=跟*=有什么不同?
有一SQL语句:
Select   a.fID,a.fCode,a.fName,a.fColor,a.fSpec,a.fLevel,b.fQty,c.fQty
from   tProduct   a,tPurchasePlanning   b,vPOUnSubmitQty   c
where   a.fID   =   b.fResID
    and   a.fID   *=   c.fResID
执行后,有数据显示,但把最后一项中的 "*= "改为 "= "却没有数据显示,不知 "*= "的含义是什么?
望指点.
谢谢!

------解决方案--------------------
改為


Select a.fID,a.fCode,a.fName,a.fColor,a.fSpec,a.fLevel,b.fQty,c.fQty
from tProduct a Inner Join tPurchasePlanning b On a.fID = b.fResID
Left Join vPOUnSubmitQty c On a.fID = c.fResID