Select with Case - amalgamating results into single record - sql-server

Question

I have a query as follows
SELECT
FGB.TEMPLATE_DETAILS_REF, FGB.TEMPLATE_STRUCTURE_REF, FGB.DFEE_ELEMENT,
CASE
WHEN Condition = 'A' THEN SUM(FGS.Weighted) END AS CondA,
CASE
WHEN Condition = 'B' THEN SUM(FGS.Weighted) END AS CondB,
CASE
WHEN Condition = 'C' THEN SUM(FGS.Weighted) END AS CondC,
CASE
WHEN Condition = 'D' THEN SUM(FGS.Weighted) END AS CondD
FROM FGBlockSummary AS FGB INNER JOIN
FGSurveyItem AS FGS ON FGB.TEMPLATE_DETAILS_REF = FGS.TEMPLATE_DETAILS_REF AND FGB.TEMPLATE_STRUCTURE_REF = FGS.TEMPLATE_STRUCTURE_REF AND
FGB.DFEE_ELEMENT = FGS.DFEE_ELEMENT
GROUP BY FGB.TEMPLATE_DETAILS_REF, FGB.TEMPLATE_STRUCTURE_REF, FGB.DFEE_ELEMENT, FGS.Condition
which produces results as follows:
16 109 Ceilings NULL 14101.47 NULL NULL
16 109 Ceilings NULL NULL 227.68 NULL
How can I amalgamate the results into a single row eg
16 109 Ceilings NULL 14101.47 227.68 NULL
Thanks

Answer 1

Is this what you're looking for?
I moved the SUM outside of the CASEs and eliminated FGS.Condition from the GROUP BY. It'll have the side-effect of changing your NULL values to '0', but that might be tolerable?
SELECT
FGB.TEMPLATE_DETAILS_REF
,FGB.TEMPLATE_STRUCTURE_REF
,FGB.DFEE_ELEMENT
,CondA = SUM(
CASE
WHEN FGS.Condition = 'A' THEN FGS.Weighted
ELSE 0
END)
,CondB = SUM(
CASE
WHEN FGS.Condition = 'B' THEN FGS.Weighted
ELSE 0
END)
,CondC = SUM(
CASE
WHEN FGS.Condition = 'C' THEN FGS.Weighted
ELSE 0
END)
,CondD = SUM(
CASE
WHEN FGS.Condition = 'D' THEN FGS.Weighted
ELSE 0
END)
FROM
FGBlockSummary AS FGB
INNER JOIN
FGSurveyItem AS FGS
ON
FGB.TEMPLATE_DETAILS_REF = FGS.TEMPLATE_DETAILS_REF
AND FGB.TEMPLATE_STRUCTURE_REF = FGS.TEMPLATE_STRUCTURE_REF
AND FGB.DFEE_ELEMENT = FGS.DFEE_ELEMENT
GROUP BY
FGB.TEMPLATE_DETAILS_REF
,FGB.TEMPLATE_STRUCTURE_REF
,FGB.DFEE_ELEMENT;