Question

Please check below table :

Id    Code     Name      State       District     Status   
-----------------------------------------------------------
1     10001    ABC       Gujarat     Jamnagar       1
2     10002    BCA       Gujarat     Amreli         0
3     10003    XYZ       NJ          ACX            1
4     10001    VBC       Gujarat     Jamnagar       1

I have query below

SELECT STATE,
    District,
    SUM(CASE 
            WHEN STATUS = 0
                THEN 1
            ELSE 0
            END) Active,
    SUM(CASE 
            WHEN STATUS = 1
                THEN 1
            ELSE 0
            END) InActive
FROM TableA
GROUP BY STATE,
    District

Now it will return following result to me

State   District  Active  InActive
------------------------------------
Gujarat  Jamnagar   0       2
Gujarat  Amreli     1       0
NJ       ACX        0       1

But I need to count single row whose Code is Same, So it will return InActive as 1 for
State Gujarat and District Jamnagar not 2.

How can I achieve that?

Answer 1

How about you distinctly select all columns in a subquery?

SELECT STATE,
    District,
    SUM(CASE 
            WHEN STATUS = 0
                THEN 1
            ELSE 0
            END) Active,
    SUM(CASE 
            WHEN STATUS = 1
                THEN 1
            ELSE 0
            END) InActive
FROM (
    SELECT DISTINCT STATE,
        District,
        STATUS
    FROM tableA
    ) a
GROUP BY STATE,
    District

SQLFiddle Demo