我有这个实体:
int arr = {10,20};
int *p = arr; // p points to the first element of array, i.e 10
*(p)++; // now p points to the next element i.e 20.
,我想找出最大月份(可记录的月份)。我有最高价,但是月份错了。
payments(idPayment, idGroup, price, paymentDate)
感谢建议
答案 0 :(得分:1)
您可以使用public class Customer
{
public long Id { get; set; }
public string UserName { get; set; }
public AddressModel Address { get; set; }
}
和ORDER BY
来选择价格最高的行
LIMIT
SELECT SUM(price) as price,
YEAR(paymensDate) as year,
MONTH(paymentDate) as month
FROM `payments`
WHERE idGroup=27
GROUP BY YEAR(paymentDate),
MONTH(paymentDate)
ORDER BY price DESC
LIMIT 1
将提供所提供列的最大值,但不能保证该列的其他值会返回该行中由max选取的相同值