select Taborders.Id as id,Taborders.OrderCode as t1,Taborders.Prices as xs,C.sum1 as jg,(Taborders.Prices*6.8-C.sum1) as ml,((Taborders.Prices *6.8-C.sum1)/C.sum1*6.8) as ll from Taborders,(select sum(tabsend_child.pro_price) as sum1 from tabsend_child group by tabsend_child.ordercode) C where Taborders.OrderCode=tabsend_child.ordercode and C.sum1>0这个sql出现这个错误,该怎么改 啊:
The column prefix 'tabsend_child' does not match with a table name or alias name used in the query.
The column prefix 'tabsend_child' does not match with a table name or alias name used in the query.
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