Tom Lane <[EMAIL PROTECTED]> writes: > Martijn van Oosterhout <kleptog@svana.org> writes: >> On Thu, Sep 07, 2006 at 11:57:26AM +0100, Gregory Stark wrote: >>> Just brain storming here. But what happens if we make Datum >>> 2*sizeof(pointer) >>> and stored the typmod and/or attlen in it? > >> The fundamental property of a Datum is that you can pass it by value to >> a C function. This generally means it has to fit in a register. On the >> whole, the CPU register size is the same as the pointer size, so >> 2*sizeof(pointer) is unlikely to fit... > > Not to mention the problem that such a change would break every single > datatype-manipulation function in both the core backend and every > user-written datatype. I don't think we're going there.
Sure, I'm just brain storming. Sometimes thinking about outlandish ideas can result in quiet reasonable ideas appearing down the line. -- Gregory Stark EnterpriseDB http://www.enterprisedb.com ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq
