Vincenzo Romano <vincenzo.romano@xxxxxxxxx> writes: > It sounds quite strange to me that numeric is faster than bigint. This test is 100% faulty, because it fails to consider the fact that the accumulator used by sum() isn't necessarily the same type as the input data. In fact we sum ints in a bigint and bigints in a numeric to avoid overflow. If you try it with max() you'd likely get less-surprising answers. regards, tom lane