Ahh, the subqueries -
On Tue, Jan 15, 2019 at 5:59 PM David G. Johnston <
david.g.johns...@gmail.com> wrote:
> On Tue, Jan 15, 2019 at 9:52 AM Alexander Farber
> <alexander.far...@gmail.com> wrote:
> >> So calculate the average somewhere else, put the result in a column,
> >> and then reference that column in the SET clause.
> >
> > do you suggest to add a second CTE?
>
> That would qualify as "somewhere else" - as would a simple subquery in
> FROM.
>
they escaped my mind for some reason! :-)
WITH diffs AS (
SELECT
gid,
uid,
played - LAG(played) OVER(PARTITION BY gid ORDER BY played) AS diff
FROM moves
WHERE uid = 1
)
UPDATE users SET avg_time =
(
SELECT
AVG(diff)
FROM diffs
GROUP BY uid
)
WHERE uid = 1;
https://www.db-fiddle.com/f/w1AYGpoZiWW9bLCYjHDk7H/1
seems to work, thank you
