Question

I cant figure out how to do the following selection in sql:

Table:

id score1 score2 score3
0  null   null   3
0  1      null   3
1  null   2      null

select:

id score1 score2 score3
0  1      null   3
1  null   2      null

Thanks,

James

Answer 1

Aggregate the values using MAX

SELECT ID, 
       MAX(score1) score1,
       MAX(score2) score2,
       MAX(score3) score3
FROM tableName
GROUP BY ID