Month/year

i have to input month/year can u tell me what would the datatype of that column? - should it be datetime or just month/year? what would be the datatype?

i have to make function called getQuantityByMonth that when given the following inputs:
input: campaign,begin month/year, end month/year

returns the item sales for the items in a campaign with the following column headers...

output: period, periodint, campaign, itemnmbr, totalquantity


@startmonthyear datetime
@endmonthyear datetime

This is hardcoded, but the output of this is an example of what i would want. The purpose of this is to be able to do a multi-line graph.



select 'Oct 07' as Period, 200710 as PeriodInt, campaign,itemnmbr, totalquantity from

mycampaignitemquantity('COPD','10/1/2007','10/31/2007')

union

select 'Nov 07' as Period, 200711 as PeriodInt, campaign,itemnmbr, totalquantity from

mycampaignitemquantity('COPD','11/1/2007','11/30/2007')

union

select 'Dec 07' as Period, 200712 as PeriodInt, campaign,itemnmbr, totalquantity from

mycampaignitemquantity('COPD','12/1/2007','12/31/2007')

union

select 'Jan 08' as Period, 200801 as PeriodInt, campaign,itemnmbr, totalquantity from

mycampaignitemquantity('COPD','1/1/2007','1/31/2007')

union

select 'Feb 08' as Period, 200802 as PeriodInt, campaign,itemnmbr, totalquantity from

mycampaignitemquantity('COPD','2/1/2007','2/28/2007')

union

select 'Mar 08' as Period, 200903 as PeriodInt, campaign,itemnmbr, totalquantity from

mycampaignitemquantity('COPD','3/1/2007','3/31/2007')

order by itemnmbr, periodint


thanks for the help.