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From: Ron <ronljohnsonjr@gmail.com>
To: pgsql-admin <pgsql-admin@lists.postgresql.org>
Subject: What to watch out for when ALTERing NUMERIC(38,0) to BIGINT?
Date: Thu, 28 Jul 2022 10:13:10 -0500
Message-ID: <a4465ae0-574a-1727-fcdd-1dac49b874c0@gmail.com> (raw)

AWS RDS Postgresql 12.10


We've got tables with columns of data type NUMERIC(38,0) which are a legacy 
from an Oracle migration.

Besides what's mentioned in 
https://www.postgresql.org/docs/12/ddl-alter.html#id-1.5.4.8.10, what 
happens *internally* when I run:
ALTER TABLE foo ALTER COLUMN bar TYPE BIGINT;

I'm thinking mostly of record fragmentation.

-- 
Angular momentum makes the world go 'round.

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