Hello,
I have encountered unanticipated behaviour with a JSONB operator, and wanted to make sure I am not misunderstanding its intended use.
When using the @> operator, I get this result.
select '{"a": [1]}'::jsonb @> '{"a": []}'::jsonb;
?column?
----------
t
(1 row)
?column?
----------
t
(1 row)
However, given the phrasing in the documentation, I would have expected False.
"Does the left JSON value contain the right JSON path/value entries at the top level?"
Particularly given the following:
select '[1]'::jsonb = '[]'::jsonb;
?column?
----------
f
(1 row)
?column?
----------
f
(1 row)
So the keys are the same, the values (when compared directly) are not, but @> returns True. Have I misunderstood the usage of the operator?
The above queries have been run on postgres 14, if that helps.
--
Brian Mendoza
brian@xxxxxxxxxxxRotamap
www.rotamap.net
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