Re: [INTERFACES] Upgrading the backend's error-message infrastructure

Peter Eisentraut <peter_e@gmx.net>

From: Peter Eisentraut <peter_e@gmx.net>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: pgsql-hackers@postgreSQL.org, <pgsql-interfaces@postgreSQL.org>
Date: 2003-03-16T14:06:19Z
Lists: pgsql-hackers
Tom Lane writes:

> Given that we now need order-of-thirty possible field types, do you feel
> uncomfortable with a single-byte field identifier in the FE/BE protocol?
> I'm still leaning that way on the grounds of compactness and programming
> simplicity, but I can see where someone might want to argue it won't do
> in the long run.

There's a possible solution:  SQL99 part 3 defines numerical codes for
each of these fields (table 12/section 5.14).  The codes are between
around 0 and 40.  (Don't be confused by the negative code numbers in the
table; those are only for use within ODBC.)

-- 
Peter Eisentraut   peter_e@gmx.net