Hi, On 2020-09-21 14:08:22 -0400, Robert Haas wrote: > There is no SQL type corresponding to the C data type uint32, so I'm > not sure why we even have DatumGetUInt32. I'm sort of suspicious that > there's some fuzzy thinking going on there.
I think we mostly use it for the few places where we currently expose data as a signed integer on the SQL level, but internally actually treat it as a unsigned data. There's not a lot of those, but there e.g. is pg_class.relpages. There also may be places where we use it for functions that can be created but not called from SQL (using the INTERNAL type). - Andres
