婚礼歌曲歌单 「婚礼BGM」时至今日，终于等到你？

In SQL, why is "select *, count(*) from sentGifts group by whenSent;" ok, but when "*" and "count(*)" is switched position, then it gives an error?

In SQL, using the table: mysql>select * from sentGifts; +--------+------------+--------+------+---------------------+--------+