Jun
28
2024
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Why Are Queries with Many IN Values More Expensive After Upgrading to MySQL 8.x?

IN Values More Expensive After Upgrading to MySQL 8Some 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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