SELECT Num1 + Num2 FROM mytable ; WHERE Num1 + Num2 IN ; (select Num2+Num1 from mytable ) ; UNION ; SELECT Num1 + Num2 FROM mytable ; WHERE Num2 + Num1 IN ; (select Num1+Num2 from mytable ) ; INTO CURSOR crsList DELETE FROM mytable ; WHERE num1+num2 in ( ; SELECT Num1+Num2 FROM crsList)> Do I need to input ?nValue each time to delete ? the fact I have thousand