doc: clarify handling of range upper/lower/upper_inf/lower_inf()

Bruce Momjian <bruce@momjian.us>

Commit: 7539a1b2fc839f45a95f66a42939db13629e79a9
Author: Bruce Momjian <bruce@momjian.us>
Date: 2023-11-13T21:08:22Z
Releases: 17.0
doc: clarify handling of range upper/lower/upper_inf/lower_inf()

Clarify handling of infinite range bounds.

Reported-by: jani.rahkola@iki.fi

Discussion: https://postgr.es/m/160508672127.25505.8356390205508789564@wrigleys.postgresql.org

Co-authored-by: Laurenz Albe

Backpatch-through: 16

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doc/src/sgml/func.sgml modified +12 −8

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