Logical Reads Aren’t Repeatable on Columnstore Indexes. (sigh)
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Sometimes I really hate my job. Forever now, FOREVER, it’s been a standard thing where I can say, “When you’re measuring storage performance during index and query tuning, you should always use logical reads, not physical reads, because logical reads are repeatable, and physical reads aren’t. Physical reads can change based on what’s in cache,…
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