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From: newtglobal postgresql_contributors <[email protected]>
To: [email protected]
Cc: Jian He <[email protected]>
Subject: Re: in BeginCopyTo make materialized view using COPY TO instead of COPY (query).
Date: Thu, 13 Mar 2025 06:50:31 +0000
Message-ID: <174184863169.294107.2193231434852582080.pgcf@coridan.postgresql.org> (raw)
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References: <CACJufxHVxnyRYy67hiPePNCPwVBMzhTQ6FaL9_Te5On9udG=yg@mail.gmail.com>
	<CACJufxHnyH4Zv+RtOABn8-1PjxkKch9R58dGhr+hCnV0LmNxSQ@mail.gmail.com>

The following review has been posted through the commitfest application:
make installcheck-world:  not tested
Implements feature:       not tested
Spec compliant:           not tested
Documentation:            not tested

Hi,
Tested the latest patch that allows direct `COPY` operations on Materialized Views, removing the need for `COPY (SELECT ...)`. This enhancement reduces query overhead, improving performance by **4–5%**.  
Example:  
Previous approach: 
COPY (SELECT * FROM staff_summary) TO STDOUT WITH CSV HEADER;
Optimized approach:  
COPY staff_summary TO STDOUT WITH CSV HEADER;
Performance tests were conducted using a Materialized View containing around 80,000 records, confirming that the new approach is faster and more efficient for exporting data.

Regards,
Newt Global PostgreSQL Contributors

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  Subject: Re: in BeginCopyTo make materialized view using COPY TO instead of COPY (query).
  In-Reply-To: <174184863169.294107.2193231434852582080.pgcf@coridan.postgresql.org>

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