[foobiekr]

There's also a ton of optimization savings in doing this. your DB already has to move from media to cache, so why not do the pipelined processing in place where it's cheapest?

Instead, we haul that shit to the NIC, then across the network, then copy it into memory on some server (probably inefficiently), do the operations there, or we have to reinvent this with pushdown functions for distributed databases.

There are many cases where moving function-to-data is the right answer.