On Sat, Jun 18, 2011 at 1:43 PM, Josh Kupershmidt <schmi...@gmail.com> wrote: >> Regarding to the data-type of objnamespace, how about an idea to define a new >> data type such as 'regschema' and cast objnamespace into this type? >> If we have such data type, user can reference string expression of schema >> name, >> and also available to use OID joins. > > Are you suggesting we leave the structure of pg_comments unchanged, > but introduce a new 'regschema' type so that if users want to easily > display the schema name of an object, they can just do: > > SELECT objnamespace::regschema, ... > FROM pg_comments WHERE ... ; > > That seems reasonable to me.
In the past I think the feeling has been that reg* types are primarily useful for objects with schema-qualified names. Translating a table OID into a table name is actually sort of non-trivial, at least if you want to schema-qualify its name when and only when necessary. The use case seems quite a bit weaker for schemas, since you can easily pull the right value from pg_namespace with a subquery if you are so inclined. It is perhaps worth noting that the patch now under discussion on this thread does something quite a lot different than what the subject would suggest. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
