>hi i've a big proble i wich make union to 2 fields logicals how i make this example.
>
>field a l
>field b l
>
>select a+b from table1
>
>but that instruction make a proble . tks.

You can't add two logical fields like that. Depending on what you want to achieve, you might select one of the following:

select a and b as BothFields && .T. if both are .T.
select a or b as AnyField && .T. if any of the two, or both, are true
select iif(a, "X", "-") + iif(b, "X", "-") as TextResult
  && text representation, with "X" for true, and "-" for false