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Presented at the 2012 CodeConnexx conference. From the official conference description at Just about anyone can write a basic SQL query for a table. Not everyone can write a *good* query though - that takes practice and knowing how to understand what the optimizer is doing with the query. Oracle ACE Director for MySQL Sheeri Cabral will teach the basics of query optimization so you keep your application engaging the user rather then showing the progress bar as they wait on the database.