Hi currently JSON support NULL value - but we doesn't convert NULL to JSON correctly
postgres=# select to_json(NULL::text) IS NULL; ┌──────────┐ │ ?column? │ ╞══════════╡ │ t │ └──────────┘ (1 row) probably should be json "null"; like postgres=# select json 'null' is null; ┌──────────┐ │ ?column? │ ╞══════════╡ │ f │ └──────────┘ (1 row) ? Regards see: http://stackoverflow.com/questions/32283125/why-cant-null-be-converted-to-jsons-null-in-postgresql http://stackoverflow.com/questions/21120999/representing-null-in-json Pavel
