RE: How to tune SQL performance of function based columns of a view

Make it a Materialized View with storage and you can index on a column. You can index a MV unlike a regular view.

From: M Sarwar <sarwarmd02(at)outlook(dot)com>
Sent: Sunday, April 7, 2024 9:52 PM
To: Ron Johnson <ronljohnsonjr(at)gmail(dot)com>; pgsql-admin(at)lists(dot)postgresql(dot)org
Subject: [EXTERNAL] Re: How to tune SQL performance of function based columns of a view

Hi Ron,

I have analyzed and vacuumed following 2 tables which are used by the views.

TEK_INSPECTION_LIST_MCM

TEST_PART_DETAILS_ALL_MCM_MID

I am still seeing unacceptable response time.

Is there any other way to tune a SQL which is referring a view?

Thanks,
Sarwar

________________________________
From: Ron Johnson <ronljohnsonjr(at)gmail(dot)com<mailto:ronljohnsonjr(at)gmail(dot)com>>
Sent: Saturday, April 6, 2024 9:58 AM
To: pgsql-admin(at)lists(dot)postgresql(dot)org<mailto:pgsql-admin(at)lists(dot)postgresql(dot)org> <pgsql-admin(at)lists(dot)postgresql(dot)org<mailto:pgsql-admin(at)lists(dot)postgresql(dot)org>>
Subject: Re: How to tune SQL performance of function based columns of a view

Postgresql does auto-vacuum and auto-analyze, so the table might have been analyzed and vacuumed.

Table pg_stat_user_tables records the last time that user tables were vacuumed and analyzed.

On Sat, Apr 6, 2024 at 4:44 AM M Sarwar <sarwarmd02(at)outlook(dot)com<mailto:sarwarmd02(at)outlook(dot)com>> wrote:
This is Pg 13.
It is running on Aws / Rds.
I am not doing any Vacuum/ Analyze manually.
Thanks,
Sarwar

Sent from my Galaxy

-------- Original message --------
From: Ron Johnson <ronljohnsonjr(at)gmail(dot)com<mailto:ronljohnsonjr(at)gmail(dot)com>>
Date: 4/6/24 1:15 AM (GMT-05:00)
To: pgsql-admin(at)lists(dot)postgresql(dot)org<mailto:pgsql-admin(at)lists(dot)postgresql(dot)org>
Subject: Re: How to tune SQL performance of function based columns of a view

On Sat, Apr 6, 2024 at 12:33 AM M Sarwar <sarwarmd02(at)outlook(dot)com<mailto:sarwarmd02(at)outlook(dot)com>> wrote:

Hello,

I am working on SQL performance issue.

1. What PG version?
2. When did you last VACUUM and ANALYZE the base tables?