Matthew Wakeling <matt...@flymine.org> wrote: > any other tips? I would try adding an index on (objectid, start) and another on (objectid, end) and see how that first query does. Also, if id is a unique identifier, I'd recommend a unique constraint or (better) a primary key definition. Check the system tables to see whether all the existing indexes are actually being used -- if not, drop them. -Kevin
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