On 12-7-2014 15:57, Łukasz Bączek [email protected] [firebird-support] wrote: > Hello, > I have a SQL query: > > > SELECT > CASE WHEN umowy.numer_umowy IS NULL THEN 0 END AS numer_umowy > FROM umowy > WHERE umowy.data_podpisania IS NOT NULL AND umowy.id_wnioski IN > (SELECT CASE WHEN wnioski.id_wnioski IS NULL THEN 0 END AS id_wnioski > FROM wnioski > LEFT JOIN kategorie_wnioskow ON > kategorie_wnioskow.id_kategorie_wnioskow=wnioski.id_kategorie_wnioskow > WHERE kategorie_wnioskow.id_kategorie_wnioskow_typ=1) AND umowy.rok=2014 > > How do I stop if "NUMER_UMOWY" is NULL is returned to "0" and not null
I have read this question multiple times, but I don't understand what you mean. Could you give an example of data and the result you want to have? Mark -- Mark Rotteveel
