Speed up SQL queries with indexes
Your query is running slow, have you checked your indexes?
Category: Data Analysis
SQL Joins without the Venn diagrams
Joining tables is the first big learning curve after getting your head around SQL basics.
Why I use SQL CTEs
CTEs are underrated compared to the subquery. Here’s why I prefer to use CTEs when building SQL queries.
Excel VLOOKUP
VLOOKUP lets Excel do the hard work of matching up a value from one spreadsheet to another. It saves time and is an essential Excel tool.
How to customise SQL Server Management Studio (SSMS)
SSMS is highly customisable, here’s 10 ways to make it work best for you.
Relational database fundamentals
When working with data in relational databases there are some key concepts to understand
