Horton

[PATCH] Add min() and max() aggregate functions for xid8

Ken Kato <katouknl@oss.nttdata.com>

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From: Ken Kato <katouknl@oss.nttdata.com>
To: pgsql-hackers@lists.postgresql.org
Date: 2022-02-03T07:45:17Z
Lists: pgsql-hackers

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Hi hackers,

Unlike xid, xid8 increases monotonically and cannot be reused.
This trait makes it possible to support min() and max() aggregate 
functions for xid8.
I thought they would be useful for monitoring.

So I made a patch for this.

Best wishes,

-- 
Ken Kato
Advanced Computing Technology Center
Research and Development Headquarters
NTT DATA CORPORATION

Commits

  1. Add min() and max() aggregates for xid8.