Hi all,
I've found an old query which I'm trying to understand. I've a question about the FROM part. I understand that the temporary table is a key-valuepair. But I don't understand what happens in the from part. Because it returns the dutch names of the week (created in the key-valuepair), but why? The query looks like this:
WITH
days AS (
SELECT "map"(ARRAY['Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday'],
ARRAY['Zondag','Maandag','Dinsdag','Woensdag','Donderdag','Vrijdag','Zaterdag']) "dagen"
)
SELECT
, "date"("tabel1"."datumtijd") "date"
, "dagen"["date_format"("date"("tabel1"), '%W')] "days"
FROM
days
, "tabel1"
LEFT JOIN "tabel2 "ON (....
