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# The Best Medium-Hard Data Analyst SQL Interview Questions  

By Zachary Thomas ([zthomas.nc@gmail.com](mailto:zthomas.nc@gmail.com), [Twitter](https://twitter.com/zach_i_thomas), [LinkedIn](https://www.linkedin.com/in/thomaszi/)) 

**Tip: **See the Table of Contents (document outline) by hovering over the vertical line on the right side of the page 

## Background & Motivation

> The first 70% of SQL is pretty straightforward but the remaining 30% can be pretty tricky.