Margarity Kerns recently published a very nice article at SQL Server Central on using hash functions to detect changes in rows during the data warehouse load ETL process.  On the discussion page for the article I noticed a lot of the same old arguments against using hash functions to detect change.  After having this same discussion ...

This is my contribution to the T-SQL Tuesday blog party, started by Adam Machanic and  hosted this month by Aaron Nelson.  Aaron announced this month's topic is ''reporting'' so I figured I'd throw a blog up on a reporting topic I've been interested in for a while -- namely creating custom reports in SSMS. Creating SSMS custom ...

Ask about nearly any kind of SQL-based date calculation in the newsgroups, and you'll likely get responses that include use of an auxiliary calendar table.  It's a really good idea, and something I highly recommend to anyone who has to do date-based calculations on the server.  For those who do dimensional modeling, you'll probably ...

Based on feedback from the community (https://connect.microsoft.com/SQLServer/feedback/details/522123/sql-server-2008-service-pack-2 and https://connect.microsoft.com/SQLServer/feedback/details/522122/service-pack-4-for-sql-server-2005), Microsoft has announced plans to release Service Pack 2 for SQL Server 2008 and Service Pack 4 for SQL ...

New Jersey SQL Server User Group (NJSQL) is bringing SQLSaturday #39 to NYC on April 24, 2010!  The free all-day training event will be hosted by Microsoft at their Midtown Manhattan offices.  The speaker line-up is growing fast—if you'd like to present, visit the event's open call for speakers.  This is a free full-day ...

A common question on the newsgroups is ''how do you encrypt data in a .NET [or other] client application and then decrypt it on SQL Server [or vice versa]?'' I actually ran down my list of answers to someone who asked this in the newsgroups a few weeks ago. I won’t get into the details, but the answers all pretty much say the same thing -- ...

Back in January 2007, SQL guru Itzik Ben-Gan posted a series of MS Connect enhancement requests concerning windowing function enhancements.  Those who have used the ROW_NUMBER(), RANK(), DENSE_RANK(), and NTILE() functions on SQL 2005 and 2008, you already know how useful they are.  They simplify code and can improve performance ...