Sql Query to Get First, Last Date and Total Days in Year or Month

Introduction: In this article I am going to share how to find first and last day of the year or month and count the total number of days in year or month from the current or any date in Sql Server.

In previous articles i explained Query to get upcoming birthdays within week and Multiple queries to get all dates between two dates and CTE to remove duplicate records from table and Pass month and year value and get first, last and total days in that month and Create sql server database script and create database from that script

Description: Many times we need to get the first and last day of the month or year and also count of total days in month or year for many purposes. Here I have mentioned the query to get the starting and end date of the month or year and count of total days.

Implementation: Let write the queries to get the desired results

Get First, Last Date and Total Days in Year

DECLARE @MyDate DATE=GETDATE(), @FirstDate DATE,@LastDate DATE, @TotalDays INT

SET @FirstDate=(SELECT DATEADD(DAY,-(DATEPART(DAYOFYEAR,@MyDate))+1,@MyDate))

SET @LastDate= (SELECT DATEADD(DAY,-(DATEPART(DAYOFYEAR,DATEADD(YEAR,1,@MyDate))),DATEADD(YEAR,1,@MyDate)))

SET @TotalDays=(DATEDIFF(D,@FirstDate,@LastDate))+1

SELECT @FirstDate [First Date of Year] ,@LastDate [Last Date of Year], @TotalDays [Total Days in Year]

Output: 

First Date of Year	Last Date of Year	Total Days in Year
2016-01-01	2016-12-31	366

Get First, Last Date and Total Days in Month

DECLARE @MyDate DATE=GETDATE(), @FirstDate DATE,@LastDate DATE, @TotalDays INT

SET @FirstDate=(SELECT DATEADD(DAY ,-(DAY(@MyDate )-1),@MyDate ))

SET @LastDate=(SELECT  DATEADD(DAY ,-(DAY(@MyDate )), DATEADD(MONTH,1,@MyDate )))

SET @TotalDays=(DATEDIFF(D,@FirstDate,@LastDate))+1

SELECT @FirstDate [First Date of Month] ,@LastDate [Last Date of Month], @TotalDays [Total Days in Month]

Output: 

First Date of Month	Last Date of Month	Total Days in Month
2016-05-01	2016-05-31	31

Now over to you:

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