Question

I am completely new to SQL Server and don’t have any idea about it. I tried writing a query similar to oracle and I dont see expected results.

My table has a column whenChanged – sample value is 2011-10-05 21:22:27.0

There are 100k rows in the table and I want the list of rows which got changed in the last 1 day, 1 hour blah.blah.blah.

I wrote a query like select top 10 * from tablename where whenchanged > whenchanged -1.

But dont see what i want

Answer 1

Try this to get all the records that have been changed in the last day:

select top 10 * from tablename where whenchanged > DATEADD (D, -1, GETDATE())

http://msdn.microsoft.com/en-us/library/ms186819.aspx for the details on the DATEADD function and the other date parts you can specify

EDIT: If you want to get records between 2 dates the something like this will work:

select * from tablename where whenchanged BETWEEN 'Date1ValueGoesHere' AND 'Date2ValueGoesHere'