• When I run the four statements, I get:

    2009-11-15 22:39:14.090 Sunday

    2009-11-15 22:39:14.090 Sunday

    2009-11-16 03:39:14.090 Monday

    2009-11-16 03:39:14.090 Monday

    Not the same day or hour. They're not returning the same values.

    Wayne
    Microsoft Certified Master: SQL Server 2008
    Author - SQL Server T-SQL Recipes


    If you can't explain to another person how the code that you're copying from the internet works, then DON'T USE IT on a production system! After all, you will be the one supporting it!
    Links:
    For better assistance in answering your questions
    Performance Problems
    Common date/time routines
    Understanding and Using APPLY Part 1 & Part 2