在知道您有日历表之前，我已经做完了。我已经习惯
master.dbo.spt_values了连续十二个月（包括当前）。
declare @ProductNo int set @ProductNo = 1234select MonTH(d.date), YEAR(d.date), isnull(t.amnt, 0) as [Units sold] from ( SELECt YEAR(o.OrderDate) as 'Year', MonTH(o.OrderDate) as 'Month', sum(Amount) as amnt, [ProductNo] FROM [OrderLine] ol inner join [Order] o on ol.OrderNo = o.OrderNo where ProductNo = @ProductNo group by ProductNo, YEAR(o.OrderDate), Month(o.OrderDate)) tright join ( select dateadd(mm, -number, getdate()) as date from master.dbo.spt_values where type = 'p' and number < 12) d on year(d.date) = t.[year] and month(d.date) = t.[month]order by YEAR(d.date), MonTH(d.date)
