Tom Lane <t...@sss.pgh.pa.us> writes: > Simplify plpgsql's check for simple expressions. > ... > https://git.postgresql.org/pg/commitdiff/00418c61244138bd8ac2de58076a1d0dd4f539f3
The buildfarm members that are running force_parallel_mode = regress are not happy with this. Apparently, even a trivial SELECT <expression> can be turned into a Gather plan if force_parallel_mode says so. I assume (haven't looked) that I could hack the plpgsql code to prevent generating a parallel plan when it's decided the command is a simple SELECT. But I wonder whether that's the right place to fix it. Does it ever make sense to parallelize a plan that can't possibly benefit? IOW I am not sure that we should carry force_parallel_mode this far. regards, tom lane -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers