SQL - MySQL COUNT() Function

August 11, 2024

Tags: Math, MySQL, MySQL Numeric Functions

Categories: MySQL Functions, Reference, SQL Reference

Quick Reference

The MySQL COUNT() function returns the number of records returned by a select query. NULL values are not counted.

The following gets the number of products (using the product_id column) from the Products table.

SELECT COUNT(product_id) AS 'Number of Products' FROM Products;

Output

Number of Products
52

Syntax

COUNT(expression)

SQL Notes:

Any work being done to modify the structure of a database or delete tables or the the database itself should only be done after making a recent backup

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