-- Name: is_explainable(text); Type: FUNCTION; Schema: util; Owner: -

--

CREATE FUNCTION is_explainable(sql text) RETURNS boolean

    LANGUAGE sql IMMUTABLE

    AS $_$

SELECT upper(util.first_word($1)) = ANY(

'{SELECT,INSERT,UPDATE,DELETE,VALUES,EXECUTE,DECLARE}'::text[]

/*from http://www.postgresql.org/docs/9.3/static/sql-explain.html#AEN77691*/

)

$_$;

--