Convert date yyyy-mm-dd to integer YYYYMM

On version 2012 or higher you can use the format function to get just year and month, then cast it as an int.

On versions prior to 2012 you can do the formatting with the convert function, then cast as int.

declare @dateb datetime
set @dateb = getdate()

select cast(format(@dateb,'yyyyMM') as int) --2012 or higher
select cast(convert(varchar(6),@dateb,112) as int) -- all versions

Perhaps a bit tidier:

SELECT YEAR(@dateb)*100 + MONTH(@dateb);