Re: Do we need use more meaningful variables to replace 0 in catalog head files? - Mailing list pgsql-hackers

Andres Freund <andres@anarazel.de> writes:
> On 2016-11-13 11:23:09 -0500, Tom Lane wrote:
>> We can't use CREATE FUNCTION as the representation in the .bki file,
>> because of the circularities involved (you can't fill pg_proc before
>> pg_type nor vice versa).  But I think Peter was suggesting that the
>> input to the bki-generator script could look like CREATE commands.
>> That's true, but I fear it would greatly increase the complexity
>> of the script for not much benefit.

> It'd also be very pg_proc specific, which isn't where I think this
> should go..

The presumption is that we have a CREATE command for every type of
object that we need to put into the system catalogs.  But yes, the
other problem with this approach is that you need to do a lot more
work per-catalog to build the converter script.  I'm not sure how
much of that could be imported from gram.y, but I'm afraid the
answer would be "not enough".
        regards, tom lane