On Thu, Nov 11, 2010 at 10:02 AM, Itagaki Takahiro <itagaki.takah...@gmail.com> wrote: > If we reuse type IDs of arrays for multisets, the multisets would > have some special typmod. For example, typmod = 0 means multiset, > and positive value means array with max cardinality. Note that > the SQL standard doesn't mention about multi-dimensional arrays. > So, we can use typmod = -1 as a free-size and free-dimensional > array for backward compatibility.
I would really like to see us fix our type system so that it doesn't require this type of awful hack. But maybe that's asking too much of a patch to implement this feature. -- 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
