"Andrea Galeazzi" <[email protected]> wrote in
message news:[email protected]
> I meant:
> SELECT title FROM tracks
> WHERE  title >= :last_title AND
>  (title>:last_title OR id>:last_id) AND title LIKE %Mad%
> ORDER BY title,id;
> better than
> SELECT title FROM tracks
> WHERE title LIKE %Mad% AND
>  title >= :last_title AND
>  (title>:last_title OR id>:last_id)
> ORDER BY title,id;
>
> ?

These two should be equivalent.

> Furthermore
> can the index improve select performance in both previous
> cases?

Yes, an index on (title, id) should help in both cases.

Igor Tandetnik



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