Martijn van Oosterhout <kleptog@svana.org> writes: > On Thu, Dec 21, 2006 at 10:50:59AM -0500, Tom Lane wrote: >> Really? To me that's one of a large number of questions that are >> unresolved about how we'd do this. You can make a case for either >> choice in quite a number of places.
> Can we? For anything of any permenence (view definitions, rules, > compiled functions, plans, etc) you're going to want the physical > number, for the same reason we store the oids of functions and tables. Not if we intend to rearrange the physical numbers during column add/drop to provide better packing. You could make a case that we need *three* numbers: a permanent column ID, a display position, and a storage position. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq