https://ronaldbradford.com/tags/mysql-index/ Recent content in Mysql Index on Enterprise Data Architect | Principal Data Strategist | MySQL Subject Matter Expert | Author | Speaker Hugo -- gohugo.io en-us Tue, 15 Sep 2009 03:12:45 +0000 https://ronaldbradford.com/blog/explain-this-2009-09-14/ Tue, 15 Sep 2009 03:12:45 +0000 https://ronaldbradford.com/blog/explain-this-2009-09-14/ The EXPLAIN command is an important tool to review how a SQL query is executed and in this example includes what indexes are used. By adding a covering index I ended up with the following EXPLAIN plan I was unable to explain.