On Tue, Feb 14, 2017 at 09:24:47PM -0800, Joshua Chamberlain wrote: > Hello, > > (I'm posting to hackers since I got no response on the general > list.) > > I use Postgres + PostGIS quite heavily, and recently have been > taking full advantage of the new parallelism in 9.6. I'm now running > queries in a few hours that would otherwise take more than a day. > > However, parallelism is disabled for all queries that perform writes > (as documented). I would normally run "CREATE TABLE AS [some > super-expensive query]", but since that can't use parallelism I'm > using the \o option in psql, creating the table separately, and then > \copy-ing in the results. That works, but "CREATE TABLE AS" would > be more convenient.
How about creating a temp view? CREATE TEMPORARY VIEW foo_tv AS [your gigantic query goes here]; CREATE TABLE foo (LIKE foo_tv); INSERT INTO foo SELECT * FROM foo_tv; > Are there plans in 10.0 to allow parallelism in queries that write, > or at least in "CREATE TABLE AS" queries? (Support in materialized > views would be great, too!) Patches are always welcome, and there's one more commitfest to go before 10. Best, David. -- David Fetter <david(at)fetter(dot)org> http://fetter.org/ Phone: +1 415 235 3778 AIM: dfetter666 Yahoo!: dfetter Skype: davidfetter XMPP: david(dot)fetter(at)gmail(dot)com Remember to vote! Consider donating to Postgres: http://www.postgresql.org/about/donate -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
