Subject | RE: [firebird-support] Searching on BLOB data - case sensitive |
---|---|
Author | Kevin Day Programming |
Post date | 2005-06-03T01:11:14Z |
>All these searches involve converting all fields to upper case, thentesting
>for a match - quite heavy on large numbers of records.be
>
>It's far better to dedicate a field in your table to storing the upper case
>version of a field, and use that in your searches. That way, an index can
>used on it, and you save doing table scans converting the case before eachHowever if you actually need a 'contains' search whether that be with "LIKE"
>comparison.
or "CONTAINING", an index is not used regardless. Or am I mistaken here.
regards,
Kevin.