SQL Server DATEDIFF() Function

Syntax

DATEDIFF(date1, date2)

Basic Example

SELECT DATEDIFF() AS result;

When to use it

Use DATEDIFF when you need a date operation in SQL Server. This page is designed as a quick reference for developers, analysts, and students comparing SQL dialects.

Common mistake

A common mistake is copying syntax from another SQL dialect. Always verify function name, argument order, and formatting tokens for SQL Server.

Related SQL Functions

• MySQL NOW() Function
• MySQL CURDATE() Function
• MySQL CURRENT_DATE() Function
• MySQL CURRENT_TIMESTAMP() Function
• MySQL DATE_ADD() Function
• MySQL DATE_SUB() Function

FAQ

Is DATEDIFF available in every SQL database?

Not always. Function names and argument behavior can differ across SQL engines.

Can I use this in SELECT queries?

Yes. Most SQL functions are commonly used in SELECT and often in WHERE, ORDER BY, and GROUP BY depending on the function.