SQL SERVER Remove Bookmark Key Lookup 4 Different Ideas
Posted by: Journey to SQL Authority with Pinal Dave,
on 22 Nov 2009 |
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I quite often get request to summarized my ideas about Removing bookmark lookup on this blog post. Bookmark lookup or key lookup are bad for any query as they force query engine to lookpup corresponding row in the table or index as it does not find required data from just reading the data.Here are list [...]...