我们如何从MySQL表中获取备用奇数记录？
为了理解这个概念，我们使用表“Information”中的数据，如下所示：
Select * from Information; +----+---------+ | id | Name | +----+---------+ | 1 | Gaurav | | 2 | Ram | | 3 | Rahul | | 4 | Aarav | | 5 | Aryan | | 6 | Krishan | +----+---------+ 6 rows in set (0.00 sec)
现在，下面的查询将从上表“信息”中获取备用奇数记录-
Select id,Name from information group by id having mod(id,2) = 1; +----+--------+ | id | Name | +----+--------+ | 1 | Gaurav | | 3 | Rahul | | 5 | Aryan | +----+--------+ 3 rows in set (0.09 sec)