SQL Mastery: Advanced Techniques for Data Professionals

Elevating Your Data Skills with Window Functions, Regex, and CTEs

Mia Dwyer
Towards Data Science
6 min readApr 1, 2024

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During my tenure as a lead data analyst at Chime, three crucial SQL techniques— Window Functions, Regex, and CTEs — significantly advanced my capabilities, propelling me from intermediate proficiency to the expertise required for a lead analyst role. This article details these so you can up-level your skills and unlock new dimensions in data exploration.

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