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Last Updated: September 29, 2026
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Two engineers write SQL queries that return exactly the same result. One finishes in 3 seconds. The other scans billions of ... Your EXPLAIN output shows a cost of 16370.00, but the table only has 6370 pages. Where does the rest come from? In this first ... This is 1st part of video explaining typical mistakes during Gate Smashers Shorts: Watch quick concepts & short videos here: youtube.com/ for ... We are moving into the nasty topic in module In this video, I walk you through the key concepts of In this lesson, we talk about what a Well hello and welcome to my video lecture on Performance tuning begins with understanding execution plan and finding & fixing expensive operators one by one in below flow: ... In above lecture new SQL Server 2012 - SQL Server 2016 TSQL features are covered. Eg: 1. Running total using SUM and OVER ... Namastey All, Welcome to Select Star. Today we will be discussing how to check if your
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