MySQL optimization

MySQL optimization

The Persistent MySQL 8 Challenge: Still Unresolved Since 5.7?

MySQL `prefer_ordering_index` — Should You Set It ON or OFF? 📌 Overview In MySQL query optimization, one setting often sparks debate: SET optimizer_switch = 'prefer_ordering_index=off'; By default, `prefer_ordering_index` is ON. But many DBAs and developers still ask: Should we keep it ON — or