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pgsql: Doc: clarify data type behavior of COALESCE and NULLIF. - Mailing list pgsql-committers

From Tom Lane
Subject pgsql: Doc: clarify data type behavior of COALESCE and NULLIF.
Date
Msg-id E1kcAZG-00042N-1z@gemulon.postgresql.org
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Doc: clarify data type behavior of COALESCE and NULLIF.

After studying the code, NULLIF is a lot more subtle than you might
have guessed.

Discussion: https://postgr.es/m/160486028730.25500.15740897403028593550@wrigleys.postgresql.org

Branch
------
REL9_5_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/7b9cee45ad2ad8529826ef44061e0c4461911024

Modified Files
--------------
doc/src/sgml/func.sgml     | 27 +++++++++++++++++++++++++--
doc/src/sgml/typeconv.sgml | 12 ++++++++----
2 files changed, 33 insertions(+), 6 deletions(-)

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