SELECT xldata  && That table contains Field4
SET RELATION TO Key INTO nan [ADDITIVE]&& if you mean "KEY" PK ,i don't have any pk at my tables.

GO TOP
REPLACE ALL a WITH nan.a,;
            b WITH nan.b,;
            c WITH nan.c,;
            d WITH nan.d,;
            e WITH nan.e,;
            f WITH nan.f,;
            s WITH nan.s,;
            l WITH nan.l,;
            char9 WITH nan.char9,;
            char10 WITH nan.char10,;
            char11 WITH nan.char11,;
            char12 WITH nan.char12,;
            char13 WITH nan.char13,;
            char14 WITH nan.char14,;
            char15 WITH nan.char15,;
            char16 WITH nan.char16,;
            char17 WITH nan.char17,;
            char18 WITH nan.char18,;
            char19 WITH nan.char19
SET RELATION OFF


thanks.
best regards.
m.qasem