How to perform a raw query using current user mapping credentials

[iosifnicolae2]

SELECT clickhousedb_raw_query(
	'SELECT 1;', 
	(SELECT array_to_string(srvoptions, ' ') FROM pg_foreign_server WHERE oid=(SELECT srvid FROM pg_user_mappings WHERE usename=(SELECT current_user) LIMIT 1)) || ' 
	username=' || (SELECT split_part(umoptions[1], '=', 2) FROM pg_user_mappings WHERE usename=(SELECT current_user) LIMIT 1)||' 
	password=' || (SELECT split_part(umoptions[2], '=', 2) FROM pg_user_mappings WHERE usename=(SELECT current_user) LIMIT 1)||'
	'::text
);

[iosifnicolae2]

@ildus wouldn't be good to use the second parameter of the above query as default value for clickhousedb_raw_query?

Thank you!