On Jan 25, 2008 1:06 PM, Marcin Krawczyk <jankes.mk@gmail.com> wrote: > Hi all. I am trying to determine the way to pass a variable/field value to > an age() function, query looks something like: > > SELECT age(timestamp data_zakonczenia_fakt) FROM kip_pracownicy_umowy WHERE > id_pracownika = 8 > > data_zakonczenia_fakt being char column equal to say '1993-11-30'. > Such approach won't work, can anyone tell me the way to do it? > > SELECT age(timestamp '1993-11-30') works great. > Same story with age(timestamp '2008-01-01', timestamp '1993-11-30').
You need an explicit cast:
SELECT age(data_zakonczenia_fakt::timestamp) FROM kip_pracownicy_umowy WHERE id_pracownika = 8
