[ Charset ISO-8859-1 unsupported, converting... ]
> > For example we could count up distinct values for the first
> > column of an index by scanning its index relation.
>
> Oracle has index keys distribution page... And we have near empty
> meta-page for each index AM... And backend reads this page for
> each insert...
That certainly would make sense. We have hesitated to gather more
statistics because of the time involved. Fuller statistics on just the
indexed columns could be a big win and be done fairly quickly because
the rows are already sorted in the index.
-- Bruce Momjian | http://www.op.net/~candle pgman@candle.pha.pa.us | (610)
853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill,
Pennsylvania19026
