On Tue, May 10, 2011 at 10:29 PM, Joseph Adams <joeyadams3.14...@gmail.com> wrote: > It seems to me a reasonable way to implement VARIANT would be to have > a data type called VARIANT that stores an OID of the inner type at the > beginning, followed by the binary data.
That's likely to be how it gets implemented, but you seem to have missed the point of some of the discussion upthread: the big problem with that is that someone might type "DROP TYPE foo", and when they do, you need an efficient way to figure out whether foo is in use inside an instance of the variant type anywhere in the system. The devil is in the details... -- 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
