-- Статистика: топ по количеству сообщений.

CREATE OR REPLACE FUNCTION bot.get_top_list()
    RETURNS TABLE(u character varying, n character varying, c bigint)
    LANGUAGE plpgsql
AS $$
BEGIN
    RETURN QUERY
        SELECT tu.username, du.nick, count(*) AS cnt
        FROM bot.messages m
            INNER JOIN bot.tg_users tu ON m.id_user = tu.id_user
            INNER JOIN bot.de_users du ON m.id_user = du.id_user
        GROUP BY tu.username, du.nick
        ORDER BY 3 DESC
        LIMIT 10;
END;
$$;