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Reasons Why Slow Queries Might Not Use Much CPU

Erik Darling has a compendium for us:

No one ever says a broken record is right twice a day, perhaps because DJs are far more replaceable than clock makers.

I say that only to acknowledge that I may sounds like a broken record when I say that when you’re tuning a query, it’s quite important to compare wall clock time and duration. Things you should note:

Click through for those things.

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