tsql: How to retrieve the last date of each month between given date range

Question

I have two date for example 08/08/2013 and 11/11/2013 and I need last date of each month starting from August to November in a table so that i can iterate over the table to

Answer 1

I've created a table variable, filled it with all days between @startDate and @endDate and searched for max date in the month.

declare @tmpTable table (dates date)
declare @startDate date = '08/08/2013'
declare @endDate date = '11/11/2013'

while @startDate <= @endDate
begin
    insert into @tmpTable (dates) values (@startDate)
    set @startDate = DATEADD(DAY, 1, @startDate)
end

select max(dates) as [Last day] from @tmpTable as o
group by datepart(YEAR, dates), datepart(MONTH, dates)

Results:

Last day
2013-08-31
2013-09-30
2013-10-31
2013-11-11

To also get last day of November this can be used before loop:

set @endDate = DATEADD(day, -1, DATEADD(month, DATEDIFF(month, 0, @endDate) + 1, 0))