{"id":7022,"date":"2024-11-14T08:32:33","date_gmt":"2024-11-14T00:32:33","guid":{"rendered":"https:\/\/fwq.ai\/blog\/7022\/"},"modified":"2024-11-14T08:32:33","modified_gmt":"2024-11-14T00:32:33","slug":"mysql-explain-%e4%b8%ad-filtered-%e5%ad%97%e6%ae%b5%e7%9a%84%e7%9c%9f%e5%ae%9e%e5%90%ab%e4%b9%89%ef%bc%9a%e5%ae%83%e7%9c%9f%e7%9a%84%e4%bb%a3%e8%a1%a8%e8%bf%87%e6%bb%a4%e6%8e%89%e7%9a%84%e8%ae%b0","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/7022\/","title":{"rendered":"MySQL EXPLAIN \u4e2d filtered \u5b57\u6bb5\u7684\u771f\u5b9e\u542b\u4e49\uff1a\u5b83\u771f\u7684\u4ee3\u8868\u8fc7\u6ee4\u6389\u7684\u8bb0\u5f55\u767e\u5206\u6bd4\u5417\uff1f"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/001\/246\/273\/173028613543806.jpg\" class=\"aligncenter\" title=\"MySQL EXPLAIN \u4e2d filtered \u5b57\u6bb5\u7684\u771f\u5b9e\u542b\u4e49\uff1a\u5b83\u771f\u7684\u4ee3\u8868\u8fc7\u6ee4\u6389\u7684\u8bb0\u5f55\u767e\u5206\u6bd4\u5417\uff1f\u63d2\u56fe\" alt=\"MySQL EXPLAIN \u4e2d filtered \u5b57\u6bb5\u7684\u771f\u5b9e\u542b\u4e49\uff1a\u5b83\u771f\u7684\u4ee3\u8868\u8fc7\u6ee4\u6389\u7684\u8bb0\u5f55\u767e\u5206\u6bd4\u5417\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>MySQL EXPLAIN \u4e2d filtered \u5b57\u6bb5\u7684\u56f0\u60d1<\/strong><\/p>\n<p>\u5728 MySQL \u4e2d\u4f7f\u7528 EXPLAIN \u547d\u4ee4\u67e5\u770b\u67e5\u8be2\u8ba1\u5212\u65f6\uff0c\u53ef\u80fd\u4f1a\u770b\u5230 filtered \u5b57\u6bb5\u3002\u8be5\u5b57\u6bb5\u8ba9\u4eba\u56f0\u60d1\uff0c\u56e0\u4e3a\u5b83\u770b\u8d77\u6765\u662f\u8868\u793a\u8fc7\u6ee4\u51fa\u7684\u8bb0\u5f55\u6240\u5360\u7684\u767e\u5206\u6bd4\u3002\u7136\u800c\uff0c\u5b9e\u9645\u60c5\u51b5\u5e76\u975e\u5982\u6b64\u3002<\/p>\n<p><strong>filtered \u5b57\u6bb5\u7684\u542b\u4e49<\/strong><\/p>\n<p>filtered \u5b57\u6bb5\u8868\u793a\u7684\u662f\u5b58\u50a8\u5f15\u64ce\u8fd4\u56de\u7684\u6570\u636e\u7ecf\u7531\u670d\u52a1\u5668\u5c42\u8fc7\u6ee4\u540e\uff0c\u5269\u4e0b\u591a\u5c11\u6ee1\u8db3\u67e5\u8be2\u6761\u4ef6\u7684\u8bb0\u5f55\u6570\u91cf\u7684\u767e\u5206\u6bd4\u3002\u56e0\u6b64\uff0c\u8be5\u503c\u8d8a\u5927\uff0c\u8868\u793a\u8fc7\u6ee4\u6389\u7684\u8bb0\u5f55\u8d8a\u5c11\uff0c\u67e5\u8be2\u6548\u7387\u5c31\u8d8a\u597d\u3002<\/p>\n<p><strong>\u5e38\u89c1\u7684\u8bef\u89e3<\/strong><\/p>\n<p>\u7f51\u4e0a\u7ecf\u5e38\u6709\u8bf4\u6cd5\u79f0 filtered \u503c\u8d8a\u5c0f\u8d8a\u597d\u3002\u8fd9\u662f\u56e0\u4e3a filtered \u503c\u5c0f\u901a\u5e38\u610f\u5473\u7740\u6709\u5f88\u591a\u8bb0\u5f55\u88ab\u8fc7\u6ee4\u6389\uff0c\u4ece\u800c\u5bfc\u81f4\u66f4\u9ad8\u7684\u8d44\u6e90\u6d88\u8017\u548c\u67e5\u8be2\u53d8\u6162\u3002\u7136\u800c\uff0c\u8fd9\u4e0d\u4e00\u5b9a\u603b\u662f\u6210\u7acb\u3002<\/p>\n<p><strong>filtered \u503c\u5c0f\u7684\u539f\u56e0<\/strong><\/p>\n<p>filtered \u503c\u5c0f\u53ef\u80fd\u662f\u7531\u4e8e\u51e0\u4e2a\u539f\u56e0\uff1a<\/p>\n<ul>\n<li> <strong>\u67e5\u8be2\u6761\u4ef6\u8fc7\u4e8e\u4e25\u683c\uff1a<\/strong>\u67e5\u8be2\u6761\u4ef6\u53ef\u80fd\u8fc7\u6ee4\u6389\u4e86\u5927\u91cf\u7684\u8bb0\u5f55\uff0c\u4ece\u800c\u5bfc\u81f4 filtered \u503c\u8f83\u5c0f\u3002<\/li>\n<li> <strong>\u7d22\u5f15\u6548\u7387\u4f4e\u4e0b\uff1a<\/strong>\u7d22\u5f15\u53ef\u80fd\u65e0\u6cd5\u6709\u6548\u8fc7\u6ee4\u51fa\u6ee1\u8db3\u67e5\u8be2\u6761\u4ef6\u7684\u8bb0\u5f55\uff0c\u5bfc\u81f4 filtered \u503c\u8f83\u5c0f\u3002<\/li>\n<li> <strong>\u5b58\u50a8\u5f15\u64ce\u4f18\u5316\uff1a<\/strong>\u67d0\u4e9b\u5b58\u50a8\u5f15\u64ce\uff0c\u5982 InnoDB\uff0c\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u4f1a\u9884\u5148\u7b5b\u9009\u6570\u636e\uff0c\u4ece\u800c\u5bfc\u81f4 filtered \u503c\u8f83\u5c0f\u3002<\/li>\n<\/ul>\n<p><strong>\u7ed3\u8bba<\/strong><\/p>\n<p>filtered \u5b57\u6bb5\u7684\u503c\u672c\u8eab\u5e76\u4e0d\u5177\u6709\u592a\u591a\u7684\u5b9e\u9645\u610f\u4e49\u3002\u5b83\u53ea\u662f\u4e00\u4e2a\u7528\u6765\u8861\u91cf\u5b58\u50a8\u5f15\u64ce\u4ece server \u5c42\u8fd4\u56de\u7684\u6570\u636e\u540e\uff0c\u5728\u591a\u5c11\u6570\u636e\u6ee1\u8db3\u67e5\u8be2\u6761\u4ef6\u7684\u6307\u6807\u3002\u6240\u4ee5\uff0c\u5e76\u4e0d\u5e94\u8be5\u4ec5\u4ec5\u6839\u636e filtered \u503c\u7684\u5927\u5c0f\u6765\u5224\u65ad\u7d22\u5f15\u6216\u67e5\u8be2\u6548\u7387\u7684\u9ad8\u4f4e\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fMySQL EXPLAIN \u4e2d filtered \u5b57\u6bb5\u7684\u771f\u5b9e\u542b\u4e49\uff1a\u5b83\u771f\u7684\u4ee3\u8868\u8fc7\u6ee4\u6389\u7684\u8bb0\u5f55\u767e\u5206\u6bd4\u5417\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MySQL EXPLAIN \u4e2d filtered \u5b57\u6bb5\u7684\u56f0\u60d1 \u5728 MySQL \u4e2d\u4f7f\u7528 EXPLAIN \u547d\u4ee4\u67e5\u770b\u67e5\u8be2\u8ba1\u5212\u65f6\uff0c\u53ef\u80fd\u4f1a\u770b\u5230 filtered \u5b57\u6bb5\u3002\u8be5\u5b57\u6bb5\u8ba9\u4eba\u56f0\u60d1\uff0c\u56e0\u4e3a\u5b83\u770b\u8d77\u6765\u662f\u8868\u793a\u8fc7\u6ee4\u51fa\u7684\u8bb0\u5f55\u6240\u5360\u7684\u767e\u5206\u6bd4\u3002\u7136\u800c\uff0c\u5b9e\u9645\u60c5\u51b5\u5e76\u975e\u5982\u6b64\u3002 filtered \u5b57\u6bb5\u7684\u542b\u4e49 filtered \u5b57\u6bb5\u8868\u793a\u7684\u662f\u5b58\u50a8\u5f15\u64ce\u8fd4\u56de\u7684\u6570\u636e\u7ecf\u7531\u670d\u52a1\u5668\u5c42\u8fc7\u6ee4\u540e\uff0c\u5269\u4e0b\u591a\u5c11\u6ee1\u8db3\u67e5\u8be2\u6761\u4ef6\u7684\u8bb0\u5f55\u6570\u91cf\u7684\u767e\u5206\u6bd4\u3002\u56e0\u6b64\uff0c\u8be5\u503c\u8d8a\u5927\uff0c\u8868\u793a\u8fc7\u6ee4\u6389\u7684\u8bb0\u5f55\u8d8a\u5c11\uff0c\u67e5\u8be2\u6548\u7387\u5c31\u8d8a\u597d\u3002 \u5e38\u89c1\u7684\u8bef\u89e3 \u7f51\u4e0a\u7ecf\u5e38\u6709\u8bf4\u6cd5\u79f0 filtered \u503c\u8d8a\u5c0f\u8d8a\u597d\u3002\u8fd9\u662f\u56e0\u4e3a filtered \u503c\u5c0f\u901a\u5e38\u610f\u5473\u7740\u6709\u5f88\u591a\u8bb0\u5f55\u88ab\u8fc7\u6ee4\u6389\uff0c\u4ece\u800c\u5bfc\u81f4\u66f4\u9ad8\u7684\u8d44\u6e90\u6d88\u8017\u548c\u67e5\u8be2\u53d8\u6162\u3002\u7136\u800c\uff0c\u8fd9\u4e0d\u4e00\u5b9a\u603b\u662f\u6210\u7acb\u3002 filtered \u503c\u5c0f\u7684\u539f\u56e0 filtered \u503c\u5c0f\u53ef\u80fd\u662f\u7531\u4e8e\u51e0\u4e2a\u539f\u56e0\uff1a \u67e5\u8be2\u6761\u4ef6\u8fc7\u4e8e\u4e25\u683c\uff1a\u67e5\u8be2\u6761\u4ef6\u53ef\u80fd\u8fc7\u6ee4\u6389\u4e86\u5927\u91cf\u7684\u8bb0\u5f55\uff0c\u4ece\u800c\u5bfc\u81f4 filtered \u503c\u8f83\u5c0f\u3002 \u7d22\u5f15\u6548\u7387\u4f4e\u4e0b\uff1a\u7d22\u5f15\u53ef\u80fd\u65e0\u6cd5\u6709\u6548\u8fc7\u6ee4\u51fa\u6ee1\u8db3\u67e5\u8be2\u6761\u4ef6\u7684\u8bb0\u5f55\uff0c\u5bfc\u81f4 filtered \u503c\u8f83\u5c0f\u3002 \u5b58\u50a8\u5f15\u64ce\u4f18\u5316\uff1a\u67d0\u4e9b\u5b58\u50a8\u5f15\u64ce\uff0c\u5982 InnoDB\uff0c\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u4f1a\u9884\u5148\u7b5b\u9009\u6570\u636e\uff0c\u4ece\u800c\u5bfc\u81f4 filtered \u503c\u8f83\u5c0f\u3002 \u7ed3\u8bba filtered \u5b57\u6bb5\u7684\u503c\u672c\u8eab\u5e76\u4e0d\u5177\u6709\u592a\u591a\u7684\u5b9e\u9645\u610f\u4e49\u3002\u5b83\u53ea\u662f\u4e00\u4e2a\u7528\u6765\u8861\u91cf\u5b58\u50a8\u5f15\u64ce\u4ece server \u5c42\u8fd4\u56de\u7684\u6570\u636e\u540e\uff0c\u5728\u591a\u5c11\u6570\u636e\u6ee1\u8db3\u67e5\u8be2\u6761\u4ef6\u7684\u6307\u6807\u3002\u6240\u4ee5\uff0c\u5e76\u4e0d\u5e94\u8be5\u4ec5\u4ec5\u6839\u636e filtered \u503c\u7684\u5927\u5c0f\u6765\u5224\u65ad\u7d22\u5f15\u6216\u67e5\u8be2\u6548\u7387\u7684\u9ad8\u4f4e\u3002 \u4ee5\u4e0a\u5c31\u662fMySQL EXPLAIN \u4e2d filtered 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