On Mon, Oct 28, 2013 at 11:12 AM, Tom Lane <t...@sss.pgh.pa.us> wrote: > The idea I'm thinking about at the moment is that toast tokens of this > sort might each contain a function pointer to the required flattening > function. This avoids an expensive catalog lookup when flattening is > needed. We'd never accept such a thing for data destined for disk; > but since the whole point here is that such data lives only in memory, > I can't see anything wrong with including a function pointer in it.
This might be OK, but it bloats the in-memory representation. For small data types like numeric that might well be significant. -- 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
