On Sat, Feb 20, 2021 at 11:46 AM Alexander Farber < alexander.far...@gmail.com> wrote:
> Then I have to split the query in 3 similar ones (with same condition)? > > I try: > > SELECT > JSONB_AGG(TO_CHAR(finished, 'YYYY-MM-DD')) AS day > FROM words_games > WHERE finished > CURRENT_TIMESTAMP - INTERVAL '2 week' > GROUP BY day > ORDER BY day; > ERROR: aggregate functions are not allowed in GROUP BY > LINE 2: JSONB_AGG(TO_CHAR(finished, 'YYYY-MM-DD')) A... > ^ > That's a whole different misunderstanding of aggregates that you are seeing. I mis-spoke in the prior response though. Its not that you only get one column of an aggregate function per select - you only get to use a single aggregate in each expression in a select/group-by. array_agg(sum(...)) is two aggregates in a single expression. David J.
