ѧϰoracle sql loader µÄʹÓÃ
Ò»£ºsql loader µÄÌØµã
oracle×Ô¼º´øÁ˺ܶàµÄ¹¤¾ß¿ÉÒÔÓÃÀ´½øÐÐÊý¾ÝµÄÇ¨ÒÆ¡¢±¸·ÝºÍ»Ö¸´µÈ¹¤×÷¡£µ«ÊÇÿ¸ö¹¤¾ß¶¼ÓÐ×Ô¼ºµÄÌØµã¡£
±ÈÈç˵expºÍimp¿ÉÒÔ¶ÔÊý¾Ý¿âÖеÄÊý¾Ý½øÐе¼³öºÍµ¼³öµÄ¹¤×÷£¬ÊÇÒ»ÖֺܺõÄÊý¾Ý¿â±¸·ÝºÍ»Ö¸´µÄ¹¤¾ß£¬Òò´ËÖ÷ÒªÓÃÔÚÊý¾Ý¿âµÄÈȱ¸·ÝºÍ»Ö¸´·½Ãæ¡£ÓÐ×ÅËٶȿ죬ʹÓüòµ¥£¬¿ì½ÝµÄÓŵ㣻ͬʱҲÓÐһЩȱµã£¬±ÈÈçÔÚ²»Í¬°æ±¾Êý¾Ý¿âÖ®¼äµÄµ¼³ö¡¢µ¼ÈëµÄ¹ý³ÌÖ®ÖУ¬×Ü»á³öÏÖÕâÑù»òÕßÄÇÑùµÄÎÊÌ⣬Õâ¸öÒ²ÐíÊÇoracle¹«Ë¾×Ô¼º²úÆ·µÄ¼æÈÝÐÔµÄÎÊÌâ°É¡£
sql loader ¹¤¾ßȴûÓÐÕâ·½ÃæµÄÎÊÌ⣬Ëü¿ÉÒÔ°ÑһЩÒÔÎı¾¸ñʽ´æ·ÅµÄÊý¾Ý˳ÀûµÄµ¼Èëµ½oracleÊý¾Ý¿âÖУ¬ÊÇÒ»ÖÖÔÚ²»Í¬Êý¾Ý¿âÖ®¼ä½øÐÐÊý¾ÝÇ¨ÒÆµÄ·Ç³£·½±ã¶øÇÒͨÓõŤ¾ß¡£È±µã¾ÍËٶȱȽÏÂý£¬ÁíÍâ¶ÔblobµÈÀàÐ͵ÄÊý¾Ý¾ÍÓеãÂé·³ÁË¡£
¶þ£ºsql loader µÄ°ïÖú
c:\>sqlldr
sql*loader: release 9.2.0.1.0 - production on ÐÇÆÚÁù 10ÔÂ 9 14:48:12 2004
copyright (c) 1982, 2002, oracle corporation. all rights reserved.
Ó÷¨: sqlldr keyword=value [,keyword=value,...]
ÓÐЧµÄ¹Ø¼ü×Ö:
userid -- oracle username/password
control -- control file name
log -- log file name
bad -- bad file name
data -- data file name
discard -- discard file name
discardmax -- number of discards to allow (È«²¿Ä¬ÈÏ)
skip -- number of logical records to skip (ĬÈÏ0)
load -- number of logical records to load (È«²¿Ä¬ÈÏ)
errors -- number of errors to allow (ĬÈÏ50)
rows -- number of rows in conventional path bind array or between direct p
ath data saves
£¨Ä¬ÈÏ: ³£¹æÂ·¾¶ 64, ËùÓÐÖ±½Ó·¾¶£©
bindsize -- size of conventional path bind array in bytes(ĬÈÏ256000)
silent -- suppress messages during run (header,feedback,errors,discards,part
itions)
direct -- use direct p
Ïà¹ØÎĵµ£º
¾¹ýºÃ¼¸ÌìµÄ·ÜÕ½£¬JDBCÖÕÓڳɹ¦Á¬½ÓÁËSQL Server 2000£¬ÆÚ¼ä×ßÁ˲»ÉÙÍä·£¬ÔÚÕâÀï·ÖÏíÎÒµÄÒ»µã¾Ñé
Ò»¡¢ÎҵĻ·¾³
Windows XP+JDK6u15+Microsoft SQL Server 2000£¨SP4£©+JCreator
ÎÒÏÈÔÚÍøÉÏÏÂÔØÊý¾Ý¿âÇý¶¯³ÌÐò£¬Ä¿Â¼ÏÂÓÐÈý¸ö°ümsbase.jar mssqlserver.jar msutil.jar
1 ......
ÈÕÖ¾´«ËÍÊÇSQL SERVER2000ÆóÒµ°æ½øÐÐË«»úÈȱ¸µÄÒ»¸öÖ÷Òª½â¾ö·½°¸£¬ÆäÔÀí±È½Ï¼òµ¥£¬ÊµÏÖÒ²±È½Ï·½±ã£¬Ö»ÊÇÓÉÓÚºÍWindowsÖ®¼ä´í×Û¸´ÔӵĹØÏµ£¬µ¼ÖÂÉèÖÃÆðÀ´Óв»ÉÙÀ§ÄÑ£¬³öÏÖÎÊÌâÒ²²»ÈÝÒ×Õï¶Ï¡£
1.ʵÏÖ¸ÅÊö
*Ë«»úÈȱ¸Õë¶ÔµÄÊǾßÌåµÄij¸öÊý¾Ý¿â¶ø²»ÊÇÕû¸ö·þÎñÆ÷
Ë«» ......
update anketo1 set fb = substring('10',fb+1,1) WHERE id =5
ºóÀ´ÎÊÁËBM,BM˵ֱ½ÓÈ¡·´
update anketo1 set fb = ~ fb WHERE id =5
ÎÒ¸æËßÁËBMÓÃsubstringÒ²¿ÉÒÔ.
BM˵:"Õâ¼Ò»ïÀ÷º¦£¬ÕâÒ²ÄÜÏë³ö,ÕâÊôÓÚаÃÅÎ书."
×îºóÓÖÏëµ½ÓÃABSÈ¡¾ø¶ÔÖµÒ²¿ÉÒÔ
update anketo1 set fb = abs(fb-1)
ÎÒ¾õµÃ²»¹ÜÊÇʲôÎ书,ÄÜÖ ......
SQLÖеÄʱ¼äº¯Êý·Ç³£ÓÐÓã¬ÌرðÊÇÔÚÎÒÃǽøÐгõʼ¸³Öµ¡¢¸´ÔÓ²éѯµÄʱºò£¬¾ÍÏÔµÃÌØ±ð·½±ã¡£
1¡¢»ñµÃϵͳµ±Ç°Ê±¼ä
select getdate()
2¡¢DateName ( datepart , date )·µ»Ø±íʾָ¶¨ÈÕÆÚµÄÖ¸¶¨ÈÕÆÚ²¿·ÖµÄ×Ö·û´®¡£
--½ñÌìÊÇ2009-2-24--ÐÇÆÚ¶þ
SELECT DATENAME(year, getdate()) AS 'Year&nbs ......