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

From: Ken Kato <katouknl(at)oss(dot)nttdata(dot)com>
To: pgsql-hackers(at)lists(dot)postgresql(dot)org
Subject: [PATCH] Add min() and max() aggregate functions for xid8
Date: 2022-02-03 07:45:17
Message-ID: 47d77b18c44f87f8222c4c7a3e2dee6b@oss.nttdata.com
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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

Attachment Content-Type Size
min_max_aggregates_for_xid8_v1.patch text/x-diff 4.8 KB

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