Suggest that master dates table is best.

But if it's not available, here's a query that will give you the dates for a given year and month.

Still working on how to get the cross-tab/pivot/matrix working to have these in columns, but this is a start:

with daylist as

(

select 1 as daynum

union all

select dl.daynum + 1 as daynum

from daylist dl

where dl.daynum + 1 <=

day( DATEADD( s, -1, DATEADD( mm, DATEDIFF( m, 0,

CAST(@yearnum + '-' + @monthnum + '-01' AS datetime))+1,0)))

)

select daynum from daylist order by daynum;