>Hi friends:
>
>This is what I always wanted to do but I've never got it.
>
>Anyone can tell me what is the correct way for "grouping by" in a SELECT SQL command?
>
>I tried FROM field table, INTO CURSOR field and 1 (result column field) and none of them worked.
>
>This is just one of my tests:
>
> SELECT SUBSTR(f850nfac,2,4) as cpues, f850grav as cgrav, f850ivai as civai, f850exen as cexen, f850tota as ctota, .t. as celijo ;
> FROM &ivaventa WHERE LEFT(DTOS(f850ffac),6)==thisform.peri GROUP BY CPUES NOCONSOLE INTO CURSOR cpuesto
>
>Thank you.
>
> Héctor


All fields, that are not listed in GROUP BY clause, must be in any aggregate function.

So, your query will be

>   SELECT SUBSTR(f850nfac,2,4) as cpues, f850grav as cgrav, f850ivai as civai, f850exen as cexen, SUM(f850tota) as ctota, .t. as celijo ;
>          FROM &ivaventa WHERE LEFT(DTOS(f850ffac),6)==thisform.peri GROUP BY 1,2,3, NOCONSOLE INTO CURSOR cpuesto