Two questions about my SQL script. How to add subtotal/total lines, and a sorting issue - tsql

Question

I have some T-SQL that generates a nice report giving a summary some stuff by month.
I have 2 questions, is there a way to get the to sort the months by calendar order, not by alpha? And, what i would like to do is add a total line for each year, and a total line for the whole report?
SELECT
CASE WHEN tmpActivity.Year IS NULL THEN
CASE WHEN tmpCreated.Year IS NULL THEN
CASE WHEN tmpContactsCreated.Year IS NULL THEN
null
ELSE tmpContactsCreated.Year END
ELSE tmpCreated.Year END
ELSE tmpActivity.Year END As Year,
CASE WHEN tmpActivity.Month IS NULL THEN
CASE WHEN tmpCreated.Month IS NULL THEN
CASE WHEN tmpContactsCreated.Month IS NULL THEN
null
ELSE DateName(month, DateAdd(month, tmpContactsCreated.Month - 1, '1900-01-01' )) END
ELSE DateName(month, DateAdd(month, tmpCreated.Month - 1, '1900-01-01' )) END
ELSE DateName(month, DateAdd(month, tmpActivity.Month - 1, '1900-01-01' )) END As Month,
CASE WHEN tmpActivity.ActiveAccounts IS NULL THEN 0 ELSE tmpActivity.ActiveAccounts END AS ActiveAccounts,
CASE WHEN tmpCreated.NewAccounts IS NULL THEN 0 ELSE tmpCreated.NewAccounts END AS NewAccounts,
CASE WHEN tmpContactsCreated.NewContacts IS NULL THEN 0 ELSE tmpContactsCreated.NewContacts END AS NewContacts
FROM
(
SELECT YEAR(LastLogon) As Year, MONTH(LastLogon) As Month, COUNT(*) As ActiveAccounts
FROM Users
WHERE LastLogon >= '1/1/1800'
GROUP BY YEAR(LastLogon), MONTH(LastLogon)
) as tmpActivity
FULL JOIN
(
SELECT YEAR(Created) As Year, MONTH(Created) As Month, COUNT(*) As NewAccounts
FROM Users
WHERE Created >= '1/1/1800'
GROUP BY YEAR(Created), MONTH(Created)
) as tmpCreated ON tmpCreated.Year = tmpActivity.Year AND tmpCreated.Month = tmpActivity.Month
FULL JOIN
(
SELECT YEAR(Created) As Year, MONTH(Created) As Month, COUNT(*) As NewContacts
FROM Contacts
WHERE Created >= '1/1/1800'
GROUP BY YEAR(Created), MONTH(Created)
) as tmpContactsCreated ON tmpContactsCreated.Year = tmpCreated.Year AND tmpContactsCreated.Month = tmpCreated.Month
Order By Year DESC, Month DESC

Answer 1

To order by the month use the following:
ORDER BY DATEPART(Month,Created) ASC
DatePart() returns an integer for the part specified 1 for January, 2 for Febuary etc.
You're SQL could be helped with the COALESCE() and ISNULL() functions. This is the same as your first select:
SELECT
COALESCE(tmpActivity.Year,tmpCreated.Year,tmpContactsCreated.Year) as Year,
COALESCE(tmpActivity.Month,tmpCreated.Month,tmpContactsCreated.Month) as Month,
ISNULL(tmpActivity.ActiveAccounts,0) AS ActiveAccounts,
ISNULL(tmpCreated.NewAccounts,0) AS NewAccounts,
ISNULL(tmpContactsCreated.NewContacts,0) AS NewContacts
I think there is a bug in your select, I believe your last line has to be this:
) as tmpContactsCreated ON (tmpContactsCreated.Year = tmpCreated.Year AND tmpContactsCreated.Month = tmpCreated.Month) OR
(tmpContactsCreated.Year = tmpActivity.Year AND tmpContactsCreated.Month = tmpActivity.Month)
But I would have to test this to be sure.
Adding in rollups is hard to do -- typically this is done externally to the SQL in the control or whatever displays the results. You could do something like this (contrived example):
SELECT 1 as reportOrder, date, amount, null as total
FROM invoices
UNION ALL
SELECT 2 , null, null, sum(amount)
FROM invoices
ORDER BY reportOrder, date
or you could not have the "extra" total column and put it in the amount column.