SQL Server: DAY Function

DAY function

This SQL Server tutorial explains how to use the DAY function in SQL Server (Transact-SQL) with syntax and examples.

Description

In SQL Server (Transact-SQL), the DAY function returns the day of the month (a number from 1 to 31) given a date value.

Syntax

The syntax for the DAY function in SQL Server (Transact-SQL) is:

DAY( date_value )

Parameters or Arguments

date_value

The date from which to extract the day of the month.

Note

Applies To

The DAY functions can be used in the following versions of SQL Server (Transact-SQL):

  • SQL Server 2017, SQL Server 2016, SQL Server 2014, SQL Server 2012, SQL Server 2008 R2, SQL Server 2008, SQL Server 2005

Example

Let’s look at some SQL Server DAY function examples and explore how to use the DAY functions in SQL Server (Transact-SQL).

For example:

SELECT DAY('2014/04/28');
Result: 28

SELECT DAY('2014/03/31 10:05');
Result: 31

SELECT DAY('2014/04/01 10:05:18.621');
Result: 1

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