{"id":44949,"date":"2020-10-28T22:49:48","date_gmt":"2020-10-28T14:49:48","guid":{"rendered":"http:\/\/www.zhushiyao.com\/?p=44949"},"modified":"2020-10-28T22:50:30","modified_gmt":"2020-10-28T14:50:30","slug":"68d0f294af","status":"publish","type":"post","link":"http:\/\/www.zhushiyao.com\/?p=44949","title":{"rendered":"\u4e00\u6b65\u6b65\u5b9e\u73b0 Redis \u641c\u7d22\u5f15\u64ce"},"content":{"rendered":"
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\u573a\u666f<\/h2>\n

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\u4e0b\u9762\u4ee5\u4e00\u4e2a\u4f8b\u5b50\u5f00\u59cb\uff0c\u8fd9\u662f\u67d0\u8d2d\u7269\u7f51\u7ad9\u7684\u641c\u7d22\u6761\u4ef6\uff0c\u5982\u679c\u8ba9\u4f60\u5b9e\u73b0\u8fd9\u6837\u7684\u4e00\u4e2a\u641c\u7d22\u63a5\u53e3\uff0c\u4f60\u4f1a\u5982\u4f55\u5b9e\u73b0\uff1f\uff08\u5f53\u7136\u4f60\u8bf4\u501f\u52a9\u641c\u7d22\u5f15\u64ce\uff0c\u50cf Elasticsearch \u4e4b\u7c7b\u7684\uff0c\u4f60\u5b8c\u5168\u53ef\u4ee5\u5b9e\u73b0\u3002\u4f46\u6211\u8fd9\u91cc\u60f3\u8bf4\u7684\u662f\uff0c\u5982\u679c\u8981\u4f60\u81ea\u5df1\u5b9e\u73b0\u5462\uff1f<\/em>\uff09<\/p>\n

\"\u4e00\u6b65\u6b65\u5b9e\u73b0<\/p>\n

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\u00a0<\/span><\/p>\n

\u5b9e\u73b01<\/span><\/p>\n

\u7387\u5148\u767b\u573a\u662f\u5c0fA\u540c\u5b66\uff0c\u4ed6\u662f\u5199 SQL \u65b9\u9762\u7684\u201c\u4e13\u5bb6\u201d\u3002\u5c0fA\u4fe1\u5fc3\u6ee1\u6ee1\u7684\u8bf4\uff1a\u201c\u4e0d\u5c31\u662f\u4e00\u4e2a\u67e5\u8be2\u63a5\u53e3\u5417\uff1f\u770b\u7740\u6761\u4ef6\u5f88\u591a\uff0c\u4f46\u51ed\u7740\u6211\u4e30\u5bcc\u7684 SQL \u7ecf\u9a8c\uff0c\u8fd9\u70b9\u8fd8\u662f\u96be\u4e0d\u5012\u6211\u7684\u3002\u201d<\/p>\n

\u4e8e\u662f\u4e4e\u5c31\u5199\u51fa\u4e86\u4e0b\u9762\u8fd9\u6bb5\u4ee3\u7801\uff08\u8fd9\u91cc\u4ee5 MYSQL \u4e3a\u4f8b\uff09\uff1a<\/p>\n

\n
    \n
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  • <\/li>\n<\/ul>\n
    select<\/span> ... from<\/span> table_1<\/span><\/code>left<\/span> join<\/span> table_2<\/span><\/code>left<\/span> join<\/span> table_3<\/span><\/code>left<\/span> join<\/span> (select<\/span> ... from<\/span> table_x where<\/span> ...) tmp_1<\/span><\/code>...<\/span><\/code>where<\/span> ...<\/span><\/code>order<\/span> by<\/span> ...<\/span><\/code>limit<\/span> m,n<\/span><\/code><\/pre>\n<\/section>\n
    \u4ee3\u7801\u5728\u6d4b\u8bd5\u73af\u5883\u8dd1\u4e86\u4e00\u628a\uff0c\u7ed3\u679c\u597d\u50cf\u90fd\u5339\u914d\u4e0a\u4e86\uff0c\u4e8e\u662f\u51c6\u5907\u4e0a\u9884\u53d1\u3002\u8fd9\u4e00\u4e0a\u9884\u53d1\uff0c\u95ee\u9898\u5c31\u5f00\u59cb\u66b4\u9732\u51fa\u6765\u3002\u9884\u53d1\u4e3a\u4e86\u5c3d\u53ef\u80fd\u7684\u903c\u771f\u7ebf\u4e0a\u73af\u5883\uff0c\u6240\u4ee5\u6570\u636e\u91cf\u81ea\u7136\u800c\u7136\u8981\u6bd4\u6d4b\u8bd5\u5927\u7684\u591a\u3002\u6240\u4ee5\u8fd9\u4e48\u4e00\u4e2a\u590d\u6742\u7684 SQL\uff0c\u5b83\u7684\u6267\u884c\u6548\u7387\u53ef\u60f3\u800c\u77e5\u3002\u6d4b\u8bd5\u540c\u5b66\u679c\u65ad\u628a\u5c0fA\u7684\u4ee3\u7801\u7ed9\u6253\u4e86\u56de\u6765\u3002<\/p>\n
    \u00a0<\/span><\/p>\n
    \u5b9e\u73b02<\/span><\/p>\n
    \u603b\u7ed3\u4e86\u5c0fA\u5931\u8d25\u7684\u6559\u8bad\uff0c\u5c0fB\u5f00\u59cb\u5bf9SQL\u8fdb\u884c\u4e86\u4f18\u5316\uff0c\u5148\u662f\u901a\u8fc7\u4e86explain<\/code>\u5173\u952e\u5b57\u8fdb\u884cSQL\u6027\u80fd\u5206\u6790\uff0c\u5bf9\u8be5\u52a0\u7d22\u5f15\u7684\u5730\u65b9\u90fd\u52a0\u4e0a\u4e86\u7d22\u5f15\u3002\u540c\u65f6\u5c06\u4e00\u6761\u590d\u6742SQL\u62c6\u5206\u6210\u4e86\u591a\u6761SQL\uff0c\u8ba1\u7b97\u7ed3\u679c\u5728\u7a0b\u5e8f\u5185\u5b58\u4e2d\u8fdb\u884c\u8ba1\u7b97\u3002<\/p>\n
    \u4f2a\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
    \n
      \n
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    • <\/li>\n<\/ul>\n
      $result_1 = query('select<\/span> ... from<\/span> table_1 where<\/span> ...');<\/span><\/span><\/code>$result_2 = query('<\/span>select<\/span> ... from<\/span> table_2 where<\/span> ...');<\/span><\/span><\/code>$result_3 = query('<\/span>select<\/span> ... from<\/span> table_3 where<\/span> ...');<\/span><\/span><\/code>...<\/span><\/code>\n<\/span><\/code>$result = array_intersect($result_1, $result_2, $result_3, ...);<\/span><\/code><\/pre>\n<\/section>\n
      \u8fd9\u79cd\u65b9\u6848\u4ece\u6027\u80fd\u4e0a\u660e\u663e\u6bd4\u7b2c\u4e00\u79cd\u8981\u597d\u5f88\u591a\uff0c\u53ef\u662f\u5728\u529f\u80fd\u9a8c\u6536\u7684\u65f6\u5019\uff0c\u4ea7\u54c1\u7ecf\u7406\u8fd8\u662f\u89c9\u5f97\u67e5\u8be2\u901f\u5ea6\u4e0d\u591f\u5feb\u3002\u5c0fB\u81ea\u5df1\u4e5f\u77e5\u9053\uff0c\u6bcf\u6b21\u67e5\u8be2\u90fd\u4f1a\u5411\u6570\u636e\u5e93\u67e5\u8be2\u591a\u6b21\uff0c\u800c\u4e14\u6709\u4e9b\u5386\u53f2\u539f\u56e0\uff0c\u90e8\u5206\u6761\u4ef6\u662f\u505a\u4e0d\u5230\u5355\u8868\u67e5\u8be2\u7684\uff0c\u6240\u4ee5\u67e5\u8be2\u7b49\u5f85\u7684\u65f6\u95f4\u662f\u907f\u514d\u4e0d\u4e86\u7684\u3002<\/p>\n
      \u00a0<\/span><\/p>\n
      \u5b9e\u73b03<\/span><\/p>\n
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      \u4e8e\u662f\u4ed6\u7a81\u53d1\u5947\u60f3\uff0c\u80fd\u5426\u4e8b\u5148\u5c06\u5404\u4e2a\u5b50\u7ef4\u5ea6\u7684\u7ed3\u679c\u96c6\u7ed9\u7f13\u5b58\u8d77\u6765\uff0c\u8fd9\u8981\u67e5\u8be2\u7684\u65f6\u5019\u76f4\u63a5\u53bb\u53d6\u60f3\u8981\u7684\u5b50\u96c6\uff0c\u800c\u4e0d\u7528\u6bcf\u6b21\u53bb\u67e5\u5e93\u8ba1\u7b97\u3002<\/p>\n
      \u8fd9\u91cc\u5c0fC\u91c7\u7528 Redis \u6765\u5b58\u50a8\u7f13\u5b58\u6570\u636e\uff0c\u7528\u5b83\u7684\u4e3b\u8981\u539f\u56e0\u662f\uff0c\u5b83\u63d0\u4f9b\u4e86\u591a\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u5e76\u4e14\u5728 Redis \u4e2d\u8fdb\u884c\u96c6\u5408\u7684\u4ea4\u5e76\u96c6\u64cd\u4f5c\u662f\u4e00\u4ef6\u5f88\u5bb9\u6613\u7684\u4e8b\u60c5\u3002<\/p>\n
      \u5177\u4f53\u65b9\u6848\uff0c\u5982\u56fe\u6240\u793a\uff1a<\/p>\n
      \"\u4e00\u6b65\u6b65\u5b9e\u73b0<\/p>\n
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        \n
      • \u5b50\u7c7b\u5355\u9009\uff1a\u76f4\u63a5\u6839\u636e\u6761\u4ef6 key\uff0c\u83b7\u53d6\u5bf9\u5e94\u7ed3\u679c\u96c6\uff1b<\/li>\n
      • \u5b50\u7c7b\u591a\u9009\uff1a\u6839\u636e\u591a\u4e2a\u6761\u4ef6 Key\uff0c\u8fdb\u884c\u5e76\u96c6\u64cd\u4f5c\uff0c\u83b7\u53d6\u5bf9\u5e94\u7ed3\u679c\u96c6\uff1b<\/li>\n
      • \u6700\u7ec8\u7ed3\u679c\uff1a\u5c06\u83b7\u53d6\u7684\u6240\u6709\u5b50\u7c7b\u7ed3\u679c\u96c6\u8fdb\u884c\u4ea4\u96c6\u64cd\u4f5c\uff0c\u5f97\u5230\u6700\u7ec8\u7ed3\u679c\uff1b<\/li>\n<\/ul>\n
        \u8fd9\u5176\u5b9e\u5c31\u662f\u6240\u8c13\u7684\u53cd\u5411\u7d22\u5f15\u3002<\/span><\/em><\/p>\n
        \u8fd9\u91cc\u4f1a\u53d1\u73b0\uff0c\u6f0f\u4e86\u4e00\u4e2a\u4ef7\u683c\u7684\u6761\u4ef6\u3002\u4ece\u9700\u6c42\u4e2d\u53ef\u77e5\uff0c\u4ef7\u683c\u6761\u4ef6\u662f\u4e2a\u533a\u95f4\uff0c\u5e76\u4e14\u662f\u65e0\u7a77\u4e3e\u7684\u3002\u6240\u4ee5\u4e0a\u8ff0\u7684\u8fd9\u79cd\u7a77\u4e3e\u6761\u4ef6\u7684 Key-Value \u65b9\u5f0f\u662f\u505a\u4e0d\u5230\u7684\u3002\u8fd9\u91cc\u6211\u4eec\u91c7\u7528 Redis \u7684\u53e6\u4e00\u79cd\u6570\u636e\u7ed3\u6784\u8fdb\u884c\u5b9e\u73b0\uff0c\u6709\u5e8f\u96c6\u5408\uff08Sorted Set\uff09\uff1a<\/p>\n
        \"\u4e00\u6b65\u6b65\u5b9e\u73b0<\/p>\n
        \u5c06\u6240\u6709\u5546\u54c1\u52a0\u5165 Key \u4e3a\u4ef7\u683c\u7684\u6709\u5e8f\u96c6\u5408\u4e2d\uff0c\u503c\u4e3a\u5546\u54c1ID\uff0c\u6bcf\u4e2a\u503c\u5bf9\u5e94\u7684\u5206\u6570\u4e3a\u5546\u54c1\u4ef7\u683c\u7684\u6570\u503c\u3002\u8fd9\u6837\u5728 Redis \u7684\u6709\u5e8f\u96c6\u5408\u4e2d\u5c31\u53ef\u4ee5\u901a\u8fc7ZRANGEBYSCORE<\/code>\u547d\u4ee4\uff0c\u6839\u636e\u5206\u6570\uff08\u4ef7\u683c\uff09\u533a\u95f4\uff0c\u83b7\u53d6\u76f8\u5e94\u7ed3\u679c\u96c6\u3002<\/p>\n
        \u81f3\u6b64\uff0c\u65b9\u6848\u4e09\u7684\u4f18\u5316\u5df2\u5168\u90e8\u7ed3\u675f\uff0c\u5c06\u6570\u636e\u7684\u67e5\u8be2\u4e0e\u8ba1\u7b97\u901a\u8fc7\u7f13\u5b58\u7684\u624b\u6bb5\uff0c\u8fdb\u884c\u4e86\u5206\u79bb\u3002\u5728\u6bcf\u6b21\u67e5\u627e\u65f6\uff0c\u53ea\u9700\u8981\u7b80\u5355\u7684\u67e5\u627e Redis \u51e0\u6b21\u5c31\u80fd\u5f97\u51fa\u7ed3\u679c\u3002\u67e5\u8be2\u901f\u5ea6\u4e0a\u7b26\u5408\u4e86\u9a8c\u6536\u7684\u8981\u6c42\u3002<\/p>\n
        \u00a0<\/span><\/p>\n
        \u6269\u5c55<\/span><\/p>\n