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 …
Here is a quick video tutorial on how to use the T-SQL CASE function on SQL Server 2012, SQL Server 2014 0r newer. This was originally part of my free SQL query training for the 70-461 certification exam. Here is the sample or demo code from the video tutorial. More Info: Additional Training on my YouTube Channel Free SQL Query Training …
Here is a quick video tutorial on how to use the IIF function on SQL Server 2012, SQL Server 2014 0r newer. This was originally part of my free SQL query training for the 70-461 certification exam. Here is the sample code from the video. More Info: Additional Training on my YouTube Channel Free SQL Query Training
NTILE is a SQL Server function that can be called in a TSQL Query. This is part of the free sql query training to prepare for the Microsoft 70-461 queries exam. Here is a video presentation on using the TSQL NTILE function. And here is the sample code associated with the presentation. Feel free to copy and paste to SSMS …
SQL Server 2012 adds many new features to Transact SQL (T-SQL). One of my favorites is the Rows and Range enhancements to the over clause. These enhancements are often times referred to as the windowing functions. Want to learn more about the windowing functions? Check out this aggregation class that I have created: Overview:ROWS PRECEDING, FOLLOWING, UNBOUNDED, refers to the …
SQL Server 2012 introduces the IIF statement. It is very similar to the IIF statement in MS Access. I have extracted the IIF part of my presentation on Whats new in SQL Server 2012, and turned it into a video with a demo of how to use the IIF statement. The IIF statement is a quick shortcut to simple CASE …
For years I have heard the question of how can I do an IIF in TSQL? Honestly I never thought it would be that useful since the CASE statement is easy enough to use, but after seeing it in TSQL 2012, I can safely say I like it. The answer used to be, just use the CASE statement, and the …
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 »
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 …