SELECT Nz([CUST_ORDER_ID],'n/a') AS cust_ord, IIf([TYPE]="O",[QTY],[QTY]*-1) AS Expr1, SYSADM_DEG_FISCAL_YEAR.FISCAL_YEAR, SYSADM_INVENTORY_TRANS.WORKORDER_BASE_ID, SYSADM_PART.ID, SYSADM_PART.DESCRIPTION, IIf([cust_ord]='n/a',[Expr1]=0,[Expr1]) AS Expr2
FROM (SYSADM_INVENTORY_TRANS INNER JOIN...