| http://www.w3.org/ns/prov#value | - You need to group by all the fields other than the ones you are summing.For example, using the table:f1 | f2 | f3---------------- f | b | 1 f | c | 3 h | d | 5For the query:select f1, f2, sum(f3)from tablegroup by f1In this case, you would be missing f2 in the group by.
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