Join two Queries so that the second query becomes a row in the results of query 1 - sql

Question

I have two queries that I would like to combine so i can make a chart out of the results.
The results have to be very specific or the chart will not display the information properly
I am using MS SQL in Crystal Reports 11
Below is the results I am looking for.
Date Invoice Type Amount
2012/08 Customer Payment 500
2012/08 Customer Invoice 1000
2012/08 Moving Balance 1500
2012/09 Customer Invoice 400
2012/09 Moving Balance 1900
2012/10 Interest 50
2012/10 Moving Balance 1950
So the First query returns the following results
Date Invoice Type Amount
2012/08 Customer Payment 500
2012/08 Customer Invoice 1000
2012/09 Customer Invoice 400
2012/10 Interest 50
and the second query returns
Date Invoice Type Amount
2012/08 Moving Balance 1500
2012/09 Moving Balance 1900
2012/10 Moving Balance 1950
The second query is very long and complicated with a join .
What is the best way of joining these two queries
so that I have one column called invoice Type ( as the chart is based on this field)
that covers all the invoice types plus the moving balance

Answer 1

I assume that the place of the Moving Balance rows inside the result set is important.
You can do something like this:
select date, invoice_type, amount
from
(
select date, invoice_type, amount from query1
union all
select date, invoice_type, amount from query2
)
order by date, case invoice_type when 'Moving Balance' then 1 else 0 end
This first appends the results of the second query to the results of the first query and then reorders the resulting list first by date and then by the invoice type in such a way that the row with Moving balance will come last.
With the actual queries you have given, it should look something like this:
select date, invoice_type, amount
from
(
SELECT
CONVERT(VARCHAR(7),case_createddate, 111) AS Date,
case_invoicetype as invoice_type,
Sum(case_totalexvat) as amount
FROM cases AS ca
WHERE case_primaryCompanyid = 2174 and
datediff(m,case_createddate,getDate())
union all
select
CONVERT(VARCHAR(7),ca.case_createddate, 111) AS Date,
'Moving Balance' as Invoice_Type,
sum(mb.Amount) as Amount
from
cases as ca
left join (
select
case_primaryCompanyId as ID,
case_createdDate,
case_TotalExVat as Amount
from
cases
) mb
on ca. case_primaryCompanyId = mb.ID
and ca.case_createdDate >= mb.case_CreatedDate
where
ca.case_primaryCompanyId = 2174 and
ca.case_createdDate > DATEADD(m, -12, current_timestamp)
group by
case_primaryCompanyId,
CONVERT(VARCHAR(7),ca.case_createddate, 111)
order by ca.case_primaryCompanyid, CONVERT(VARCHAR(7),ca.case_createddate, 111)
)
order by date, case invoice_type when 'Moving Balance' then 1 else 0 end

Answer 2

You can use Union and can use Order by clause
Select * from (Query 1
Union
Query 2
) as a Order by a.Date Asc