如何对多个表做内联？？？

[True1024]

例如有 3 个表 内联的 条件 是 UserID 如何做？

下面是两个表的内联。三个表呢？
select * from table1 as a inner join table2 as b on a.userid = b.userid

[skyinfo]

SELECT T1.*,T2.*,T3.*
FROM T1
INNER JOIN T2 ON T2.userid=T1.userid
INNER JOIN T3 ON T3.userid=T1.userid

INER JOIN .....ON ......