TSQL use inner select result for outer FROM - sql

Question

I have a query that looks like the following:
A.[approvalDate],
A.[locationID],
B.[FirstName] + ' ' + B.[LastName] AS nomineeName,
B.[ntid] AS nomineeNTID,
B.[qid] AS nomineeQID,
B.[GeoLocationDesc] as locationName,
C.[FirstName] + ' ' + C.[LastName] AS submitName,
C.[ntid] AS submitNTID,
C.[empID] submitEmpID,
D.[categoryName],
(
SELECT G.[qid] FROM empowermentProxies AS G WHERE G.[proxy] = #QID
),
E.[FirstName] + ' ' + E.[LastName] as behalfOf,
E.[NTID] AS behalfOfNTID
FROM empowermentSubmissions AS A
INNER JOIN
empTable AS B
ON A.[nomineeQID] = B.[qid]
LEFT OUTER JOIN
empTable AS C
ON A.[subQID] = C.[qid]
INNER JOIN
empowermentCategories AS D
ON A.[categoryID] = D.[catID]
JOIN empTable AS E
ON E.[qid] = G.[qid]
WHERE #QID IN (SELECT proxy FROM empowermentProxies)
AND A.[statusID] = 1
FOR XML PATH ('data'), TYPE, ELEMENTS, ROOT ('root');
I am trying to user the result of the inner select G.qid in the join statement but keep getting an error saying G isn't bound.
Is this possible to do? There should only be 1 result returned from the inner select.

Answer 1

Just move it to the from clause:
. . .
D.[categoryName],
Q.g_qid,
. . .
FROM empowermentSubmissions A INNER JOIN
empTable B
ON A.[nomineeQID] = B.[qid] LEFT OUTER JOIN
empTable C
ON A.[subQID] = C.[qid] INNER JOIN
empowermentCategories D
ON A.[categoryID] = D.[catID] CROSS JOIN
(SELECT G.[qid] as g_qid
FROM empowermentProxies G
WHERE G.[proxy] = #QID
) G JOIN
empTable E
ON E.[qid] = G.[qid]

Answer 2

please try below one
A.[approvalDate],
A.[locationID],
B.[FirstName] + ' ' + B.[LastName] AS nomineeName,
B.[ntid] AS nomineeNTID,
B.[qid] AS nomineeQID,
B.[GeoLocationDesc] as locationName,
C.[FirstName] + ' ' + C.[LastName] AS submitName,
C.[ntid] AS submitNTID,
C.[empID] submitEmpID,
D.[categoryName],
sol1.qid,
E.[FirstName] + ' ' + E.[LastName] as behalfOf,
E.[NTID] AS behalfOfNTID
FROM empowermentSubmissions AS A
INNER JOIN
empTable AS B
ON A.[nomineeQID] = B.[qid]
LEFT OUTER JOIN
empTable AS C
ON A.[subQID] = C.[qid]
INNER JOIN
empowermentCategories AS D
ON A.[categoryID] = D.[catID]
JOIN empTable AS E
ON E.[qid] = G.[qid]
left join (SELECT G1.[qid] FROM empowermentProxies AS G1 WHERE G.[proxy] = #QID) sol1
on g.qid=sol1.qid
WHERE #QID IN (SELECT proxy FROM empowermentProxies)
AND A.[statusID] = 1
FOR XML PATH ('data'), TYPE, ELEMENTS, ROOT ('root');