{"id":1724,"date":"2023-06-19T18:07:44","date_gmt":"2023-06-19T10:07:44","guid":{"rendered":"https:\/\/xinchewhd.com.cn\/?p=1724"},"modified":"2023-06-19T18:07:44","modified_gmt":"2023-06-19T10:07:44","slug":"9%e5%a4%a7%e8%a1%a8%e8%ae%be%e8%ae%a1%e4%bc%98%e5%8c%96%e6%96%b9%e6%b3%95%ef%bc%8c%e8%ae%a9-mysql-%e6%80%a7%e8%83%bd%e9%a3%9e%e5%8d%87%ef%bc%81","status":"publish","type":"post","link":"https:\/\/xinchewhd.com.cn\/index.php\/mysql\/9%e5%a4%a7%e8%a1%a8%e8%ae%be%e8%ae%a1%e4%bc%98%e5%8c%96%e6%96%b9%e6%b3%95%ef%bc%8c%e8%ae%a9-mysql-%e6%80%a7%e8%83%bd%e9%a3%9e%e5%8d%87%ef%bc%81\/","title":{"rendered":"9\u5927\u8868\u8bbe\u8ba1\u4f18\u5316\u65b9\u6cd5\uff0c\u8ba9 MySQL \u6027\u80fd\u98de\u5347\uff01"},"content":{"rendered":"
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\u8868\u8bbe\u8ba1\u4f18\u5316<\/strong>\uff0c\u662f MySQL \u8c03\u4f18<\/strong>\u4e2d\u81f3\u5173\u91cd\u8981\u7684\u4e00\u4e2a\u73af\u8282\uff0c\u4e5f\u662f\u5927\u5382\u9ad8\u9891\u9762\u8bd5\u9898<\/strong>\u4e4b\u4e00\u3002<\/span><\/p>\n

\u4e00\u4e2a\u4f18\u79c0\u5408\u7406\u7684\u8868\u8bbe\u8ba1\u4f18\u5316\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u51cf\u5c11\u7ebf\u4e0a\u95ee\u9898<\/strong>\uff0c\u6781\u5927\u5730\u63d0\u5347 MySQL \u7684\u6027\u80fd\u548c\u7a33\u5b9a\u6027<\/strong>\u3002<\/span><\/p>\n

\u672c\u6587\u4e3b\u8981\u4ecb\u7ecd 9 \u4e2a\u5e38\u7528\u7684\u4f18\u5316\u8868\u8bbe\u8ba1\u65b9\u6cd5\u3002<\/span><\/span><\/p>\n

\u6587\u672b\u9001\uff1a\u300aMySQL \u9762\u8bd5\u8def\u7ebf\u6700\u5168\u6574\u7406\uff08\u9644\u9762\u8bd5\u9898\u7cbe\u9009\u53ca\u7b54\u6848\uff09\u300b<\/a><\/span><\/strong><\/p>\n

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01<\/strong><\/span><\/section>\n<\/section>\n<\/section>\n
\u907f\u514d\u6df1\u5206\u9875<\/strong> <\/span><\/section>\n<\/section>\n<\/section>\n<\/section>\n<\/section>\n


<\/p>\n

\u4ece MySQL \u4e2d\u67e5\u8be2\u5927\u91cf\u6570\u636e\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u5206\u9875\u6765\u907f\u514d\u4e00\u6b21\u6027\u8fd4\u56de\u5927\u91cf\u7684\u6570\u636e\u3002<\/span>
<\/p>\n

\u4f46\u5982\u679c\u5206\u9875\u6df1\u5ea6\u592a\u6df1\uff0c\u5c31\u4f1a\u5f71\u54cd MySQL \u7684\u6027\u80fd\u3002\u56e0\u6b64\uff0c\u8981\u907f\u514d\u6df1\u5206\u9875\uff0c\u4fdd\u8bc1\u6bcf\u4e00\u9875\u7684\u6570\u636e\u91cf\u4e0d\u8981\u8fc7\u591a\u3002<\/strong><\/span><\/p>\n

\u4f8b\u5982\uff1a<\/span><\/p>\n

\u6709\u4e00\u4e2a\u7528\u6237\u8868\uff0c\u91cc\u9762\u5b58\u50a8\u4e86 1000 \u4e07\u6761\u7528\u6237\u8bb0\u5f55\u3002<\/span><\/p>\n

\u9700\u8981\u5728\u7f51\u9875\u4e0a\u663e\u793a\u7b2c 10000-10020 \u6761\u8bb0\u5f55\uff0c\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0bSQL \u67e5\u8be2\uff1a<\/span><\/p>\n

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  • <\/li>\n<\/ul>\n
    SELECT * FROM users LIMIT 10000, 20;<\/span><\/code><\/pre>\n<\/section>\n
    <\/pre>\n
    \u9700\u8981\u663e\u793a\u7b2c 9999990-10000010 \u6761\u8bb0\u5f55\uff0c\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b SQL \u67e5\u8be2\uff1a<\/span><\/p>\n
    \n
      \n
    • <\/li>\n<\/ul>\n
      SELECT * FROM users LIMIT 9999990, 20;<\/span><\/code><\/pre>\n<\/section>\n
      <\/pre>\n
      \u8fd9\u4e2a\u65f6\u5019\uff0cMySQL \u8981\u626b\u63cf 9999990 \u6761\u8bb0\u5f55\u624d\u80fd\u8fd4\u56de\u7ed3\u679c\uff0c\u8fd9\u5c31\u4e25\u91cd\u5f71\u54cd\u5230\u4e86 MySQL \u7684\u6027\u80fd\u3002<\/span><\/p>\n

      <\/span><\/p>\n
      \n
      \n
      \n
      \n
      \n
      \n
      02<\/strong><\/span><\/section>\n<\/section>\n<\/section>\n
      \u5355\u8868\u5b57\u6bb5\u4e0d\u8981\u8d85\u8fc730\u4e2a<\/strong> <\/span><\/section>\n<\/section>\n<\/section>\n<\/section>\n<\/section>\n

      <\/p>\n

      <\/p>\n
      \u5728\u8bbe\u8ba1\u8868\u7ed3\u6784\u65f6\uff0c\u907f\u514d\u5c06\u8fc7\u591a\u7684\u5b57\u6bb5\u5b58\u50a8\u5728\u5355\u4e2a\u8868\u4e2d\u3002<\/strong><\/span><\/p>\n
      \u5982\u679c\u4e00\u4e2a\u8868\u4e2d\u7684\u5b57\u6bb5\u592a\u591a\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4 MySQL \u6027\u80fd\u4e0b\u964d\u3001\u5de5\u4f5c\u91cf\u589e\u52a0\u3002<\/span><\/p>\n
      \n
      \u4f8b\u5982\uff1a<\/span><\/p>\n
      \u6709\u4e00\u4e2a\u7528\u6237\u8868\uff0c\u9700\u8981\u5b58\u50a8\u7528\u6237\u7684\u57fa\u672c\u4fe1\u606f\u3001\u8ba2\u5355\u4fe1\u606f\u3001\u6536\u8d27\u5730\u5740\u7b49\u4fe1\u606f\u3002<\/span><\/p>\n
      \u6211\u4eec\u53ef\u4ee5\u5c06\u7528\u6237\u4fe1\u606f\u3001\u8ba2\u5355\u4fe1\u606f\u3001\u6536\u8d27\u5730\u5740\u4fe1\u606f\u5206\u522b\u5b58\u50a8\u5728 3 \u4e2a\u8868\u4e2d\uff0c\u901a\u8fc7\u5173\u8054\u952e\u8fdb\u884c\u5173\u8054\uff0c\u800c\u4e0d\u662f\u5c06\u8fd9\u4e9b\u4fe1\u606f\u5168\u90e8\u5b58\u50a8\u5728\u4e00\u4e2a\u8868\u4e2d\u3002<\/span><\/p>\n<\/blockquote>\n
      <\/h1>\n

      <\/h1>\n

      <\/p>\n
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      \n
      03<\/strong><\/span><\/section>\n<\/section>\n<\/section>\n
      \u679a\u4e3e\u5b57\u6bb5\u4e0d\u8981\u4f7f\u7528\u5b57\u7b26\u7c7b\u578b<\/strong> <\/span><\/section>\n<\/section>\n<\/section>\n<\/section>\n<\/section>\n

      <\/p>\n
      \u679a\u4e3e\u5b57\u6bb5\u901a\u5e38\u662f\u6307\u4e00\u79cd\u5177\u6709\u9884\u5b9a\u4e49\u53d6\u503c\u96c6\u5408\u7684\u5b57\u6bb5\u7c7b\u578b<\/strong>\u3002<\/span><\/p>\n
      \u5728 MySQL \u4e2d\uff0c\u679a\u4e3e\u5b57\u6bb5\u901a\u5e38\u88ab\u7528\u4e8e\u8868\u793a\u67d0\u4e2a\u5b57\u6bb5\u53ea\u6709\u56fa\u5b9a\u51e0\u4e2a\u503c\u53ef\u9009\u7684\u60c5\u51b5\u3002<\/span><\/p>\n
      \u5982\u679c\u4f7f\u7528\u5b57\u7b26\u7c7b\u578b\u6765\u4ee3\u66ff\u679a\u4e3e\u7c7b\u578b\u53bb\u5b9e\u73b0\u7c7b\u4f3c\u7684\u529f\u80fd\uff0c\u4f1a\u5bfc\u81f4\u5b58\u50a8\u7a7a\u95f4\u6d6a\u8d39\u3001\u67e5\u8be2\u6027\u80fd\u964d\u4f4e\u3002<\/span><\/p>\n
      \u4f7f\u7528\u5b57\u7b26\u7c7b\u578b\u5e26\u6765\u7684\u95ee\u9898\uff1a<\/strong><\/span><\/p>\n
      1\uff09\u5360\u7528\u66f4\u591a\u7684\u5b58\u50a8\u7a7a\u95f4<\/strong><\/span><\/p>\n
      \u4f7f\u7528\u5b57\u7b26\u7c7b\u578b\u6765\u5b58\u50a8\u679a\u4e3e\u5b57\u6bb5\u4f1a\u5360\u7528\u66f4\u591a\u7684\u5b58\u50a8\u7a7a\u95f4\uff0c\u5c24\u5176\u662f\u5728\u8be5\u5b57\u6bb5\u6709\u5927\u91cf\u53d6\u503c\u65f6\u3002<\/span><\/p>\n
      2\uff09\u67e5\u8be2\u6548\u7387\u4f4e\u4e0b<\/strong><\/span><\/p>\n
      \u4f7f\u7528\u5b57\u7b26\u7c7b\u578b\u7684\u679a\u4e3e\u5b57\u6bb5\uff0c\u7531\u4e8e\u9700\u8981\u5bf9\u5b57\u7b26\u7c7b\u578b\u8fdb\u884c\u6bd4\u8f83\uff0c\u56e0\u6b64\u67e5\u8be2\u6548\u7387\u901a\u5e38\u4f1a\u6bd4\u4f7f\u7528\u771f\u6b63\u7684\u679a\u4e3e\u7c7b\u578b\u8981\u4f4e\u3002<\/span><\/p>\n
      \u90a3\u4e48\uff0c\u5982\u4f55\u4f7f\u7528\u771f\u6b63\u7684\u679a\u4e3e\u7c7b\u578b\u5462\uff1f<\/strong><\/span><\/p>\n
      1\uff09\u4f7f\u7528 ENUM \u7c7b\u578b<\/strong><\/span><\/p>\n
      ENUM \u7c7b\u578b\u662f MySQL \u4e2d\u7684\u4e00\u79cd\u5217\u7c7b\u578b\uff0c\u5b83\u5141\u8bb8\u5217\u7684\u503c\u4e3a\u9884\u5b9a\u4e49\u7684\u503c\u4e4b\u4e00\u3002<\/span><\/p>\n
      \u4f7f\u7528 ENUM \u7c7b\u578b\u53ef\u4ee5\u786e\u4fdd\u5217\u7684\u503c\u53ea\u80fd\u662f\u9884\u5b9a\u4e49\u7684\u503c\uff0c\u800c\u4e14\u5b58\u50a8\u7a7a\u95f4\u6bd4\u5b57\u7b26\u7c7b\u578b\u8981\u5c0f\u3002<\/span><\/p>\n
      2\uff09\u907f\u514d\u5b9a\u4e49\u8fc7\u591a\u7684\u53d6\u503c<\/strong><\/span><\/p>\n
      \u679a\u4e3e\u5b57\u6bb5\u7684\u53d6\u503c\u4e0d\u5e94\u8be5\u592a\u591a\uff0c\u4e00\u822c\u5efa\u8bae\u5728 5 \u4e2a\u4ee5\u5185\u3002\u5426\u5219\uff0c\u679a\u4e3e\u7c7b\u578b\u7684\u6027\u80fd\u4f18\u52bf\u5c31\u4f1a\u4e27\u5931\u3002<\/span><\/p>\n
      3\uff09\u907f\u514d\u5728 WHERE \u5b50\u53e5\u4e2d\u4f7f\u7528\u679a\u4e3e\u7c7b\u578b<\/strong><\/span><\/p>\n
      \u679a\u4e3e\u7c7b\u578b\u5728 WHERE \u5b50\u53e5\u4e2d\u4f7f\u7528\u65f6\uff0c\u9700\u8981\u5c06\u679a\u4e3e\u503c\u8f6c\u6362\u4e3a\u6574\u6570\u8fdb\u884c\u6bd4\u8f83\uff0c\u8fd9\u4f1a\u5f71\u54cd\u67e5\u8be2\u6548\u7387\u3002<\/span><\/p>\n
      \u793a\u4f8b\uff1a\u4f7f\u7528 ENUM \u7c7b\u578b\u6765\u5b58\u50a8\u679a\u4e3e\u5b57\u6bb5\u3002<\/span><\/p>\n
      \n