A very good article : http://coskan.wordpress.com/2011/02/17/plan-stability-through-upgrade-why-is-my-plan-changed-new-optimizer-parameters/
Everything Changes
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I saw a recent tweet (on Bluesky) from SQLDaily highlighting a blog note
that Lukas Eder wrote in 2016 with the title: “Avoid using COUNT() in SQL
when you...
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