public void GroupedMapReduce() { var query = testTable.GroupedMapReduce( to => to.Name, // group to => 1.0, // map (leftCount, rightCount) => leftCount + rightCount // reduce ); int count = 0; foreach (var record in connection.Run(query)) { var groupName = record.Item1; var reduceCount = record.Item2; switch (groupName) { case "1": case "3": case "6": Assert.That(reduceCount, Is.EqualTo(2)); break; case "2": Assert.That(reduceCount, Is.EqualTo(3)); break; case "4": case "5": case "7": Assert.That(reduceCount, Is.EqualTo(1)); break; } ++count; } Assert.That(count, Is.EqualTo(7)); }