Document strange jsonb sort order for empty top level arrays
Slightly faulty logic in the original jsonb code (commit d9134d0a355)
results in an empty top level array sorting less than a json null. We
can't change the sort order now since it would affect btree indexes over
jsonb, so document the anomaly.
Backpatch to all live branches (13 .. 17)
In master, also add a code comment noting the anomaly.
Reported-by: Yan Chengpen
Reviewed-by: Jian He
Discussion: https://postgr.es/m/OSBPR01MB45199DD8DA2D1CECD50518188E272@OSBPR01MB4519.jpnprd01.prod.outlook.com
Branch
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REL_14_STABLE
Details
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https://git.postgresql.org/pg/commitdiff/9577dd523b3e3bb7fba66e708dfb9ca76e299b7e
Modified Files
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doc/src/sgml/json.sgml | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)