> > I assume the user is concerned about non-balanced btrees.
> That is correct!
> As I tested an example database with about 7 million entries on PostgreSQL V
> 6.5.2
> and the result of
> select count(*) from table;
> tooks about 3 minutes I have this concern.
> May be version 7.0.3 will give a better result.
The larger problem is that count(*) doesn't use the index at all. It
just does a sequential scan of the heap table.
-- Bruce Momjian | http://candle.pha.pa.us 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
