Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

mysqlÇøÃ»¸ßÊÖ - MS-SQL Server / »ù´¡Àà

ÎÒ¾õµÃmysqlºÍsqlserverÓй²Í¬µÄµØ·½£º
ÓиöÎÊÌâÊǹØÓÚ±íµÄËøÎÊÌ⣺
½ø³ÌA ½ø³ÌB
select * from user where id in lock share mode£¨¹²ÏíËø)


  update user set name='55' where id=1£¨´ËÊ±Ëø×¡µÈ´ýA£©
 
update user set name='66' where id=1£¨Õâ¸öʱºò»á³öÏÖËÀËø)
   
  ¸üгɹ¦


Èç¹û»»³Éɾ³ýµÄ»°¾Í²»»á³öÏÖËÀËø×´Ì¬£¬B»áµÈ´ýAÌá½»ºóɾ³ý
Èç¹û½«select»»ÎªÅÅËûËøµÄ»°B»áµÈ´ýAÌá½»ºó¸üÐÂ
ÊéÖнâÊÍÊÇBÓÉÓÚÎÞ·¨»ñÈ¡¹²ÏíËøËùÒÔ·ÅÈë¶ÓÁУ¬A´ËʱupdateÓë¶ÓÁеÄBµÄupdate³åÍ»Ôì³ÉËÀËø£¬
ÎÒÈÏΪµÄÊÇBÓ¦¸ÃÔÚAÌá½»ºó²Å½øÐиüвÙ×÷£¬´ËʱΪʲô²¢Ã»ÓÐÌá½»¾Í»á·¢Éú³åÍ»ÄØ£¿¶øselectÉèΪÅÅËûËø¾Í²»»á
¹²ÏíËøÓëÅÅËûËø»¹ÓÐʲôԭÀíÄØ£¿Ð»Ð»
Èç¹ûÊÇsql server,Ôò²Î¿¼ÏÂÃæµÄһЩÎÄÕÂ.
SQL code:
1 ÈçºÎËøÒ»¸ö±íµÄijһÐÐ

A Á¬½ÓÖÐÖ´ÐÐ

SET TRANSACTION ISOLATION LEVEL REPEATABLE READ

begin tran

select * from tablename with (rowlock) where id=3

waitfor delay '00:00:05'

commit tran

BÁ¬½ÓÖÐÈç¹ûÖ´ÐÐ

update tablename set colname='10' where id=3 --ÔòÒªµÈ´ý5Ãë

update tablename set colname='10' where id<>3 --¿ÉÁ¢¼´Ö´ÐÐ

2 Ëø¶¨Êý¾Ý¿âµÄÒ»¸ö±í


Ïà¹ØÎÊ´ð£º

Çë½ÌsqlÓï¾ä¡£ - Oracle / ¿ª·¢

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 ......

sql - MS-SQL Server / ÒÉÄÑÎÊÌâ

sqlµÄÈí¼þÔÚÄÄÀï¿ÉÒÔϰ¡£¡ÔÚÍøÉÏÕÒÁËÂù¶à¶¼Óò»Á˰¡

Ëæ±ã¸ãÒ»D°æ°É£¬

ѸÀ×µÚÒ»¸ö¾Í¿ÉÒÔÓÃ
2000,2005¶¼ÕâÑù

http://119.147.41.16/down?cid=0698C2D64D7D637D90A6D2482298E6717D4F15CD&t=2&fmt=-1 ......

PHP+MYSQLÊý¾Ý¼¯´¦Àí - PHP / »ù´¡±à³Ì

1¡¢ÊDz»ÊÇPHPÖÐÖ»ÄÜʹÓÃmysql_query("update user_aa set money=money2-".$bpanmm." where uid=".$userppp);¸üÐÂÊý¾Ý£¿£¿£¿
2¡¢PHP¸üÐÂmysql_fetch_row($res)Óëmysql_fetch_array($res)ÖеÄÊý¾ ......

SQLÓï¾äÎÊÌâ - MS-SQL Server / ÒÉÄÑÎÊÌâ

Çë½Ì¸ßÊÖ£º
 ÒÔÏÂÊÇÊý¾Ý¿âÖеÄÈýÌõ¼Ç¼£¬Ó¢ÎÄΪ×Ö¶ÎÃû³Æ  
  id planname TaskBeginTime Status
329 2010Äê03 ......

myeclipse+mysqlµÄÅäÖÃÎÊÌâ - Java / Eclipse

ÎÒÊǸöÐÂÊÖ£¬Íû¸ßÊÖ½â´ð
ÎÒÏÖÔÚÒѾ­°²×°ÁËmysql£¬Ò²ÓÐmysqlµÄjdbc¡£µ«ÎÒÔõôÅäÖú󣬲ÅÄÜÔÚMyEclipseÀï²Ù×÷mysqlÄØ£¿Çë¸ßÊÖ˵Ïêϸµã
´ò¿ªMyeclipse----window---open perspective---MyEclipse database explorer-- ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ