# Common SQL Functions

How to use MySQL's CONCAT() to join text from several columns and COALESCE() to replace NULL with a default value.

![Cheat sheet: Common SQL Functions](https://fsdtrainingmedia.blob.core.windows.net/public/images/2026/11/82565818ebb842c1be89892f07c7b9ad.webp)

- Category: SQL
- Level: Apprentice
- Tags: mysql, sql
- Updated: November 3, 2026

Source: https://www.ask-codey.com/cheat-sheets/common-sql-functions-cheat-sheet