Using a Derived Table to Compare Data with Values from a Previous Year

Comparing year on year sales is a fundamental requirement in much commercial analysis - here you learn how to do this in SQL

Drop table in one shot

Display Median Values

DO you know how to display median values from a Dataset? In this short article you will use windowing functions to do this

Variable assignments

T-SQL Window Functions and Performance

T-SQL window functions, introduced in 2005 with enhancements in 2012, are great additions to the T-SQL language. In this article, Kathi Kellenberger explains what you need to know to get good performance when using these functions.

Generating Completely Random Sample Output from a Dataset

This short article shows a simple example of how to generate completely random sample output from a Dataset

Creating Compound Interest Calculations in SQL

This is the first article in a short series of SQL Server query challenges to test and expand your SQL Server querying skills

Assignments

Build Better Habits

Quick Tips For Debugging Large Stored Procedures

SSMS is a good management tool, but it’s not a good development tool. When you’re writing some simple queries, it’s fine. When you’re writing code with lots of branching, dynamic SQL, temp tables, error handling, and so on… Not so much. Here are some tips Erik darling has put together after a couple years of wrangling the Blitz scripts in the First Responder Kit.