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                MySQL的優化主要分為結構優化(Scheme optimization)和查詢優化(Query optimization)。本章討論的高性能索引策略主要屬于結構優化范疇。本章的內容完全基于上文的理論基礎,實際上一旦理解了索引背后的機制,那么選擇高性能的策略就變成了純粹的推理,并且可以理解這些策略背后的邏輯。
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