{"id":186360,"date":"2024-11-11T05:16:20","date_gmt":"2024-11-10T21:16:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/186360\/"},"modified":"2024-11-11T05:16:21","modified_gmt":"2024-11-10T21:16:21","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e5%a4%a7%e4%bd%9c%e6%a5%ad%ef%bc%9a%e6%8e%a2%e7%a9%b6%e8%87%aa%e8%a1%8c%e8%bb%8a%e9%8a%b7%e5%94%ae%e6%95%b8%e6%93%9a%ef%bc%88%e6%95%b8%e6%93%9a%e5%ba%ab%e5%a4%a7%e4%bd%9c","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/186360\/","title":{"rendered":"\u6578\u64da\u5eab\u5927\u4f5c\u696d\uff1a\u63a2\u7a76\u81ea\u884c\u8eca\u92b7\u552e\u6578\u64da\uff08\u6578\u64da\u5eab\u5927\u4f5c\u696d\u81ea\u884c\u8eca\u92b7\u552e\uff09"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e5%a4%a7%e4%bd%9c%e6%a5%ad%ef%bc%9a%e6%8e%a2%e7%a9%b6%e8%87%aa%e8%a1%8c%e8%bb%8a%e9%8a%b7%e5%94%ae%e6%95%b8%e6%93%9a-HvQVKXqUIH\">\u6578\u64da\u5eab\u5927\u4f5c\u696d\uff1a\u63a2\u7a76\u81ea\u884c\u8eca\u92b7\u552e\u6578\u64da<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u6642\u4ee3\uff0c\u6578\u64da\u5eab\u7684\u61c9\u7528\u8d8a\u4f86\u8d8a\u5ee3\u6cdb\uff0c\u5c24\u5176\u662f\u5728\u5546\u696d\u9818\u57df\u3002\u81ea\u884c\u8eca\u92b7\u552e\u6578\u64da\u4f5c\u70ba\u4e00\u500b\u5177\u9ad4\u7684\u6848\u4f8b\uff0c\u80fd\u5920\u5e6b\u52a9\u6211\u5011\u6df1\u5165\u4e86\u89e3\u6578\u64da\u5eab\u7684\u8a2d\u8a08\u3001\u7ba1\u7406\u53ca\u5176\u5728\u5546\u696d\u6c7a\u7b56\u4e2d\u7684\u91cd\u8981\u6027\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u81ea\u884c\u8eca\u92b7\u552e\u6578\u64da\u7684\u7d50\u69cb\u3001\u5206\u6790\u65b9\u6cd5\u53ca\u5176\u61c9\u7528\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%ad%e8%a8%88-HvQVKXqUIH\">\u6578\u64da\u5eab\u8a2d\u8a08<\/h2>\n<p>\u5728\u8a2d\u8a08\u4e00\u500b\u81ea\u884c\u8eca\u92b7\u552e\u6578\u64da\u5eab\u6642\uff0c\u6211\u5011\u9700\u8981\u8003\u616e\u591a\u500b\u5be6\u9ad4\u53ca\u5176\u4e4b\u9593\u7684\u95dc\u4fc2\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4e3b\u8981\u7684\u5be6\u9ad4\uff1a<\/p>\n<ul>\n<li><strong>\u81ea\u884c\u8eca<\/strong>\uff1a\u5305\u62ec\u54c1\u724c\u3001\u578b\u865f\u3001\u984f\u8272\u3001\u50f9\u683c\u7b49\u5c6c\u6027\u3002<\/li>\n<li><strong>\u5ba2\u6236<\/strong>\uff1a\u5305\u62ec\u59d3\u540d\u3001\u806f\u7d61\u65b9\u5f0f\u3001\u5730\u5740\u7b49\u4fe1\u606f\u3002<\/li>\n<li><strong>\u8a02\u55ae<\/strong>\uff1a\u5305\u62ec\u8a02\u55ae\u7de8\u865f\u3001\u8a02\u55ae\u65e5\u671f\u3001\u5ba2\u6236ID\u3001\u81ea\u884c\u8ecaID\u3001\u6578\u91cf\u7b49\u3002<\/li>\n<li><strong>\u5eab\u5b58<\/strong>\uff1a\u5305\u62ec\u81ea\u884c\u8ecaID\u3001\u5eab\u5b58\u6578\u91cf\u3001\u9032\u8ca8\u65e5\u671f\u7b49\u3002<\/li>\n<\/ul>\n<p>\u9019\u4e9b\u5be6\u9ad4\u4e4b\u9593\u7684\u95dc\u4fc2\u53ef\u4ee5\u7528ER\u5716\uff08\u5be6\u9ad4\u95dc\u4fc2\u5716\uff09\u4f86\u8868\u793a\u3002\u8209\u4f8b\u4f86\u8aaa\uff0c\u4e00\u500b\u5ba2\u6236\u53ef\u4ee5\u6709\u591a\u500b\u8a02\u55ae\uff0c\u800c\u6bcf\u500b\u8a02\u55ae\u53c8\u53ef\u4ee5\u5305\u542b\u591a\u7a2e\u81ea\u884c\u8eca\u3002\u9019\u6a23\u7684\u8a2d\u8a08\u80fd\u5920\u6709\u6548\u5730\u7ba1\u7406\u548c\u67e5\u8a62\u6578\u64da\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e6%94%b6%e9%9b%86%e8%88%87%e5%ad%98%e5%84%b2-HvQVKXqUIH\">\u6578\u64da\u6536\u96c6\u8207\u5b58\u5132<\/h2>\n<p>\u6578\u64da\u7684\u6536\u96c6\u53ef\u4ee5\u901a\u904e\u591a\u7a2e\u65b9\u5f0f\u9032\u884c\uff0c\u4f8b\u5982\u7dda\u4e0a\u5546\u5e97\u7684\u4ea4\u6613\u8a18\u9304\u3001\u5ba2\u6236\u8abf\u67e5\u3001\u793e\u4ea4\u5a92\u9ad4\u4e92\u52d5\u7b49\u3002\u9019\u4e9b\u6578\u64da\u53ef\u4ee5\u5b58\u5132\u5728\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u4e2d\uff0c\u5982MySQL\u6216PostgreSQL\uff0c\u4e26\u4f7f\u7528SQL\u8a9e\u8a00\u9032\u884c\u67e5\u8a62\u548c\u7ba1\u7406\u3002<\/p>\n<pre><code>-- \u5275\u5efa\u81ea\u884c\u8eca\u8868\nCREATE TABLE Bicycles (\n    BicycleID INT PRIMARY KEY,\n    Brand VARCHAR(50),\n    Model VARCHAR(50),\n    Color VARCHAR(20),\n    Price DECIMAL(10, 2)\n);\n\n-- \u5275\u5efa\u5ba2\u6236\u8868\nCREATE TABLE Customers (\n    CustomerID INT PRIMARY KEY,\n    Name VARCHAR(100),\n    ContactInfo VARCHAR(100),\n    Address VARCHAR(255)\n);\n\n-- \u5275\u5efa\u8a02\u55ae\u8868\nCREATE TABLE Orders (\n    OrderID INT PRIMARY KEY,\n    OrderDate DATE,\n    CustomerID INT,\n    BicycleID INT,\n    Quantity INT,\n    FOREIGN KEY (CustomerID) REFERENCES Customers(CustomerID),\n    FOREIGN KEY (BicycleID) REFERENCES Bicycles(BicycleID)\n);\n<\/code><\/pre>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%88%86%e6%9e%90-HvQVKXqUIH\">\u6578\u64da\u5206\u6790<\/h2>\n<p>\u6578\u64da\u5206\u6790\u662f\u5f9e\u6578\u64da\u4e2d\u63d0\u53d6\u6709\u7528\u4fe1\u606f\u7684\u904e\u7a0b\u3002\u5728\u81ea\u884c\u8eca\u92b7\u552e\u6578\u64da\u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u9032\u884c\u591a\u7a2e\u5206\u6790\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li><strong>\u92b7\u552e\u8da8\u52e2\u5206\u6790<\/strong>\uff1a\u901a\u904e\u5206\u6790\u4e0d\u540c\u6642\u9593\u6bb5\u7684\u92b7\u552e\u6578\u64da\uff0c\u4e86\u89e3\u92b7\u552e\u7684\u9ad8\u5cf0\u671f\u548c\u4f4e\u8c37\u671f\u3002<\/li>\n<li><strong>\u5ba2\u6236\u884c\u70ba\u5206\u6790<\/strong>\uff1a\u5206\u6790\u5ba2\u6236\u7684\u8cfc\u8cb7\u7fd2\u6163\uff0c\u4e86\u89e3\u54ea\u4e9b\u54c1\u724c\u6216\u578b\u865f\u6700\u53d7\u6b61\u8fce\u3002<\/li>\n<li><strong>\u5eab\u5b58\u7ba1\u7406<\/strong>\uff1a\u6839\u64da\u92b7\u552e\u6578\u64da\u9810\u6e2c\u672a\u4f86\u7684\u5eab\u5b58\u9700\u6c42\uff0c\u907f\u514d\u5eab\u5b58\u904e\u5269\u6216\u77ed\u7f3a\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u4f7f\u7528SQL\u67e5\u8a62\u4f86\u7372\u53d6\u67d0\u4e00\u54c1\u724c\u7684\u92b7\u552e\u7e3d\u984d\uff1a<\/p>\n<pre><code>SELECT SUM(Price * Quantity) AS TotalSales\nFROM Orders\nJOIN Bicycles ON Orders.BicycleID = Bicycles.BicycleID\nWHERE Brand = '\u7279\u5b9a\u54c1\u724c';\n<\/code><\/pre>\n<h2 id=\"%e6%87%89%e7%94%a8%e6%a1%88%e4%be%8b-HvQVKXqUIH\">\u61c9\u7528\u6848\u4f8b<\/h2>\n<p>\u8a31\u591a\u81ea\u884c\u8eca\u92b7\u552e\u516c\u53f8\u5df2\u7d93\u958b\u59cb\u5229\u7528\u6578\u64da\u5eab\u6280\u8853\u4f86\u63d0\u5347\u696d\u52d9\u6548\u7387\u3002\u4f8b\u5982\uff0c\u4e00\u5bb6\u81ea\u884c\u8eca\u96f6\u552e\u5546\u901a\u904e\u5206\u6790\u92b7\u552e\u6578\u64da\uff0c\u767c\u73fe\u67d0\u4e00\u578b\u865f\u7684\u81ea\u884c\u8eca\u5728\u590f\u5b63\u92b7\u552e\u7279\u5225\u597d\uff0c\u65bc\u662f\u4ed6\u5011\u5728\u590f\u5b63\u524d\u589e\u52a0\u4e86\u8a72\u578b\u865f\u7684\u5eab\u5b58\uff0c\u6700\u7d42\u63d0\u9ad8\u4e86\u92b7\u552e\u984d\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-HvQVKXqUIH\">\u7d50\u8ad6<\/h2>\n<p>\u81ea\u884c\u8eca\u92b7\u552e\u6578\u64da\u7684\u5206\u6790\u4e0d\u50c5\u80fd\u5920\u5e6b\u52a9\u4f01\u696d\u505a\u51fa\u66f4\u660e\u667a\u7684\u6c7a\u7b56\uff0c\u9084\u80fd\u63d0\u5347\u5ba2\u6236\u6eff\u610f\u5ea6\u548c\u696d\u52d9\u6548\u7387\u3002\u96a8\u8457\u6578\u64da\u5eab\u6280\u8853\u7684\u767c\u5c55\uff0c\u672a\u4f86\u7684\u5546\u696d\u74b0\u5883\u5c07\u66f4\u52a0\u4f9d\u8cf4\u6578\u64da\u9a45\u52d5\u7684\u6c7a\u7b56\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5229\u7528\u6578\u64da\u5eab\u6280\u8853\u4f86\u63d0\u5347\u696d\u52d9\u6548\u7387\u611f\u8208\u8da3\uff0c\u6216\u9700\u8981\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> 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