On Tue, May 18, 2004 at 16:47:11 +0100, Dan Field <dof@llgc.org.uk> wrote:
> FROM
> da_records
> WHERE
> da_records.DESCRIPTION_CY ~* '.*Aberystwyth*.'
> OR
> da_records.TITLE_CY ~* '.*Aberystwyth*.'
> limit 100
>
> Is there a better way of matching the string? (Must be case insensitive)
This is going to require a sequential scan and if you aren't going to
hit 100 entries near the beginning of the table, you will be effectively
doing a full scan of the table.
You might try looking at the tsearch2 contrib entry (a package for full text
searching) as that will likely be able to help you out.