Ühel kenal päeval, K, 2006-03-22 kell 16:11, kirjutas Tom Lane:
> Peter Eisentraut <[EMAIL PROTECTED]> writes:
> > How does one get at the missing fields. The only way I know is
> > selecting from the sequence, but how does one work this into this
> > query? Somehow it seems that these things should be stored in a real
> > system catalog.
>
> Yeah. I've occasionally toyed with the idea that sequences should be
> rows in a single catalog instead of independent tables as they are now.
> This would make for a much smaller disk footprint (with consequent I/O
> savings) and would solve problems like the one you have.
Would it not make page locking problems much worse with all get_next()'s
competeing to update the same page?
At least unless you reserve one page for each sequence.
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Hannu
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TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
