> -----Original Message-----
> From: pgsql-performance-owner(at)postgresql(dot)org
> [mailto:pgsql-performance-owner(at)postgresql(dot)org] On Behalf Of
>
> lc_collate is C, as are all the other lc settings.
>
> I have run the analyze commands.
>
> Still the same.
That is strange. I figured it had to be related to the locale and the LIKE
operator. I'm not an expert on these locale issues, but I'd be curious to
see if it would start using an index if you added an index like this:
CREATE INDEX test_index ON t_order (c_number varchar_pattern_ops);
Dave