From here:
https://www.postgresql.org/docs/10/static/functions-json.html
select * from json_populate_record(null::myrowtype, '{"a": 1, "b": ["2",
"a b"], "c": {"d": 4, "e": "a b c"}}')
What is the null::myrowtype doing?
Thanks,
--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com