>Can these codes change into sql.
>

>
>sele res
>SET ORDER TO CODE
>GO TOP
>DO WHILE .NOT. EOF()
>IF PERC>=80 .AND. PERC<=100
>	REPL GRADE WITH "A+"
>ENDIF
>IF PERC>=70 .AND. PERC<79.99
>	REPL GRADE WITH "A"
>ENDIF
>.............
>

You can do it in two SQLs such as:

UPDATE Res SET Grad="A+" WHERE Perc>=80 AND Perc<=100
UPDATE Res SET Grad="A" WHERE Perc>=70 AND Perc<=79.9

But, there is a way to do it in one command. Maybe someone else will contribute.