BUG #19451: In postgreSQL v13 For 1000 tables how to update from rrn column to GUID. Each table more than 2crore

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To: pgsql-bugs(at)lists(dot)postgresql(dot)org
Cc: abichchal123(at)gmail(dot)com
Subject: BUG #19451: In postgreSQL v13 For 1000 tables how to update from rrn column to GUID. Each table more than 2crore
Date: 2026-04-06 17:26:40
Message-ID: 19451-e229547a8d37468b@postgresql.org
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The following bug has been logged on the website:

Bug reference: 19451
Logged by: Amarnath Bichchal
Email address: abichchal123(at)gmail(dot)com
PostgreSQL version: Unsupported/Unknown
Operating system: ubuntu
Description:

In postgreSQL v13 For 1000 tables how to update from rrn column to GUID.
Each table more than 2crores records. What is strategy use with no any
issues , performance, lock , need to fast complete in 2hrs to 3hrs. use
uninx script

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