mysql 错误内连接

Question

I used a query like

select a.email,b.vuid 
from user a
,inner join group b on a.uid = b.uid 
where a.email='xx@xx.de' and a.kid=1 and b.vid=29 
limit 1

but I always get this error.

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'inner join group b on a.uid = b.uid where a.email='xx@xx.de' at line 1

I think its because the inner join but I don't know really.. Could someone help me?

Answer 1

Remove the , after from user a .

Your query should be:

select a.email,b.vuid
from user a
inner join group b
on a.uid = b.uid
where a.email='xx@xx.de'
    and a.kid=1 
    and b.vid=29
limit 1

Answer 2

select a.email,b.vuid from user as a inner join group as b on ...

Of course you can omit the as keyword as demonstrated by @FrustratedWithFormsDesigner but in my opinion it is much more readable this way.