A method determines whether a structural indicator of a first table of results generated from a first data repository query matches a corresponding structural indicator of a second table of results generated from a substantially identical second data repository query. If the first and second table structural indicators match, then values from at least two corresponding cells from each of the first and second tables are aggregated. If the aggregated values from the first and second tables are identical, then an indication is provided indicating that the first data repository query results are accurate. Related apparatuses, computer program products, and computer systems are also described.