220. Regex basics

Regular expressions have 3 main purposes:

  • filter database records that match a specific pattern 🔍
  • extract parts of the text that match a specific pattern 📝
  • replace parts of the text that match a specific pattern 🔧

In the previous lesson we’ve learned that regular expressions (will be referred to as a regex or regexp) is just a way to specify a search pattern. From the database perspective, this search pattern is just a string value, for example: (A[\w\s]*\d{3,}[\w\s]*\?).

So how do we communicate our regex to the database to accomplish these...

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Anatoli Makarevich, author of SQL Habit About SQL Habit

Hi, it’s Anatoli, the author of SQL Habit. 👋

SQL Habit is a course (or, as some of the students say, “business simulator”). It’s based on a story of a fictional startup called Bindle. You’ll play a role of their Data Analyst 📊 and solve real-life challenges from Business, Marketing, and Product Management.

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