Postgres: support CREATE FUNCTION

[gregwebs]

Platform

• OS: macOS (probably all)
• RDBMS: PostgreSQL
• Version: v0.15.12

--export output

Input SQL

CREATE FUNCTION public.alphanumericstring(character varying) RETURNS character varying
    LANGUAGE sql
    AS $_$
	SELECT REGEXP_REPLACE($1, '[^a-zA-Z0-9]+', '', 'g')
$_$;

Current output

found syntax error when parsing DDL "CREATE FUNCTION public.alphanumericstring(character varying) RETURNS character varying
    LANGUAGE sql
    AS $_$
	SELECT REGEXP_REPLACE($1, '[^a-zA-Z0-9]+', '', 'g')
$_$": syntax error at position 16 near 'FUNCTION'

Expected output

none