How to use group by with null values - sql

Question

I have a SQL query which results as
personCount toatlMinute Meal QPWaiting NoOfCR CRNo
0 2 NULL NULL NULL NULL
1 7 NULL NULL NULL NULL
2 8 NULL NULL NULL NULL
3 16 NULL NULL NULL NULL
4 128 NULL NULL NULL NULL
0 NULL NULL 14 2 5555, 6666
3 NULL NULL NULL NULL NULL
4 NULL NULL NULL NULL NULL
2 NULL NULL 14 2 5555, 6666
3 NULL NULL 14 2 5555, 6666
4 NULL NULL 14 2 5555, 6666
0 NULL 2 NULL NULL NULL
Now I want to use group by 1st column (personcount) and want to sum 2nd and 3rd column
but don't want to sum 4th, 5th and 6th column. But output should show all data in one for unique person count.
SELECT
personCount,
SUM(toatlMinute) toatlMinute,
SUM(Meal) Meal,
QPWaiting,
NoOfNCR AS NoOfCR,
NCRNo AS CRNo
FROM
#OperatorData
GROUP BY
personCount, QPWaiting, NoOfNCR, NCRNo
and it gives output as
personCount toatlMinute Meal QPWaiting NoOfCR CRNo
0 2 2 NULL NULL NULL
0 NULL NULL 14 2 5555, 6666
1 7 NULL NULL NULL NULL
2 8 NULL NULL NULL NULL
2 NULL NULL 14 2 5555, 6666
3 16 NULL NULL NULL NULL
3 NULL NULL 14 2 5555, 6666
4 128 NULL NULL NULL NULL
4 NULL NULL 14 2 5555, 6666
A you can see there are two rows for 0 person count. However I want only one row.
How can get this output? Kindly advise

Answer 1

If you want to get values from the last three columns, so the NULL values go away, then use max() or min():
SELECT personCount, SUM(toatlMinute) as toatlMinute, SUM(Meal) as Meal,
max(QPWaiting) as QPWaiting, max(NoOfNCR) AS NoOfCR, max(NCRNo) AS CRNo
FROM #OperatorData
GROUP BY personCount;