ADD time 23:59:59.999 to end date for between - sql

Question

I have been having an issue with using the following:
Column_Name BETWEEN #StartDate AND #EndDate.
This is because the #EndDate = 00:00:00.000 for the time, which doesn't pick up all the values for that day.
How would I convert the #EndDate (Always 00:00:00.000) to always be Date + 23:59:59.999?

Answer 1

One option that avoids needing to add EndDate + 23:59:59.999 is to not use the between comparison and instead use column_name >= #StartDate and column_name < #EndDate +1

Answer 2

Please note the accuracy and rounding of the DATETIME type in SQL Server 2005:
datetime values are rounded to increments of .000, .003, or .007 seconds
SQL Server 2008 introduced the DATETIME2 type which has an accuracy of 100 nanoseconds. So in SQL Server 2008 you could do:
DECLARE #d DATETIME = '2011-10-07 00:00:00.000'
SELECT DATEADD(MS, -1, DATEADD(D, 1, CONVERT(DATETIME2, #d)))
Alternatively you may want to avoid the BETWEEN operator in this case:
#StartDate <= Column_Name AND Column_Name < DATEADD(D, 1, #EndDate)

Answer 3

Since the advent of datetime2 datatype, I have been struggling with this problem. To calculate the end of day as a datetime2 datatype I add the number of seconds in a day to the =date= then subtract 100 nanoseconds. Voila:
declare #bod datetime2
declare #eod datetime2
set #bod = cast (GETDATE() as DATE)
set #eod = DATEADD(ns, -100, DATEADD(s, 86400, #bod))
print #bod
print #eod
-- answer:
2013-12-01 00:00:00.0000000
2013-12-01 23:59:59.9999999
Now I'm off to datetimeoffset data type.

Answer 4

You can change the time in a date like this (I'm using getdate() as an example):
select cast(convert(char(8), getdate(), 112) + ' 23:59:59.99' as datetime)
Explanation:
convert(char(8), getdate(), 112) converts the date to yyyymmdd format (as string).
Then you can just append the desired time, and convert the whole string to datetime again.
EDIT:
It slows the performance when you do the casting on a database column, yes.
But he has a datetime variable and he just uses the casting to change the time in the variable once
--> I see no performance issue if he uses my code to change his #EndDate variable.
Valid point, however. Casting is not a good solution in all situations.

Answer 5

You could also do this:
select #endDate = dateadd(ms,-3,dateadd(day,1,DATEADD(dd, DATEDIFF(dd,0,#endDate), 0)))
when #endDate is '5/3/2013'

Answer 6

--Execution / post date is 1 Feb. 2020
-- sql server this month start and end
select DATEADD(month, DATEDIFF(month, 0, getdate()), 0) -- 2020-02-01 00:00:00.000
select DATEADD(second,-1, datediff(day,0,EOMONTH(getdate()))+1) -- 2020-02-29 23:59:59.000
-- sql server this day start and end
select DATEADD(day, DATEDIFF(day, 0, getdate()), 0) -- 2020-02-01 00:00:00.000
select DATEADD(second,-1, datediff(dd,0,getdate())+1) -- 2020-02-01 23:59:59.000
-- sql server last 30 days start and end
select DATEADD(day, -30, DATEDIFF(day, 0, getdate())) -- 2020-01-02 00:00:00.000
select DATEADD(second,-1, datediff(dd,0,getdate())+1) -- 2020-02-01 23:59:59.000

Answer 7

You can use between if your end date is set to 00:00:00 of the next day:
ColumnName between #StartDate and convert(datetime, convert(date, #EndDate + 1))
This converts the next day to a date, which removes the hours information, then you convert it back to a datetime which adds default hour information: 00:00:00.

Answer 8

You can use any variant of the date from parts functions. For example, let's use DATETIMEFROMPARTS:
DECLARE #d DATETIME2(0) = '2011-10-07 04:32:12.000';
SELECT DATETIMEFROMPARTS(YEAR(#d), MONTH(#d), DAY(#d), 23, 59, 59, 0);
-- 2011-10-07 23:59:59

Answer 9

I first convert the original datetime to begin of the day, then add hours and seconds to it:
DECLARE #start DATETIME, #end DATETIME
SET #start = DATEADD(DAY, DATEDIFF(DAY, 0, GETDATE()), 0)
SET #end = DATEADD(HOUR, 23, DATEADD(n, 59, #start))
PRINT #start
PRINT #end
Oct 27 2017 12:00AM
Oct 27 2017 11:59PM