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

doc: clarify handling of range upper/lower/upper_inf/lower_inf() Clarify handling of infinite range bounds. Reported-by: jani.rahk...@iki.fi Discussion: https://postgr.es/m/160508672127.25505.8356390205508789...@wrigleys.postgresql.org Co-authored-by: Laurenz Albe Backpatch-through: 16 Branc

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

doc: clarify handling of range upper/lower/upper_inf/lower_inf() Clarify handling of infinite range bounds. Reported-by: jani.rahk...@iki.fi Discussion: https://postgr.es/m/160508672127.25505.8356390205508789...@wrigleys.postgresql.org Co-authored-by: Laurenz Albe Backpatch-through: 16 Branc