语源科技BlogJava-miao in javahttp://www.blogjava.net/miao/zh-cnSun, 12 Apr 2026 15:17:31 GMTSun, 12 Apr 2026 15:17:31 GMT60oracle update fromhttp://www.blogjava.net/miao/archive/2009/06/25/284119.html肖雪肖雪Thu, 25 Jun 2009 07:45:00 GMThttp://www.blogjava.net/miao/archive/2009/06/25/284119.htmlhttp://www.blogjava.net/miao/comments/284119.htmlhttp://www.blogjava.net/miao/archive/2009/06/25/284119.html#Feedback0http://www.blogjava.net/miao/comments/commentRss/284119.htmlhttp://www.blogjava.net/miao/services/trackbacks/284119.htmlUPDATE (SELECT /*+ BYPASS_UJVC */ sys_users.DEPARTMENT_ID sysvalue,v_users.DEPARTMENT_ID vvalue FROM sys_users,v_users WHERE sys_users.ID=v_users.person_id and v_users.DEPARTMENT_ID != sys_users.DEPARTMENT_ID) SET sysvalue=vvalue

 

 

/*+ BYPASS_UJVC */ 是oracle的一种写法，大意是跳过唯一性检查，强制执行更新。如果没有这一段，可能无法执行这条sql。当然加上这一段就有可能对同一条记录更新多次，特定情况下会有不可预知的影响。

 

 

如何相连接的表之间有主外键关系。则不需要增加/*+ BYPASS_UJVC */  。否则，oracle会报错.



肖雪 2009-06-25 15:45 发表评论
]]>Apache+Tomcat集群和负载均衡及Session绑定http://www.blogjava.net/miao/archive/2009/04/11/265056.html肖雪肖雪Sat, 11 Apr 2009 14:41:00 GMThttp://www.blogjava.net/miao/archive/2009/04/11/265056.htmlhttp://www.blogjava.net/miao/comments/265056.htmlhttp://www.blogjava.net/miao/archive/2009/04/11/265056.html#Feedback0http://www.blogjava.net/miao/comments/commentRss/265056.htmlhttp://www.blogjava.net/miao/services/trackbacks/265056.html阅读全文

肖雪 2009-04-11 22:41 发表评论
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