Hi, I have a table that stores article views per day per article:
`post_id` int(11) NOT NULL, `date` date NOT NULL, `views` int(11) NOT NULL A couple of entries: 1987 2009-10-04 1744 1583 2009-10-04 2626 1238 2009-10-04 2211 This works fine - but I am now trying to figure out whats the best way to add an index to this so that if I am running a query limiting between dates I dont have to run through all the hundreds of thousands of records to find a couple hundred results. my query looks something like this (for 7 days top articles): SELECT articles.*, sum(views) AS views FROM articles LEFT JOIN article_views ON article_views.article_id = articles.id WHERE ( date <= '2009-10-07' AND date >= '2009-10-01') GROUP BY article_id Any help would be greatly appreciated. Thanks Ian
