group by的测试

 
 
select * from pmw_diymenu group by parentid
 
 

select count(*) from pmw_diymenu group by parentid

 

 
 
 

posted @ 2013-03-25 16:52  天道酬勤，坚持！  阅读(221)  评论(0)  编辑  收藏  举报