+(pg_lsn, int8) and -(pg_lsn, int8) operators

From: Fujii Masao <masao(dot)fujii(at)oss(dot)nttdata(dot)com>
To: pgsql-hackers(at)postgresql(dot)org
Subject: +(pg_lsn, int8) and -(pg_lsn, int8) operators
Date: 2020-04-23 09:21:33
Message-ID: ed9f7f74-e996-67f8-554a-52ebd3779b3b@oss.nttdata.com
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Hi,

I'd like to propose to introduce the +(pg_lsn, int8) and -(pg_lsn, int8)
operators. The + operator allows us to add the number of bytes into pg_lsn,
resulting new pg_lsn. The - operator allows us to substract the number
of bytes from pg_lsn, resulting new pg_lsn. Thought?
I sometimes need these features for debuging purpose.

Attached is the patch implementing those operators.
Of course, this is the dev item for v14.

Regards,

--
Fujii Masao
Advanced Computing Technology Center
Research and Development Headquarters
NTT DATA CORPORATION

Attachment Content-Type Size
pg_lsn_operators_v1.patch text/plain 5.1 KB

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