Categories
SQL 201

Conditional logic With the CASE expression

CASE is SQLs 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.

Categories
SQL 301

Why You Need SQL Window Functions (pt 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.

Categories
SQL 301

Why You Need SQL Window Functions (pt 1)

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

Categories
SQL 101

Bite-Sized Videos For Beginners

Each of these Videos For Beginners is just long enough to get you started, with room to dive into the topic when you feel ready.

Categories
SQL 201

All About SQL Aggregate Functions

Time for some fun with SQL aggregate functions, and Mariah Carey

Categories
SQL 201

6 Ways to Search With System Tables

Your database doesn’t just contain your data. It also contains data about your data.

Categories
SQL 201

10 Ways to Tweak Slow SQL Queries

Before you rage quit or call in your DBA, check these things aren’t slowing down your SQL query. A few tweaks could be all you need to get things working.

Categories
SQL 201

Have You VACUUMed Your Tables Lately?

A high-level overview of why your DBA needs to VACUUM your tables

Categories
SQL 101

Why a Database Is Like a Dance Class

This week I got to thinking, a ballet class is a good way to describe database concepts.