我需要根据日期对一些记录进行分组,但它是日期和时间字段,我需要忽略is的时间部分,日期部分 - 这里是我的SQL,因为它代表:只需从SQL Server中的DateTime列中选择分组的日期
SELECT
AutoShipItems.CustomerID,AutoShipItems.NextOrderDate,
Customer.FirstName,Customer.LastName, Customer.EmailAddress
FROM
AutoShipItems
INNER JOIN Customer ON
AutoShipItems.CustomerID =Customer.CustomerID
WHERE
(AutoShipItems.NextOrderDate <= GETDATE())
GROUP BY
AutoShipItems.CustomerID, AutoShipItems.NextOrderDate,
Customer.FirstName, Customer.LastName,
Customer.EmailAddress
ORDER BY
AutoShipItems.NextOrderDate
的可能的复制[如何只从SQL Server datetime数据类型返回日期部分(http://stackoverflow.com/questions/113045/how-to-return date-part-only-from-a-sql-server-datetime-datatype) – 2016-10-28 19:38:07