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25 ways to excel with Excel

It doesn’t replace databases and BI tools for reporting, but Excel is just what you need for quick analysis and cleansing of small data sets

Conditional logic with the CASE expression

CASE is SQL’s answer to other programming languages IF-ELSE statement. If you need to test a condition and return a value CASE is the expression you need.

Why you need SQL Window Functions (part 2)

SQL Server Window Functions are incredibly powerful and allow us to access a total from another row and bucket data to show top performers.

Why you need SQL Window Functions (part 1)

SQL window functions are incredibly powerful and allow us to see the rows in a table with a new column showing a running total, rank or moving average.

SQL Aggregate Functions and Mariah Carey

Aggregate functions bring your data to life.
They allow you to take a standard table and use a function or two to build metrics and answer questions about the data.

Entity relationship diagrams

On first glance, Entity Relationship Diagrams may look like a spaghetti mess. This post hopes to demystify how they fit together with Sonic the Hedgehog