Re: How to find the final transformed query in postgresql

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Goti <aryan(dot)goti(at)gmail(dot)com>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: How to find the final transformed query in postgresql
Date: 2022-04-18 14:13:03
Message-ID: 2268716.1650291183@sss.pgh.pa.us
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-performance

Goti <aryan(dot)goti(at)gmail(dot)com> writes:
> I would like to know if postgres performs any transformations when it does
> the parsing?

This might be helpful reading:

https://www.postgresql.org/docs/current/overview.html

> If yes, is there a way we can get the final transformed query?

See debug_print_parse and friends [1]. Depending on what you mean by
"final transformed query", you might instead want debug_print_rewritten,
or maybe you want the plan, in which case EXPLAIN is a much friendlier
way to look at it than debug_print_plan.

regards, tom lane

[1] https://www.postgresql.org/docs/current/runtime-config-logging.html#RUNTIME-CONFIG-LOGGING-WHAT

In response to

Responses

Browse pgsql-performance by date

  From Date Subject
Next Message Goti 2022-04-18 14:31:11 Re: How to find the final transformed query in postgresql
Previous Message Goti 2022-04-18 14:02:49 How to find the final transformed query in postgresql