pgsql: Doc: spell out comparison behaviors for the date/time types.

Doc: spell out comparison behaviors for the date/time types.

The behavior of cross-type comparisons among date/time data types was
not really explained anywhere.  You could probably infer it if you
recognized the applicability of comments elsewhere about datatype
conversions, but it seems worthy of explicit documentation.

Per bug #16797 from Dana Burd.

Discussion: https://postgr.es/m/16797-f264b0b980b53b8b@postgresql.org

Branch
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REL9_5_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/7fe23c8bb5d2de892796594a66bc7a3292c6302c

Modified Files
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doc/src/sgml/func.sgml | 15 +++++++++++++++
1 file changed, 15 insertions(+)