📅  最后修改于: 2022-03-11 15:05:05.660000             🧑  作者: Mango
DECLARE @date date = '12-21-16';
DECLARE @datetime datetime = @date;
SELECT @datetime AS '@datetime', @date AS '@date';
--Result
--@datetime @date
------------------------- ----------
--2016-12-21 00:00:00.000 2016-12-21