Re: Improper use about DatumGetInt32

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