join,group by,sum,多表联接汇总，复杂的Join语句

whileselect ItemId,sum(Qty), sum(QtySec), WrkCtrID, InventSizeId, ConfigId, InventcolorId, UnitId, UnitIdSec

from _NJ_WIP GroupBy ItemId ,WrkCtrID, InventSizeId, ConfigId, InventcolorId, UnitId, UnitIdSec

join Prodid,ACT_ProdCancelId,SalesId, CustAccount, DlvDate

from _prodTable groupby Prodid,ACT_ProdCancelId,SalesId, CustAccount, DlvDate

where _NJ_WIP.WrkCtrId like "01c2"

&& _NJ_WIP.ProdId == _ProdTable.ProdId

static void calculateCommission(Args _args)
{
InventTable             inventTable;
CustInvoiceTrans        custInvoiceTrans;
;
while select CommissionGroupId from inventTable group by CommissionGroupId
join sum(LineAmount) from custInvoiceTrans
where
custInvoiceTrans.itemId == inventTable.ItemId &&
custInvoiceTrans.invoiceId == "U000033"
{
.......
}
}