西胡卢
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; +--------+------------+--------+------+---------------------+--------+[详细]
2022-12-28 14:35 分类:问答