调试时的一些记录

原创于 2012-08-24 16:07:54 发布 · 1.2k 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#archive #360 #c

其他学习笔记同时被 3 个专栏收录

99 篇文章

订阅专栏

Discuz

71 篇文章

订阅专栏

Mysql

22 篇文章

订阅专栏

SELECT COUNT(*) FROM pre_common_member;
SELECT COUNT(*) FROM pre_common_member_archive;
SELECT COUNT(*) FROM pre_common_connect_guest;

 pre_common_member 1345014951
 pre_common_member_archive 1336097717
 
 select * from pre_common_member A , pre_common_member_archive B where A.username=B.username 
 
 select c.* from pre_common_member A , pre_common_member_archive B,pre_common_member_count C where A.username!=B.username 
 
 367
1551
276