SQL DATEPART

SQL DATEPART function will extract or display specified date part from the existing date. This Sql Server Datepart function always return integer value. For example, If you want to extract year, month or quarter from the existing Date, you can use this SQL Datepart function. The syntax of the Sql Server Datepart function

DATEPART (Datepart, Date)

Date: Please specify the valid date as second argument. It can be column, expression or any SQL Server variable. The Datepart is the part of a given date which we are going to display as output. The list of available datepart argument in SQL Server.

Datepart	Abbreviations	Description
year	yy,yyyy	This will display the year value from the given date
quarter	qq, q	This Sql Server Datepart find and display the quarter number from a given date
month	mm, m	This will find and display the month number from the given date
dayofyear	dy, y	Day of a year number from the user given date (1 to 365)
day	dd, d	Day number from a given date (1 to 31)
week	wk, ww	This Sql Server datepart function will return the Week number from the specified date
weekday	dw, w	Week days number from the given date (0 as Sunday & 6 as Saturday)
hour	hh	It will print the Hour value.
minute	mi, n	The Minute Value in a given date
second	ss, s	Seconds Value present in a date
millisecond	ms	Milliseconds Value in a given date
microsecond	mcs	Microsecond Value present in the given date
nanosecond	ns	Prints the Nanoseconds Value.
TZOffset	tz	Prints the Time Zone Offset Value.
ISO_WEEK	isowk, isoww	This will return the ISO Week Number from a given date

SQL DATEPART Function Example 1

In this Sql Server Datepart example we are going to declare a variable of datetime2 data type. Let us assign valid date to that variable and perform all the available datepart operation

DECLARE @Date datetime2 = '2015-08-25 14:24:04.1234567'
SELECT 'YEAR' AS [DatePart], DATEPART(year, @Date) AS [New Date] 
UNION ALL
SELECT 'QUARTER', DATEPART(quarter, @Date) 
UNION ALL
SELECT 'MONTH', DATEPART(month, @Date) 
UNION ALL
SELECT 'DAYOFYEAR', DATEPART(dayofyear, @Date) 
UNION ALL
SELECT 'DAY', DATEPART(day, @Date) 
UNION ALL
SELECT 'WEEK', DATEPART(week, @Date) 
UNION ALL
SELECT 'WEEKDAY', DATEPART(weekday, @Date) 
UNION ALL
SELECT 'HOUR', DATEPART (hour, @Date) 
UNION ALL
SELECT 'MINUTE', DATEPART(minute, @Date) 
UNION ALL
SELECT 'SECOND', DATEPART(second, @Date) 
UNION ALL
SELECT 'MILLISECOND', DATEPART(millisecond, @Date) 
UNION ALL
SELECT 'MICROSECOND', DATEPART(microsecond, @Date) 
UNION ALL
SELECT 'NANOSECOND',DATEPART(nanosecond, @Date)

We declared one variable and assigned the date and time to that SQL Server variable

DECLARE @Date datetime2 = '2015-08-25 14:24:04.1234567'

The Datepart function prints the year value.

SELECT 'YEAR', DATEPART(year, @Date)

The Datepart function print the Month number

SELECT 'MONTH', DATEPART(month, @Date)

DATEPART Function Example 2

In this example, we use one of the custom table to perform SQL Datepart operations on Hire Date column.

SELECT [FirstName] + ' '+ [LastName] AS [Full Name]
      ,[Occupation]
      ,[YearlyIncome]
      ,[HireDate]
      ,DATEPART(year, [HireDate]) AS [YEAR]
      ,DATEPART(quarter, [HireDate]) AS [QUARTER]
      ,DATEPART(month, [HireDate]) AS [MONTH]
      ,DATEPART(day, [HireDate]) AS [DAY]
 FROM [SQL Tutorial].[dbo].[Employee]

It will display the Year value from the Hire Date Column

DATEPART(year, [HireDate]) AS [YEAR]

The below Date Function statement will display the Quarter value from the Hire Date Column

DATEPART(quarter, [HireDate]) AS [YEAR]