Re: Emitting JSON to file using COPY TO

This would be a very special case for COPY. It applies only to a single 
column of JSON values. The original problem can be solved with psql 
--tuples-only as David wrote earlier.


$ psql -tc 'select json_agg(row_to_json(t))
              from (select * from public.tbl_json_test) t;'

  [{"id":1,"t_test":"here's a \"string\""}]


Special-casing any encoding/escaping scheme leads to bugs and harder 
parsing.

Just my 2c.

--
Filip Sedlák