Over the last week I have pitched 8 presentations for SQL Connections in Vegas at the end of October 2012. Hoping that 3 of my presentations get accepted. Here is the list so far. Using the New Analytic Functions in SQL Server 2012 Exploring the TSQL Enhancements in SQL Server 2012 Unleashing Common Table Expressions in SQL Server Using SSRS …
Working on my Presentations for SQL Connections Fall 2012 Read more »
After the last post on Cumulative Distribution Function (CDF) or as it is known in TSQL CUME_DIST(), I realized that although I showed how to use it, I didn’t really explain what it means, or when to use it. That is where this example comes in. First lets take an example that generates simulated dice rolls. What are the odds …
Cumulative Distribution Function (CDF) – Analyzing the Roll of Dice with TSQL Read more »
Continuing on the TSQL 2012 Analytic Series now on to the CUME_DIST function SQL Server 2012 introduces another new analytic function. The Cumulative Distribution Function CUME_DIST() refers to the probability that the value of a random variable falls within a specified range. CUME_DIST is the function that maps values to their percentile rank in a distribution. CUME_DIST function calculates the possibility …
More TSQL 2012 Analytics CUME_DIST – Cumulative Distribution Read more »
Like the other new Analytic functions, PERCENTILE_DISC and PERCENTILE_CONT require the use of the OVER clause. For this example I will be using almost the same revenue table in the sample database that I set up for the LEAD and LAG posting earlier in the week, and the PERCENT_RANK posting yesterday, just a few values changed to show the differences between these …
More TSQL 2012 Analytics PERCENTILE_DISC and PERCENTILE_CONT Read more »
Percent rank is defined as the number of values that are the same or less than the current value divided by one less than the number of values. Percent rank is different than PERCENTILE, stay tuned for PERCENTILE_DISC and PERCENTILE_CONT which are different from PERCENT_RANK. For this example I will be using the same revenue table in the sample database …
SQL Server 2012 introduces 8 new analytic functions. This post will cover 2 of them LEAD and LAG, which can be used to reference a value in the row before or the row after the current row. If you have read my OVER clause articles you will recognize the REVENUE table. Just a table listing department revenue year over year …
In a previous article I covered the usage of ROWS PRECEDING and FOLLOWING in the over clause. For this example I am going to use the same database and tables that I created in the previous example to show ROWS UNBOUNDED both PRECEEDING and FOLLOWING. One of the new features available in TSQL in SQL Server 2012 is the ROWS UNBOUNDED …
Transact SQL OVER Clause – ROWS UNBOUNDED PRECEDING or FOLLOWING Read more »
First for this example, and a few to follow we need to create the database that we are going to play around in. Next a review of the OVER clause as it is support prior to SQL Server 2012. Which produces the following output. Which gives you the average revenue and sum or the revenue for each department. In the …
One of the new Dynamic Management Views introduced in SQL Server 2012 is the dm_server_services which returns info on the services running that are associated with SQL Server. select * from sys.dm_server_services; Give it a try. Looking this over, the first thing that comes to mind is to to use this to be able to detect if the SQL Server Agent Process is …
New DMV in SQL Server 2012 sys.dm_server_services Read more »
There is no more Business Intelligence Development Studio (BIDS) in SQL Server 2012, instead it has been replaced with the SQL Server Data Tools that uses the core of Visual Studio 2010, with the Report Builder and Report Designer built in to the new Visual Studio. The UI has changed colors, and looks a bit sharper, but overall you have …
No more Business Intelligence Development Studio in SQL 2012 Read more »