Doc: improve documentation of the JSON object aggregates.

Say which value wins for a repeated key, and how skipped null values
interact with that and with the unique check.  Also point out that
duplicate keys behave differently for json and jsonb cases.  (I still
think that's a bug, but at least now it's documented.)

Author: shihao zhong <[email protected]>
Reviewed-by: Tom Lane <[email protected]>
Discussion: 
https://postgr.es/m/CAGRkXqTCfSu=aEUCvKDTGroEWOcyz3MCv4Xi8x1PZ1T1rEmG=q...@mail.gmail.com
Backpatch-through: 14

Branch
------
REL_16_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/947c1675699c0704732b99b69c51c7cde85cd1a6

Modified Files
--------------
doc/src/sgml/func.sgml | 17 ++++++++++++-----
1 file changed, 12 insertions(+), 5 deletions(-)

Reply via email to