SQL Server Date Function DATEPART()

The DATEPART() function in SQL Server is used to extract a specific part of a date or datetime value, such as the year, month, or day. It takes two arguments: the part of the date or datetime value to extract, and the date or datetime value to extract it from.

The syntax of the DATEPART() function is as follows:

DATEPART(part, date)

Here's an example of how to use the DATEPART() function in a SQL query to extract the month from a date value:

SELECT DATEPART(month, '2022-02-28');

This query will return the integer value 2, which is the month of February in the date.

In this example, the part is "month" since we want to extract the month from the date. The date is "2022-02-28", which is the date to extract the month from.

Note that the DATEPART() function is specific to SQL Server and the syntax and date format it supports may vary slightly depending on the system. Additionally, the parts of the date or datetime value that can be extracted using DATEPART() may vary depending on the system, but commonly supported parts include year, quarter, month, day, hour, minute, and second.