{"id":7019,"date":"2024-11-14T15:36:54","date_gmt":"2024-11-14T07:36:54","guid":{"rendered":"https:\/\/fwq.ai\/blog\/7019\/"},"modified":"2024-11-14T15:36:54","modified_gmt":"2024-11-14T07:36:54","slug":"mysql-explain-%e4%b8%ad-filtered-%e5%ad%97%e6%ae%b5%ef%bc%9a%e5%80%bc%e8%b6%8a%e5%a4%a7%e8%b6%8a%e5%a5%bd%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/7019\/","title":{"rendered":"MySQL EXPLAIN \u4e2d filtered \u5b57\u6bb5\uff1a\u503c\u8d8a\u5927\u8d8a\u597d\uff1f"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/001\/246\/273\/173028366479122.jpg\" class=\"aligncenter\" title=\"MySQL EXPLAIN \u4e2d filtered \u5b57\u6bb5\uff1a\u503c\u8d8a\u5927\u8d8a\u597d\uff1f\u63d2\u56fe\" alt=\"MySQL EXPLAIN \u4e2d filtered \u5b57\u6bb5\uff1a\u503c\u8d8a\u5927\u8d8a\u597d\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>\u7406\u89e3 MySQL EXPLAIN filtered \u5b57\u6bb5\u7684\u542b\u4e49<\/strong><\/p>\n<p>\u5f53\u4f7f\u7528 EXPLAIN \u547d\u4ee4\u5206\u6790\u67e5\u8be2\u65f6\uff0c\u6211\u4eec\u4f1a\u770b\u5230 filtered \u5b57\u6bb5\u3002\u7f51\u4e0a\u7684\u4e00\u4e9b\u8bf4\u6cd5\u8ba4\u4e3a\u8be5\u5b57\u6bb5\u503c\u8d8a\u5927\u8d8a\u597d\uff0c\u4f46\u8fd9\u53ef\u80fd\u4ee4\u4eba\u56f0\u60d1\uff0c\u9700\u8981\u66f4\u6df1\u5165\u5730\u7406\u89e3\u5176\u542b\u4e49\u3002<\/p>\n<p>filtered \u5b57\u6bb5\u8868\u793a\u67e5\u8be2\u540e\u7531\u5b58\u50a8\u5f15\u64ce\u8fd4\u56de\u7684\u884c\u4e2d\u6ee1\u8db3\u67e5\u8be2\u6761\u4ef6\u7684\u767e\u5206\u6bd4\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u5b83\u8868\u793a\u88ab\u8fc7\u6ee4\u6389\u7684\u4e0d\u6ee1\u8db3\u67e5\u8be2\u6761\u4ef6\u7684\u884c\u6240\u5360\u7684\u6bd4\u4f8b\u3002<\/p>\n<p>\u56e0\u6b64\uff0c<strong>filtered 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\u5b57\u6bb5\u3002\u7f51\u4e0a\u7684\u4e00\u4e9b\u8bf4\u6cd5\u8ba4\u4e3a\u8be5\u5b57\u6bb5\u503c\u8d8a\u5927\u8d8a\u597d\uff0c\u4f46\u8fd9\u53ef\u80fd\u4ee4\u4eba\u56f0\u60d1\uff0c\u9700\u8981\u66f4\u6df1\u5165\u5730\u7406\u89e3\u5176\u542b\u4e49\u3002 filtered \u5b57\u6bb5\u8868\u793a\u67e5\u8be2\u540e\u7531\u5b58\u50a8\u5f15\u64ce\u8fd4\u56de\u7684\u884c\u4e2d\u6ee1\u8db3\u67e5\u8be2\u6761\u4ef6\u7684\u767e\u5206\u6bd4\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u5b83\u8868\u793a\u88ab\u8fc7\u6ee4\u6389\u7684\u4e0d\u6ee1\u8db3\u67e5\u8be2\u6761\u4ef6\u7684\u884c\u6240\u5360\u7684\u6bd4\u4f8b\u3002 \u56e0\u6b64\uff0cfiltered \u503c\u8d8a\u5927\uff0c\u8868\u660e\u88ab\u8fc7\u6ee4\u6389\u7684\u8bb0\u5f55\u8d8a\u5c11\uff0c\u4ece\u800c\u8868\u660e\u67e5\u8be2\u6027\u80fd\u76f8\u5bf9\u8f83\u597d\u3002\u8fd9\u4e0e&#8221;\u503c\u8d8a\u5c0f\u8d8a\u597d&#8221;\u7684\u8bf4\u6cd5\u76f8\u53cd\u3002 \u7136\u800c\uff0c\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0cfiltered 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