http://109.livejournal.com/ ([identity profile] 109.livejournal.com) wrote in [personal profile] kika 2009-12-21 07:35 pm (UTC)

да, правильное решение - composite key (speed, host_id). неуникальные индексы у всех нормальных баз так и устроены (clustered key неявно хранится не только в листьях, но и ветках).
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