If we pass an ARRAY of json type to array_to_json() function, the
function seems to
re-encode the JSON text. But should the following examples be the same result?
I'm not sure why we don't have a special case for json type in datum_to_json()
-- do we need to pass-through json types in it?
=# \x
=# SELECT '["A"]'::json,
array_to_json(ARRAY['A']),
array_to_json(ARRAY['"A"'::json]);
-[ RECORD 1 ]-+----------
json | ["A"]
array_to_json | ["A"]
array_to_json | ["\"A\""]
--
Itagaki Takahiro
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