Re: Locking

Simon Attwell writes:

> How does postgresql deal with locking when one has a large select query running
> on a > 700,000 row table, when there are inserts pending for that table.

The insert and select can happen in parallel.  See
http://www.postgresql.org/users-lounge/docs/7.0/postgres/mvcc.htm for the
gory details.

> I have an application that does a _lot_ of inserts, and a frontend that
> makes large long laborious select queries on the same tables.
>
> MySQL has the INSERT DELAYED which allows batch processing of inserts and
> allows clients to receive and instant "OK" when doing inserts.

No, PostgreSQL doesn't cheat.

--
Peter Eisentraut      peter_e@gmx.net       http://yi.org/peter-e/