Selecting the union part of an sql query - sql

Question

I have this query
SELECT
L.Account,
L.PaidOffDate
FROM
MARS.dbo.vw_Loans L
WHERE
L.isActive = 'False'
AND L.LoanStatus NOT LIKE '%REO%'
AND L.LoanStatus <> 'Trailing Claims'
)
UNION
-- loan numbers for REO sold
(
SELECT
L.Account,
R.SoldDate
FROM
MARS.dbo.vw_REO R
LEFT JOIN
MARS.dbo.vw_Loans L ON L.ConvertedToPropertyID = R.PropertyID
WHERE
R.Active = 0
AND R.Status = 'Sold'
AND L.isActive = 'False'
AND L.LoanStatus LIKE '%REO%'
)
I put this as a common table expression, how do I select R.SoldDate in that case?
Specifically I am trying to run this
CASE
WHEN Inactives.PaidOffDate IS NOT NULL
AND Inactives.PaidOffDate BETWEEN DATEADD(MONTH, DATEDIFF(MONTH, 0, #reportingDate), -1) AND #reportingDate
THEN Inactives.PaidOffDate
ELSE
CASE
WHEN Inactives.SoldDate IS NOT NULL
AND Inactives.SoldDate BETWEEN DATEADD(MONTH, DATEDIFF(MONTH, 0, #reportingDate), -1) AND #reportingDate
THEN Inactives.SoldDate
ELSE ''
END
END AS [CHECKING PIF DATE]
But I cannot select Inactives.SoldDate

Answer 1

I think what you are after here is a computed column, something like this:
SELECT
L.Account,
L.PaidOffDate,
'Payoff Date' AS Type
FROM MARS.dbo.vw_Loans L
WHERE
L.isActive = 'False' AND
L.LoanStatus NOT LIKE '%REO%' AND
L.LoanStatus <> 'Trailing Claims'
UNION ALL
SELECT
L.Account,
R.SoldDate,
'Sale Date'
FROM MARS.dbo.vw_REO R
LEFT JOIN MARS.dbo.vw_Loans L
ON L.ConvertedToPropertyID = R.PropertyID
WHERE
R.Active = 0 AND
R.Status = 'Sold' AND
L.isActive = 'False' AND
L.LoanStatus LIKE '%REO%';
The computed column Type keeps track of the origin of each record, so that you will know this after the union has been peformed. Note that I switched to UNION ALL, assuming that you always wanted to retain all records.

Answer 2

You need to put the values into separate columns rather than separate *rows. I think the logic you want is conditional logic:
SELECT L.Account,
(CASE WHEN L.LoanStatus NOT LIKE '%REO%' AND L.LoanStatus <> 'Trailing Claims'
THEN L.PaidOffDate
END) as PaidOffDate
(CASE WHEN L.LoanStatus LIKE '%REO%'
THEN R.SoldDate
END) as R.SoldDate
FROM MARS.dbo.vw_Loans L LEFT JOIN
MARS.dbo.vw_REO R
ON L.ConvertedToPropertyID = R.PropertyID AND
R.Active = 0 AND R.Status = 'Sold'
WHERE L.isActive = 'False';
The other possibility is that you actually want two separate CTEs, one for each part of the query.