Re: [PATCHES] Non-transactional pg_class, try 2

On Tue, 2006-06-27 at 10:04 +0200, Zeugswetter Andreas DCP SD wrote:

> Simon wrote:
> > Suggest that we prevent write operations on Frozen tables by revoking
> all INSERT, UPDATE or DELETE rights held, then enforcing a check during
> GRANT to prevent them being re-enabled. Superusers would need to check
> every time. If we dont do this, then we will have two contradictory
> states marked in the catalog - privilges saying Yes and freezing saying
> No.
> 
> No, I'd not mess with the permissions and return a different error when
> trying to
> modify a frozen table. (It would also be complicated to unfreeze after
> create database)
> We should make it clear, that freezing is no replacement for revoke.

That was with a mind to performance. Checking every INSERT, UPDATE and
DELETE statement to see if they are being done against a frozen table
seems like a waste.

There would still be a specific error message for frozen tables, just on
the GRANT rather than the actual DML statements.

--  Simon Riggs              EnterpriseDB   http://www.enterprisedb.com