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4. Query Performance Optimization - High Performance MySQL, 2nd Edition [Book]
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MySQL Tutorial - MySQL By Examples for Beginners
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SUBSTRING, PATINDEX and CHARINDEX string functions in SQL queries
![4. Query Performance Optimization - High Performance MySQL, 2nd Edition [Book]](https://www.oreilly.com/api/v2/epubs/9780596101718/files/httpatomoreillycomsourceoreillyimages206446.png "4. Query Performance Optimization - High Performance MySQL, 2nd Edition [Book]")
4. Query Performance Optimization - High Performance MySQL, 2nd Edition [Book]
