In this post, Learn how to calculate total number. of days between two specific dates in SQL Server.
To get a total no. of days between two specific dates, you use the DATEDIFF function of SQL Server.
declare @startDate datetime
declare @endDate datetime
set @startDate = '2019-01-01'
set @endDate = '2020-01-01'
select DATEDIFF(d, @startDate, @endDate) As 'Total No. of Days'Output
Total No. of Days
-----------------
366
(1 row(s) affected)
2020-03-03