Hi,
I have this :
SELECT date_trunc('month', f.date_creation) as mois, sum(f.montant_ttc / d.taux) as facture, (SELECT
sum(f2.montant_ttc/ d2.taux) as facture2 FROM facture AS f2 JOIN devise AS d2 USING (id_devise) WHERE
date_trunc('month',f2.date_creation) <= date_trunc('month', f.date_creation))
FROM facture AS f JOIN devise AS d USING (id_devise)
GROUP BY date_trunc('month', f.date_creation)
which does not work... telling me that
"Sub-SELECT uses un-GROUPed attribute f.date_creation from outer query"
Which is not really true, but some way is...
What I want is to get the sum of the month, and the sum of the month and
the previous.
If someone has a clue, something, anything... :)
--
Mathieu Arnold