Covering Index


An index, when used for an index-only scan.

About the Author

Photo of Markus Winand
Markus Winand tunes developers for high SQL performance. He also published the book SQL Performance Explained and offers in-house training as well as remote coaching at http://winand.at/

Recent Questions at Ask.Use-The-Index-Luke.com

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Database design suggestions for a data scraping/warehouse application?

17 hours ago Markus Winand ♦♦ 656
mysql optimization database
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How to query for "previous page" with keyset pagination?

Aug 22 at 04:21 alextsg 16
pagination postgresql
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