This effectively give the tree hassle to the database.

Well, it's more saying to the database "please perform a linear search for me". Kind of an overkill to use a database for that, you might as well use a grep statement in Perl. And no, creating indices on start_value and end_value isn't going to help you in this case - it may still lead to a table scan (and hence a linear search), and just report a single match.

Abigail

In reply to Re: indexing segments by Abigail-II
in thread indexing segments by glwtta

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