Partitioning
Hello,
I am using partitioning with around 100 sub-tables. Each sub-table is around 11GB and partitioned on the 'id' column. I have an index on the id column on each sub-table.
Is it possible to get a query like the following working using constraint exclusion, or am I doomed to do index/sequential scans of every sub-table?
I want to select all rows which have an id which is in another query, so something like:
WITH idlist as (SELECT id from othertable)
SELECT id from mastertable WHERE id = idlist.id);
I am guessing that I am not getting constraint exclusion to work as the planner doesn't know the outcome of my subquery at plan time?
Any tricks I am overlooking?
James Sewell,
PostgreSQL Team Lead / Solutions Architect
______________________________________
PostgreSQL Team Lead / Solutions Architect
______________________________________
The contents of this email are confidential and may be subject to legal or professional privilege and copyright. No representation is made that this email is free of viruses or other defects. If you have received this communication in error, you may not copy or distribute any part of it or otherwise disclose its contents to anyone. Please advise the sender of your incorrect receipt of this correspondence.
В списке pgsql-general по дате отправления: