄÄÇÌìÆ𣬾ÍÓÐÁ˱¸·ÝÕâ¸ö¸ÅÄ ......
Ò»¡£jobµÄÔËÐÐƵÂÊÉèÖÃ
1.ÿÌì¹Ì¶¨Ê±¼äÔËÐУ¬±ÈÈçÔçÉÏ8:10·ÖÖÓ£ºTrunc(Sysdate+1) + (8*60+10)/24*60
2.ToadÖÐÌṩµÄ£º
ÿÌ죺trunc(sysdate+1)
ÿÖÜ£ºtrunc(sysdate+7)
ÿÔ£ºtrunc(sysdate+30)
ÿ¸öÐÇÆÚÈÕ£ºnext_day(trunc(sysdate),'SUNDAY')
ÿÌì6µã£ºtrunc(sysdate+1)+6/24
°ë¸öСʱ£ºsysdate+30/1440
3.ÿ¸ö ......
¡¾IT168 ¼¼ÊõÎĵµ¡¿Ëæ×ÅÍøÂçÓ¦Óú͵ç×ÓÉÌÎñµÄ²»¶Ï·¢Õ¹£¬¸÷¸öÕ¾µãµÄ·ÃÎÊÁ¿Ô½À´Ô½´ó£¬ÈçºÎʹÓÐÏ޵ļÆËã»úϵͳ×ÊԴΪ¸ü¶àµÄÓû§·þÎñ£¿ÈçºÎ±£Ö¤Óû§µÄÏìÓ¦ËٶȺͷþÎñÖÊÁ¿£¿ÕâЩÎÊÌⶼÊôÓÚ·þÎñÆ÷ÐÔÄÜÓÅ»¯µÄ·¶³ë¡£×÷Ϊ½Ï³É¹¦µÄÊý¾Ý¿â³§ÉÌ£¬Oracle¹«Ë¾Êý¾Ý¿âµÄÐÔÄÜÓÅ»¯ÊÇÈçºÎ½øÐеÄ
¡¡¡¡ ÓÅ»¯²ßÂÔ
¡¡¡¡ ΪÁ˱£Ö¤OracleÊý ......
Oracle Text¹¦ÄÜÊ®·ÖÇ¿´ó£¬¿ªÊ¼Ñ§Ï°£¬Ö÷Òª²Î¿¼
yangtingkun
µÄblogºÍÎĵµ½øÐС£
µÚÒ»²½ÏȸãÇå³þdatastoreµÄÀàÐÍ¡£
DATASTOREµÄÀàÐÍÈçÏ£º
DIRECT_DATASTORE
MULTI_COLUMN_DATASTORE
DETAIL_DATASTORE
FILE_DATASTORE
NESTED_DATASTORE
URL_DATASTORE
USER_DATASTORE
ÏÂÃæ¾Í¸÷ÖÖÀàÐͽøÐвâÊÔ£¬DIRECT_DATASTOREÊ ......