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[英]how to get exact 3 months ago date and time from today's date and current time using C#
[英]C# SQL Command : WHERE today's date and a custom time
約會的數據類型將為datetime
假設我想列出使用今天的日期和在11:00 AM到7.00PM之間的約會
我應該如何在C#程序中編寫查詢?
SELECT Appointment FROM table WHERE Appointment between 11AM and 7PM.
提前致謝 :)
var startDateTime = DateTime.Today + new TimeSpan(11, 0, 0);
var endDateTime = DateTime.Today + new TimeSpan(19, 0, 0);
將這些值作為參數傳遞到查詢中。
這在SQL Server 2005及以下版本中也適用:
SELECT Appointment FROM table
WHERE Appointment between
DATEADD(hour, 11, DATEADD(DAY, DATEDIFF(DAY, 0, GETDATE()), 0))
AND DATEADD(hour, 19, DATEADD(DAY, DATEDIFF(DAY, 0, GETDATE()), 0))
SELECT Appointment FROM table WHERE datepart(hour,Appointment) between 11 and 18
將給出11:00:00.000和18:59:59.999之間的時間
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