# Common T-SQL Functions

T-SQL's built-in functions work on one row at a time. Join and change text, put a value in place of NULL, and pull apart dates and round numbers.

![Cheat sheet: Common T-SQL Functions](https://fsdtrainingmedia.blob.core.windows.net/public/images/2026/11/1436b278051c4b67903b9fe14a746cc6.webp)

- Category: SQL
- Level: Apprentice
- Tags: COALESCE, Date Functions, ISNULL, sql, String Functions, t-sql
- Updated: November 3, 2026

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