On Tue, 3 Sep 2019 at 16:01, Malcolm Matalka <mmatalka@gmail.com> wrote:
Hello, I'm implementing my own pgsql client for fun and I'm trying to understand how to send a Parse message. The final parameter to Parse is a series of Int32s with the description:
Specifies the object ID of the parameter data type. Placing a zero here is equivalent to leaving the type unspecified.
But where do I find the list of object IDs? Doing some internet searches didn't bring up much. Poking around the code I came across the file:
./src/backend/catalog/pg_type_d.h
And that has a series of OID's with integer values. Is this the mapping I'm looking for?
If so, It's not clear how to express some things. For example there is a MONEYARRAYOID, but no MONEYOID. Would I use, for example, NUMERICOID for money? If so, why does MONEYARRAYOID exist rather than using NUMERICOID?