Performance Tuning Starts with Your SQL SELECT Statement
1:04
YouTubeManish Sharma
Performance Tuning Starts with Your SQL SELECT Statement
Are you using EXPLAIN PLAN Correctly Most people think SELECT is just there to fetch data. In this video, we compare the execution plan of a SELECT * statement against a properly written SELECT with specific columns and a WHERE clause, and see exactly how Rows and Bytes drop before we even touch cost or indexes. If you're learning SQL ...
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