longclaps

Сменить Mongo на Postgres не проблема.

postgres=# show data_directory;
       data_directory        
-----------------------------
 /var/lib/postgresql/10/main
(1 row)

SELECT *
FROM tbl
WHERE id BETWEEN 5 AND 10
ORDER BY id;

CREATE OR REPLACE FUNCTION checkPermission(TEXT, TEXT)
  RETURNS SETOF BOOLEAN AS
$$
BEGIN
  RETURN QUERY SELECT $1
                      &&
                      $2;
END;
$$ LANGUAGE plpgsql;