{"id":318445,"date":"2024-01-22T21:41:22","date_gmt":"2024-01-22T13:41:22","guid":{"rendered":"https:\/\/www.idc.net\/help\/318445\/"},"modified":"2024-01-22T21:41:22","modified_gmt":"2024-01-22T13:41:22","slug":"%e4%bc%98%e5%8c%96db2%e5%ba%94%e7%94%a8%e7%b3%bb%e7%bb%9f%e6%80%a7%e8%83%bd%e7%9a%84%e6%96%b9%e6%a1%88%e6%9c%89%e5%93%aa%e4%ba%9b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/318445\/","title":{"rendered":"\u4f18\u5316DB2\u5e94\u7528\u7cfb\u7edf\u6027\u80fd\u7684\u65b9\u6848\u6709\u54ea\u4e9b\uff1f"},"content":{"rendered":"

\u6b64\u6587\u7ae0\u4e3b\u8981\u5411\u5927\u5bb6\u9610\u8ff0\u7684\u662fDB2\u5e94\u7528\u7cfb\u7edf\u6027\u80fd\u7684\u4f18\u5316\u7684\u5b9e\u9645\u64cd\u4f5c\u65b9\u6848\u7684\u5206\u4eab\uff0c\u5927\u5bb6\u90fd\u77e5\u9053DB2\u6570\u636e\u5e93\u662f\u4e00\u79cd\u9ad8\u6027\u80fd\u7684\u5927\u578b\u5173\u7cfbDB2\u7ba1\u7406\u7cfb\u7edf\uff0c\u5176\u5e7f\u6cdb\u7684\u5e94\u7528\u5728\u5ba2\u6237\/\u670d\u52a1\u5668\u4f53\u7cfb\u7ed3\u6784\u4e2d\u3002\u8bc4\u4ef7\u7cfb\u7edf\u6027\u80fd\u4f18\u5316\u7684\u6807\u51c6\u6709\uff1a<\/p>\n

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 <\/p>\n

\u8bbe\u8ba1\u6570\u636e\u5e93<\/p>\n

1.\u719f\u6089\u4e1a\u52a1\u7cfb\u7edf<\/p>\n

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2.\u89c4\u8303\u5316\u4e0e\u975e\u89c4\u8303\u5316<\/p>\n

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3.\u6570\u636e\u6761\u5e26\u5316<\/p>\n

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4.\u9009\u62e9\u6570\u636e\u7c7b\u578b<\/p>\n

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5. \u9009\u62e9\u7d22\u5f15<\/p>\n

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1.\u6392\u5e8f LaG\\u0014ERCx\\u001F<\/p>\n

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\u4e3a\u4e86\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u6392\u5e8f\uff0c\u5c31\u8981\u6b63\u786e\u5730\u589e\u5efa\u7d22\u5f15\uff0c\u5408\u7406\u5730\u5408\u5e76\u6570\u636e\u5e93\u8868\uff0c\u5c3d\u7ba1\u6709\u65f6\u53ef\u80fd\u5f71\u54cd\u8868\u7684\u89c4\u8303\u5316\uff0c\u4f46\u76f8\u5bf9\u4e8e\u6548\u7387\u7684\u63d0\u9ad8\u662f\u503c\u5f97\u7684\u3002\u5982\u679c\u6392\u5e8f\u4e0d\u53ef\u907f\u514d\uff0c\u90a3\u4e48\u5e94\u5f53\u8bd5\u56fe\u7b80\u5316\u5b83\uff0c\u5982\u7f29\u5c0f\u6392\u5e8f\u5217\u7684\u8303\u56f4\u7b49\u3002<\/p>\n

2.\u4e3b\u952e<\/p>\n

\u4e3b\u952e\u7528\u6574\u578b\u4f1a\u6781\u5927\u7684\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\uff0c\u800c\u5b57\u7b26\u578b\u7684\u6bd4\u8f83\u5f00\u9500\u8981\u6bd4\u6574\u578b\u7684\u6bd4\u8f83\u5f00\u9500\u5927\u5f88\u591a\uff0c\u7528\u5b57\u7b26\u578b\u6570\u636e\u4f5c\u4e3b\u952e\u4f1a\u4f7f\u6570\u636e\u63d2\u5165\u3001\u66f4\u65b0\u4e0e\u67e5\u8be2\u7684\u6548\u7387\u964d\u4f4e\u3002\u6570\u636e\u91cf\u5c0f\u7684\u65f6\u5019\u8fd9\u70b9\u964d\u4f4e\u53ef\u80fd\u4e0d\u4f1a\u88ab\u6ce8\u610f\uff0c\u53ef\u662f\u5f53\u6570\u636e\u91cf\u5927\u7684\u65f6\u5019\uff0c\u5c0f\u7684\u6539\u8fdb\u4e5f\u80fd\u591f\u63d0\u9ad8 DB2\u5e94\u7528\u7cfb\u7edf\u7684\u54cd\u5e94\u901f\u5ea6\u3002<\/p>\n

3.\u5d4c\u5957\u67e5\u8be2<\/p>\n

\u5728SQL\u8bed\u8a00\u4e2d\uff0c\u4e00\u4e2a\u67e5\u8be2\u5757\u53ef\u4ee5\u4f5c\u4e3a\u53e6\u4e00\u4e2a\u67e5\u8be2\u5757\u4e2d\u8c13\u8bcd\u7684\u4e00\u4e2a\u64cd\u4f5c\u6570\u3002\u56e0\u6b64\uff0cSQL\u67e5\u8be2\u53ef\u4ee5\u5c42\u5c42\u5d4c\u5957\u3002\u4f8b\u5982\u5728\u4e00\u4e2a\u5927\u578b\u5206\u5e03\u5f0f\u6570\u636e\u5e93\u7cfb\u7edf\u4e2d\uff0c\u6709\u8ba2\u5355\u8868Order\u3001\u8ba2\u5355\u4fe1\u606f\u8868OrderDetail\uff0c\u5982\u679c\u9700\u8981\u4e24\u8868\u5173\u8054\u67e5\u8be2\uff1a<\/p>\n

\n \n \n 
    \n  \n  \n  
  1. SELECT  <\/span><\/span><\/li>\n  \n  \n  
  2. FROM Order  <\/span><\/li>\n  \n  \n  
  3. WHERE OrderNo  <\/span><\/li>\n  \n  \n  
  4. ( SELECT OrderNo  <\/span><\/li>\n  \n  \n  
  5. FROM OrderDetail  <\/span><\/li>\n  \n  \n  
  6. WHERE <\/span>Price<\/span>=<\/span>0<\/span>.5)  <\/span><\/li>\n \n \n <\/ol><\/pre>\n
    \u5728\u8fd9\u4e2a\u67e5\u8be2\u4e2d\uff0c\u627e\u51fa\u62a5\u7eb8\u5355\u4ef7\u4e3a0.5\u5143\u7684\u6536\u8ba2\u5458\u540d\u5355\u3002\u4e0b\u5c42\u67e5\u8be2\u8fd4\u56de\u4e00\u7ec4\u503c\u7ed9\u4e0a\u5c42\u67e5\u8be2\uff0c\u7136\u540e\u7531\u4e0a\u5c42\u67e5\u8be2\u5757\u518d\u6839\u636e\u4e0b\u5c42\u5757\u63d0\u4f9b\u7684\u503c\u7ee7\u7eed\u67e5\u8be2\u3002\u5728\u8fd9\u79cd\u5d4c\u5957\u67e5\u8be2\u4e2d\uff0c\u5bf9\u4e0a\u5c42\u67e5\u8be2\u7684\u6bcf\u4e00\u4e2a\u503cOrderNo\uff0c\u4e0b\u5c42\u67e5\u8be2\u90fd\u8981\u5bf9\u8868OrderDetail\u8fdb\u884c\u5168\u90e8\u626b\u63cf\uff0c\u6267\u884c\u6548\u7387\u663e\u7136\u4e0d\u4f1a\u9ad8\u3002<\/p>\n
    \u5728\u8be5\u67e5\u8be2\u4e2d\uff0c\u67092\u5c42\u5d4c\u5957\uff0c\u5982\u679c\u6bcf\u5c42\u90fd\u67e5\u8be21000\u884c\uff0c\u90a3\u4e48\u8fd9\u4e2a\u67e5\u8be2\u5c31\u8981\u67e5\u8be2100\u4e07\u884c\u6570\u636e\u3002\u5728 DB2\u5e94\u7528\u7cfb\u7edf\u5f00\u9500\u4e2d\uff0c\u5bf9\u8868Order\u7684\u626b\u63cf\u536082\uff05\uff0c\u5bf9\u8868OrderDetail\u7684\u641c\u7d22\u5360 16\uff05\u3002\u5982\u679c\u6211\u4eec\u7528\u8fde\u63a5\u6765\u4ee3\u66ff\uff0c\u5373\uff1a<\/p>\n
    \n \n \n 
      \n  \n  \n  
    1. SELECT CreateUser  <\/span><\/span><\/li>\n  \n  \n  
    2. FROM Order,OrderDetail  <\/span><\/li>\n  \n  \n  
    3. WHERE <\/span>Order.OrderNo<\/span>=<\/span>OrderDetail<\/span>.OrderNo AND <\/span>Praice<\/span>=<\/span>0<\/span>.5  <\/span><\/li>\n \n \n <\/ol><\/pre>\n
      \u90a3\u4e48\u5bf9\u8868Order\u7684\u626b\u63cf\u536074\uff05\uff0c\u5bf9\u8868OrderDetail\u7684\u641c\u7d22\u536014\uff05\u3002<\/p>\n
      \u800c\u4e14\uff0c\u4e00\u4e2a\u5217\u7684\u6807\u7b7e\u540c\u65f6\u5728\u4e3b\u67e5\u8be2\u548cwhere\u5b50\u53e5\u4e2d\u7684\u67e5\u8be2\u4e2d\u51fa\u73b0\uff0c\u90a3\u4e48\u5f88\u53ef\u80fd\u5f53\u4e3b\u67e5\u8be2\u4e2d\u7684\u5217\u503c\u6539\u53d8\u4e4b\u540e\uff0c\u5b50\u67e5\u8be2\u5fc5\u987b\u91cd\u65b0\u67e5\u8be2\u4e00\u6b21\u3002\u67e5\u8be2\u5d4c\u5957\u5c42\u6b21\u8d8a\u591a\uff0c\u6548\u7387\u8d8a\u4f4e\uff0c\u56e0\u6b64\u5e94\u5f53\u5c3d\u91cf\u907f\u514d\u5b50\u67e5\u8be2\u3002\u5982\u679c\u5b50\u67e5\u8be2\u4e0d\u53ef\u907f\u514d\uff0c\u90a3\u4e48\u8981\u5728\u5b50\u67e5\u8be2\u4e2d\u8fc7\u6ee4\u6389\u5c3d\u53ef\u80fd\u591a\u7684\u884c\u3002<\/p>\n
      4.\u901a\u914d\u7b26<\/p>\n
      \u5728SQL\u8bed\u53e5\u4e2d\uff0cLIKE\u5173\u952e\u5b57\u652f\u6301\u901a\u914d\u7b26\u5339\u914d\uff0c\u4f46\u8fd9\u79cd\u5339\u914d\u7279\u522b\u8017\u8d39\u65f6\u95f4\u3002\u4f8b\u5982\uff1aSELECT * FROM Order WHERE CreateUser LIKE \u2018M_ _ _\u2019 \u3002\u5373\u4f7f\u5728CreateUser\u5b57\u6bb5\u4e0a\u5efa\u7acb\u4e86\u7d22\u5f15\uff0c\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\u4e5f\u8fd8\u662f\u91c7\u7528\u987a\u5e8f\u626b\u63cf\u7684\u65b9\u5f0f\uff0cOrder\u8868\u4e2d\u67091000\u6761\u8bb0\u5f55\uff0c\u5c31\u9700\u8981\u6bd4\u8f831000\u6b21\u3002\u5982\u679c\u628a\u8bed\u53e5\u6539\u4e3aSELECT * FROM Order WHERE CreateUser >\u2019M\u2019 AND CreateUser <\u2019N\u2019\uff0c\u5728\u6267\u884c\u67e5\u8be2\u65f6\u5c31\u4f1a\u5229\u7528\u7d22\u5f15\u6765\u67e5\u8be2\uff0c\u663e\u7136\u4f1a\u5927\u5927\u63d0\u9ad8\u901f\u5ea6\u3002<\/p>\n
      5.distinct<\/p>\n
      \u4f7f\u7528distinct\u662f\u4e3a\u4e86\u4fdd\u8bc1\u5728\u7ed3\u679c\u96c6\u4e2d\u4e0d\u51fa\u73b0\u91cd\u590d\u503c\uff0c\u4f46\u662fdistinct\u4f1a\u4ea7\u751f\u4e00\u5f20\u5de5\u4f5c\u8868\uff0c\u5e76\u8fdb\u884c\u6392\u5e8f\u6765\u5220\u9664\u91cd\u590d\u8bb0\u5f55\uff0c\u8fd9\u4f1a\u5927\u5927\u589e\u52a0\u67e5\u8be2\u548cI\/O\u7684\u64cd\u4f5c\u6b21\u6570\u3002\u56e0\u6b64\u5e94\u5f53\u907f\u514d\u4f7f\u7528distinct\u5173\u952e\u5b57\u3002<\/p>\n
      6.\u8d1f\u903b\u8f91<\/p>\n
      \u8d1f\u903b\u8f91\u5982!=\u3001<>\u3001not in\u7b49\uff0c\u90fd\u4f1a\u5bfc\u81f4DB2\u7528\u8868\u626b\u63cf\u6765\u5b8c\u6210\u67e5\u8be2\u3002\u5f53\u8868\u8f83\u5927\u65f6\uff0c\u4f1a\u4e25\u91cd\u5f71\u54cd\u7cfb\u7edf\u6027\u80fd\uff0c\u53ef\u4ee5\u7528\u522b\u7684\u64cd\u4f5c\u6765\u4ee3\u66ff\u3002<\/p>\n
      7.\u4e34\u65f6\u8868<\/p>\n
      \u4f7f\u7528\u4e34\u65f6\u8868\u65f6\u6570\u636e\u5e93\u4f1a\u5728\u78c1\u76d8\u4e2d\u5efa\u7acb\u76f8\u5e94\u7684\u6570\u636e\u7ed3\u6784\uff0c\u56e0\u4e3a\u5185\u5b58\u7684\u8bbf\u95ee\u901f\u5ea6\u8fdc\u8fdc\u5927\u4e8e\u5916\u90e8\u5b58\u50a8\u5668\u7684\u8bbf\u95ee\u901f\u5ea6\uff0c\u5728\u590d\u6742\u67e5\u8be2\u4e2d\u4f7f\u7528\u4e34\u65f6\u8868\u65f6\uff0c\u4e2d\u95f4\u7ed3\u679c\u4f1a\u88ab\u5bfc\u5165\u5230\u4e34\u65f6\u8868\u4e2d\uff0c\u8fd9\u79cd\u78c1\u76d8\u64cd\u4f5c\u4f1a\u5927\u5927\u964d\u4f4e\u67e5\u8be2\u6548\u7387\u3002\u53e6\u5916\uff0c\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\uff0c\u4e34\u65f6\u8868\u7684\u4f7f\u7528\u8fd8\u4f1a\u5e26\u6765\u591a\u4e2a\u67e5\u8be2\u8fdb\u7a0b\u4e4b\u95f4\u7684\u540c\u6b65\u95ee\u9898\u3002\u6240\u4ee5\uff0c\u5728\u8fdb\u884c\u590d\u6742\u67e5\u8be2\u65f6***\u4e0d\u8981\u4f7f\u7528\u4e34\u65f6\u8868\u3002<\/p>\n
      8.\u5b58\u50a8\u8fc7\u7a0b<\/p>\n
      DB2\u4e2d\u7684Stored Procedure Builder\u53ef\u4ee5\u4ea7\u751f\u5b58\u50a8\u8fc7\u7a0b\uff0c\u8fd0\u884c\u5e76\u6d4b\u8bd5\u5b58\u50a8\u8fc7\u7a0b\u3002\u5b58\u50a8\u8fc7\u7a0b\u53ef\u4ee5\u5305\u542b\u5de8\u5927\u800c\u590d\u6742\u7684\u67e5\u8be2\u6216SQL\u64cd\u4f5c\uff0c\u7ecf\u8fc7\u7f16\u8bd1\u540e\u5b58\u50a8\u5728DB2\u6570\u636e\u5e93\u4e2d\u3002\u7528\u6237\u5728\u591a\u6b21\u4f7f\u7528\u540c\u6837\u7684SQL\u64cd\u4f5c\u65f6\uff0c\u53ef\u4ee5\u5148\u628a\u8fd9\u4e9bSQL\u64cd\u4f5c\u505a\u6210\u5b58\u50a8\u8fc7\u7a0b\uff0c\u5728\u9700\u8981\u7528\u5230\u7684\u5730\u65b9\u76f4\u63a5\u5f15\u7528\u5176\u540d\u5b57\u8fdb\u884c\u8c03\u7528\u3002<\/p>\n
      \u5b58\u50a8\u8fc7\u7a0b\u5728***\u6b21\u6267\u884c\u65f6\u5efa\u7acb\u4f18\u5316\u7684\u67e5\u8be2\u65b9\u6848\uff0cDB2 \u5c06\u67e5\u8be2\u65b9\u6848\u4fdd\u5b58\u5728\u9ad8\u901f\u7f13\u5b58\u91cc\uff0c\u4ee5\u540e\u8c03\u7528\u8fd0\u884c\u65f6\u53ef\u4ee5\u76f4\u63a5\u4ece\u9ad8\u901f\u7f13\u5b58\u6267\u884c\uff0c\u7701\u53bb\u4e86\u4f18\u5316\u548c\u7f16\u8bd1\u7684\u9636\u6bb5\uff0c\u8282\u7701\u4e86\u6267\u884c\u65f6\u95f4\uff0c\u4ece\u800c\u63d0\u9ad8\u6548\u7387\u548c\u7cfb\u7edf\u5229\u7528\u7387\u3002<\/p>\n
      ***\u7684\u67e5\u8be2\u65b9\u6848\u6309\u7167\u67d0\u4e9b\u6807\u51c6\u9009\u62e9\u5f80\u5f80\u4e0d\u53ef\u884c\uff0c\u8981\u6839\u636e\u5b9e\u9645\u7684\u8981\u6c42\u548c\u5177\u4f53\u60c5\u51b5\uff0c\u901a\u8fc7\u6bd4\u8f83\u8fdb\u884c\u9009\u62e9\u3002DB2\u63d0\u4f9b\u7684Query Patroller\u53ef\u4ee5\u5bf9\u4e0d\u540c\u7684\u67e5\u8be2\u65b9\u6848\u7684\u67e5\u8be2\u4ee3\u4ef7\u8fdb\u884c\u6bd4\u8f83\uff0c\u901a\u8fc7\u8ffd\u8e2a\u67e5\u8be2\u8bed\u53e5\uff0c\u8fd4\u56de\u67e5\u8be2\u4e0d\u540c\u9636\u6bb5\u7684 DB2\u5e94\u7528\u7cfb\u7edf\u5f00\u9500\uff0c\u4ece\u800c\u4f5c\u51fa***\u9009\u62e9\u3002DB2\u63d0\u4f9b\u7684 Performance Monitor\u4e5f\u5bf9\u6574\u4e2a\u6570\u636e\u5e93\u7cfb\u7edf\u7684\u6027\u80fd\u8fdb\u884c\u76d1\u63a7\uff0c\u5305\u62ecI\/O\u65f6\u95f4\u3001\u67e5\u8be2\u6b21\u6570\u3001\u6392\u5e8f\u65f6\u95f4\u3001\u540c\u6b65\u8bfb\u5199\u65f6\u95f4\u7b49\u7b49\u3002<\/p>\n
      \u6570\u636e\u5e93\u7cfb\u7edf\u7684\u5e76\u53d1\u63a7\u5236\u4e5f\u80fd\u5f71\u54cd\u7cfb\u7edf\u6027\u80fd\u3002\u591a\u4e2a\u7528\u6237\u7684\u540c\u65f6\u64cd\u4f5c\u53ef\u80fd\u5bfc\u81f4\u6570\u636e\u7684\u4e0d\u4e00\u81f4\u6027\uff0cDB2\u4e3a\u4e86\u9632\u6b62\u540c\u65f6\u4fee\u6539\u9020\u6210\u6570\u636e\u4e22\u5931\u548c\u8bbf\u95ee\u672a\u88ab\u63d0\u4ea4\u7684\u6570\u636e\uff0c\u4ee5\u53ca\u6570\u636e\u7684\u4fdd\u62a4\u8bfb\uff0c\u91c7\u7528Lock\u673a\u5236\u6765\u5b9e\u73b0\u63a7\u5236\u3002<\/p>\n
      DB2\u4e2d\u53ef\u4ee5\u5bf9\u8868\u7a7a\u95f4\u3001\u8868\u3001\u8868\u5217\u548c\u7d22\u5f15\u52a0\u9501\u3002\u9501\u7684\u7c92\u5ea6\u8d8a\u5927\uff0c\u9501\u8d8a\u7b80\u5355\uff0c\u5f00\u9500\u5c0f\uff0c\u5e76\u53d1\u5ea6\u4f4e\uff1b\u7c92\u5ea6\u5c0f\uff0c\u9501\u673a\u5236\u590d\u6742\uff0c\u5f00\u9500\u5927\uff0c\u5e76\u53d1\u5ea6\u9ad8\u3002\u5927\u578b\u7cfb\u7edf\u5728\u5e76\u53d1\u5904\u7406\u4e2d\u5982\u679c\u9047\u5230\u6240\u8981\u5206\u914d\u7684\u8d44\u6e90\u5904\u4e8e\u9501\u5b9a\u72b6\u6001\uff0c DB2\u5e94\u7528\u7cfb\u7edf\u4f1a\u628a\u8fdb\u7a0b\u6302\u8d77\u7b49\u5f85\u3002<\/p>\n
      \u5982\u679c\u4e00\u4e2a\u5f88\u8017\u65f6\u7684\u67e5\u8be2\u64cd\u4f5c\u5de5\u4f5c\u4e8e\u4e00\u4e2a\u7ecf\u5e38\u4f7f\u7528\u7684\u8868\u4e0a\uff0c\u6b64\u65f6\u4f7f\u7528\u8868\u4e00\u7ea7\u9501\uff0c\u610f\u5473\u7740\u6574\u4e2a\u7cfb\u7edf\u90fd\u8981\u7b49\u5f85\u4f60\u7684\u67e5\u8be2\u7ed3\u675f\u4ee5\u540e\u624d\u80fd\u591f\u7ee7\u7eed\u8fd0\u884c\u3002\u6240\u4ee5\u5728\u590d\u6742\u67e5\u8be2\u4e2d\uff0c\u5c3d\u91cf\u907f\u514d\u4f7f\u7528\u8868\u4e00\u7ea7\u9501\u3002\u5982\u679c\u6709\u8fd9\u4e00\u7c7b\u7684\u9700\u8981\u8be5\u600e\u4e48\u529e\u5462\uff1f\u53ef\u4ee5\u5229\u7528\u89c6\u56fe\u6765\u89e3\u51b3\u8fd9\u4e00\u7c7b\u95ee\u9898\u3002\u89c6\u56fe\u907f\u514d\u4e86\u5bf9\u8868\u7684\u76f4\u63a5\u64cd\u4f5c\uff0c\u540c\u65f6\u6709\u80fd\u591f\u4fdd\u8bc1\u6570\u636e\u5e93\u7684\u9ad8\u6548\u8fd0\u8f6c\u3002<\/p>\n
      \u3010\u7f16\u8f91\u63a8\u8350\u3011<\/p>\n
        \n
      1. DB2\u6570\u636e\u5e93\u4ee3\u7801\u9875\u51fa\u73b0\u4e0d\u517c\u5bb9\u8fd9\u4e00\u60c5\u51b5\u7684\u7834\u89e3<\/li>\n
      2. DB2\u6570\u636e\u5e93\u5e76\u7f6e\u53d1\u751f\u65f6\uff0c\u8868\u8981\u5982\u4f55\u6539\u53d8\u66f4?<\/li>\n
      3. \u5bf9DB2\u5206\u533a\u517c\u5bb9\u6027\u7c7b\u578b\u7684\u5c5e\u6027\u63cf\u8ff0<\/li>\n
      4. \u4f7f\u7528DB2\u4e34\u65f6\u8868\u65f6\u6709\u54ea\u4e9b\u95ee\u9898\u662f\u9700\u8981\u6ce8\u610f\u7684\uff1f<\/li>\n
      5. \u5173\u4e8eDB2\u9694\u79bb\u7ea7\u89e3\u8bfb\u548c\u8bd5\u9a8c\u7684\u4e2a\u4eba\u8d44\u6599\n
         <\/p>\n
          <\/li>\n<\/ol>\n
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