pgsql: doc: Document factorial function

From: Peter Eisentraut <peter(at)eisentraut(dot)org>
To: pgsql-committers(at)lists(dot)postgresql(dot)org
Subject: pgsql: doc: Document factorial function
Date: 2020-06-16 03:14:52
Message-ID: E1jl23o-00072Q-Ib@gemulon.postgresql.org
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doc: Document factorial function

This has existed for a very long time, equivalent to the ! and !!
operators, but it was never documented.

Reviewed-by: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Discussion: https://www.postgresql.org/message-id/flat/6ce1df0e-86a3-e544-743a-f357ff663f68%402ndquadrant.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/4c5cf5431410f8e28fb855c892cb2880649df850

Modified Files
--------------
doc/src/sgml/func.sgml | 17 +++++++++++++++++
1 file changed, 17 insertions(+)

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