# Re: Help me! SQL inner join problem

Posted by DCU on October 12, 1998 at 19:44:02:

In Reply to: Re: Help me! SQL inner join problem posted by AndyLin on October 12, 1998 at 11:45:30:

: : 我有三个table以 inner join 产品名称作为关联，因每个table均有数值，
: : 所以均以 select sum(数值) 取出栏位，并group by 产品，但是以此作出之
: : 查询合计数均错误，应是资料笔数乘数的错误，请各位高明指较解决之道，
: : 谢谢！

: 查查看在 join 过程中是否有多对多之情形

AndyLin I'm appreciate for your help,Many thanks agn.

Follow Ups: