Davide S <swept.along.by.events@xxxxxxxxx> writes: > This is a small testcase that reproduces the problem on my machine. Ah, I see it: json_agg_finalfn is violating the rule that an aggregate final function can't scribble on the aggregate state. Will fix, thanks for the report! regards, tom lane -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general