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Displaying posts with tag: range optimization (reset)
Why Are Queries with Many IN Values More Expensive After Upgrading to MySQL 8.x?

Some of our Percona Support customers report performance degradation after a major MySQL upgrade, and there can be many different reasons for this. These days, the most common major upgrade is from MySQL 5.7 (which recently reached EOL) to 8.0, and I am going to emphasize one important case that affects many database instances. Range […]

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