Re: [SQL] Use of index in 7.0 vs 6.5

[Bruce Momjian]

[ 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.

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