$sql = <<<EOS
CREATE OR REPLACE FUNCTION drop_partitions(IN schema TEXT, IN parttionbase TEXT)
RETURNS void
LANGUAGE plpgsql
AS
$$
DECLARE
    row     record;
BEGIN
    FOR row IN
        SELECT
            table_schema,
            table_name
        FROM
            information_schema.tables
        WHERE
            table_type = 'BASE TABLE'
        AND
            table_schema = _schema
        AND
            table_name ILIKE (_parttionbase || '%')
    LOOP
        EXECUTE 'DROP TABLE ' || quote_ident(row.table_schema) || '.' || quote_ident(row.table_name);
        RAISE INFO 'Dropped table: %', quote_ident(row.table_schema) || '.' || quote_ident(row.table_name);
    END LOOP;
END;
$$;
EOS;
     DB::unprepared($sql);