"Adam Kolany" <dr(dot)a(dot)kolany(at)wp(dot)pl> writes:
> can you explain this?
> ======================================================
> stoff=> select sum(wplyw),sum(wydatek), sum(wplyw)-sum(wydatek) from
> rachunki where okres<6;
> sum | sum | ?column?
> -------+---------+----------
> 73745 | 6712.55 | 67032.5
> (1 row)
Seems odd, but you haven't provided nearly enough information to let
anyone else reproduce the problem.
regards, tom lane