Hi,
I've got Your mail, Thanks a lot.
Here a example of my SQL command
SELECT V_thop_b.ten_bao,;
MIN(V_thop_b.ck_from+V_thop_b.to_dk+V_thop_b.dauky-V_thop_b.cuoiky,;
V_thop_b.dauky,V_thop_b.cuoiky);
FROM fabaco!v_thop V_thop_b;
WHERE V_thop_b.ck_from >= 1;
AND V_thop_b.to_dk >= 1;
GROUP BY V_thop_b.ten_bao

When I add expression MIN(,,) to selected field, I always get "MIN(,,)" in selected field (View designer put function MIN into "", even if I type MIN(2,1) and add to selected fields) . Can You help me. Thanks very much. Phuong