Question

I need to select all records from my SQL Server database that falls between a certain hour. Let me give you an example:

Current time is 9:33 am and you have numerous Program records in the database that have an ProgramStart and ProgramEnd. An example of the dates might be:

 | ProgramStart             | ProgramEnd              | ClientID |
 +--------------------------+-------------------------+----------+
 | 1900-01-01 09:00:00.000  | 1900-01-01 10:00:00.000 | 5        |
 +--------------------------+-------------------------+----------+
 | 1900-01-01 11:00:00.000  | 1900-01-01 13:00:00.000 | 4        |
 +--------------------------+-------------------------+----------+
 | 1900-01-01 12:00:00.000  | 1900-01-01 14:00:00.000 | 5        |
 +--------------------------+-------------------------+----------+
 | 1900-01-01 11:00:00.000  | 1900-01-01 13:00:00.000 | 6        |
 +--------------------------+-------------------------+----------+
 | 1900-01-01 16:00:00.000  | 1900-01-01 17:00:00.000 | 7        |
 +--------------------------+-------------------------+----------+
 | 1900-01-01 16:00:00.000  | 1900-01-01 17:00:00.000 | 5        |
 +--------------------------+-------------------------+----------+
 | 1900-01-01 17:00:00.000  | 1900-01-01 18:00:00.000 | 4        |
 +--------------------------+-------------------------+----------+

I want to extract all records for client 5 and between the current time which is 9:33am

How does one do that with SQL. I tried this, but it doesn’t work:

 SELECT CAST('1900-01-01 09:33:00.000' AS datetime) AS TimeNow, * FROM Programs
 WHERE ClientID = 5
 AND TimeNow BETWEEN '1900-01-01 09:00:00.000' AND '1900-01-01 10:00:00.000'

any suggestions would be greatly appreciated.

Many thanks,
Paul

Answer 1

select *
    from Programs
    where ClientId = 5
        and DATEADD(Day, 0-DATEDIFF(Day, 0, GetDate()), GetDate()) between ProgramStart and ProgramEnd