The general knowledge is that numerics are slower than integers/float, but offer precision and ranges that are better. While I understand what is slow, I don't really know how much slower numerics are. So let's test it.

On 11th of November, Fujii Masao committed patch: Add generate_series(numeric, numeric). Платон Малюгин Reviewed by Michael Paquier, Ali Akbar and Marti Raudsepp