{"id":158745,"date":"2024-11-03T04:27:18","date_gmt":"2024-11-02T20:27:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/158745\/"},"modified":"2024-11-03T04:27:19","modified_gmt":"2024-11-02T20:27:19","slug":"%e9%97%9c%e4%bf%82%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e7%ac%a6%e8%99%9f%e5%8f%8a%e5%85%b6%e4%bd%9c%e7%94%a8-%e9%97%9c%e4%bf%82%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e7%ac%a6%e8%99%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/158745\/","title":{"rendered":"\u95dc\u4fc2\u6578\u64da\u5eab\u4e2d\u7684\u7b26\u865f\u53ca\u5176\u4f5c\u7528 (\u95dc\u4fc2\u6578\u64da\u5eab\u7684\u7b26\u865f)"},"content":{"rendered":"<h1 id=\"%e9%97%9c%e4%bf%82%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e7%ac%a6%e8%99%9f%e5%8f%8a%e5%85%b6%e4%bd%9c%e7%94%a8-%e9%97%9c%e4%bf%82%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e7%ac%a6%e8%99%9f-qoCpysaAOe\">\u95dc\u4fc2\u6578\u64da\u5eab\u4e2d\u7684\u7b26\u865f\u53ca\u5176\u4f5c\u7528 (\u95dc\u4fc2\u6578\u64da\u5eab\u7684\u7b26\u865f)<\/h1>\n<p>\u95dc\u4fc2\u6578\u64da\u5eab\u662f\u4e00\u7a2e\u4ee5\u6578\u64da\u8868\u683c\u5f62\u5f0f\u7d44\u7e54\u6578\u64da\u7684\u7cfb\u7d71\uff0c\u9019\u4e9b\u8868\u683c\u4e4b\u9593\u53ef\u4ee5\u901a\u904e\u7279\u5b9a\u7684\u95dc\u4fc2\u9032\u884c\u806f\u7e6b\u3002\u5728\u95dc\u4fc2\u6578\u64da\u5eab\u4e2d\uff0c\u7b26\u865f\u7684\u4f7f\u7528\u81f3\u95dc\u91cd\u8981\uff0c\u56e0\u70ba\u5b83\u5011\u5e6b\u52a9\u7528\u6236\u7406\u89e3\u6578\u64da\u7684\u7d50\u69cb\u548c\u64cd\u4f5c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u95dc\u4fc2\u6578\u64da\u5eab\u4e2d\u7684\u4e3b\u8981\u7b26\u865f\u53ca\u5176\u4f5c\u7528\u3002<\/p>\n<h2 id=\"1-%e9%97%9c%e4%bf%82%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-qoCpysaAOe\">1. \u95dc\u4fc2\u6578\u64da\u5eab\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u95dc\u4fc2\u6578\u64da\u5eab\u7684\u6838\u5fc3\u662f\u201c\u95dc\u4fc2\u201d\u9019\u4e00\u6982\u5ff5\uff0c\u901a\u5e38\u4ee5\u8868\u683c\u7684\u5f62\u5f0f\u8868\u793a\u3002\u6bcf\u500b\u8868\u683c\u7531\u884c\u548c\u5217\u7d44\u6210\uff0c\u5176\u4e2d\u884c\u4ee3\u8868\u8a18\u9304\uff0c\u5217\u4ee3\u8868\u5c6c\u6027\u3002\u9019\u4e9b\u8868\u683c\u4e4b\u9593\u7684\u95dc\u4fc2\u53ef\u4ee5\u901a\u904e\u5916\u9375\u4f86\u5efa\u7acb\uff0c\u5916\u9375\u662f\u6307\u5411\u53e6\u4e00\u500b\u8868\u683c\u7684\u4e3b\u9375\u7684\u5b57\u6bb5\u3002<\/p>\n<h2 id=\"2-%e7%ac%a6%e8%99%9f%e7%9a%84%e7%a8%ae%e9%a1%9e-qoCpysaAOe\">2. \u7b26\u865f\u7684\u7a2e\u985e<\/h2>\n<p>\u5728\u95dc\u4fc2\u6578\u64da\u5eab\u4e2d\uff0c\u5e38\u898b\u7684\u7b26\u865f\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u4e3b\u9375 (Primary Key)<\/strong>\uff1a\u7528\u65bc\u552f\u4e00\u6a19\u8b58\u8868\u4e2d\u7684\u6bcf\u4e00\u884c\u3002\u4e3b\u9375\u7684\u7b26\u865f\u901a\u5e38\u7528\u201cPK\u201d\u8868\u793a\u3002<\/li>\n<li><strong>\u5916\u9375 (Foreign Key)<\/strong>\uff1a\u7528\u65bc\u5efa\u7acb\u8868\u4e4b\u9593\u7684\u95dc\u4fc2\uff0c\u6307\u5411\u53e6\u4e00\u500b\u8868\u7684\u4e3b\u9375\u3002\u5916\u9375\u7684\u7b26\u865f\u901a\u5e38\u7528\u201cFK\u201d\u8868\u793a\u3002<\/li>\n<li><strong>\u552f\u4e00\u9375 (Unique Key)<\/strong>\uff1a\u78ba\u4fdd\u67d0\u4e00\u5217\u4e2d\u7684\u6240\u6709\u503c\u90fd\u662f\u552f\u4e00\u7684\uff0c\u8207\u4e3b\u9375\u985e\u4f3c\uff0c\u4f46\u5141\u8a31\u7a7a\u503c\u3002<\/li>\n<li><strong>\u7d22\u5f15 (Index)<\/strong>\uff1a\u7528\u65bc\u52a0\u901f\u67e5\u8a62\u7684\u6578\u64da\u7d50\u69cb\uff0c\u901a\u5e38\u4e0d\u6703\u5728\u8868\u4e2d\u986f\u793a\uff0c\u4f46\u5728\u8a2d\u8a08\u6642\u6703\u8003\u616e\u5176\u5b58\u5728\u3002<\/li>\n<\/ul>\n<h2 id=\"3-%e7%ac%a6%e8%99%9f%e7%9a%84%e4%bd%9c%e7%94%a8-qoCpysaAOe\">3. \u7b26\u865f\u7684\u4f5c\u7528<\/h2>\n<p>\u9019\u4e9b\u7b26\u865f\u5728\u95dc\u4fc2\u6578\u64da\u5eab\u4e2d\u626e\u6f14\u8457\u91cd\u8981\u89d2\u8272\uff0c\u5177\u9ad4\u4f5c\u7528\u5982\u4e0b\uff1a<\/p>\n<h3 id=\"3-1-%e6%95%b8%e6%93%9a%e5%ae%8c%e6%95%b4%e6%80%a7-qoCpysaAOe\">3.1 \u6578\u64da\u5b8c\u6574\u6027<\/h3>\n<p>\u4e3b\u9375\u548c\u5916\u9375\u7684\u4f7f\u7528\u78ba\u4fdd\u4e86\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002\u4e3b\u9375\u4fdd\u8b49\u4e86\u6bcf\u689d\u8a18\u9304\u7684\u552f\u4e00\u6027\uff0c\u800c\u5916\u9375\u5247\u78ba\u4fdd\u4e86\u4e0d\u540c\u8868\u4e4b\u9593\u7684\u6578\u64da\u4e00\u81f4\u6027\u3002\u4f8b\u5982\uff0c\u5728\u4e00\u500b\u8a02\u55ae\u7cfb\u7d71\u4e2d\uff0c\u8a02\u55ae\u8868\u7684\u5916\u9375\u53ef\u4ee5\u6307\u5411\u5ba2\u6236\u8868\u7684\u4e3b\u9375\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6bcf\u500b\u8a02\u55ae\u90fd\u5c0d\u61c9\u4e00\u500b\u6709\u6548\u7684\u5ba2\u6236\u3002<\/p>\n<h3 id=\"3-2-%e6%95%b8%e6%93%9a%e6%9f%a5%e8%a9%a2%e6%95%88%e7%8e%87-qoCpysaAOe\">3.2 \u6578\u64da\u67e5\u8a62\u6548\u7387<\/h3>\n<p>\u7d22\u5f15\u7684\u4f7f\u7528\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002\u7576\u6578\u64da\u91cf\u589e\u5927\u6642\uff0c\u6c92\u6709\u7d22\u5f15\u7684\u67e5\u8a62\u53ef\u80fd\u6703\u8b8a\u5f97\u975e\u5e38\u7de9\u6162\u3002\u901a\u904e\u5728\u5e38\u7528\u67e5\u8a62\u7684\u5217\u4e0a\u5efa\u7acb\u7d22\u5f15\uff0c\u53ef\u4ee5\u52a0\u5feb\u6578\u64da\u6aa2\u7d22\u7684\u901f\u5ea6\u3002<\/p>\n<h3 id=\"3-3-%e6%95%b8%e6%93%9a%e9%97%9c%e8%81%af%e6%80%a7-qoCpysaAOe\">3.3 \u6578\u64da\u95dc\u806f\u6027<\/h3>\n<p>\u5916\u9375\u7684\u4f7f\u7528\u4f7f\u5f97\u4e0d\u540c\u8868\u4e4b\u9593\u7684\u6578\u64da\u53ef\u4ee5\u9032\u884c\u95dc\u806f\uff0c\u9019\u5c0d\u65bc\u8907\u96dc\u7684\u6578\u64da\u67e5\u8a62\u548c\u5831\u544a\u751f\u6210\u81f3\u95dc\u91cd\u8981\u3002\u4f8b\u5982\uff0c\u901a\u904e\u5916\u9375\uff0c\u53ef\u4ee5\u8f15\u9b06\u5730\u5f9e\u8a02\u55ae\u8868\u4e2d\u67e5\u8a62\u5230\u76f8\u95dc\u7684\u5ba2\u6236\u4fe1\u606f\u3002<\/p>\n<h2 id=\"4-%e7%ac%a6%e8%99%9f%e7%9a%84%e5%af%a6%e9%9a%9b%e6%87%89%e7%94%a8-qoCpysaAOe\">4. \u7b26\u865f\u7684\u5be6\u969b\u61c9\u7528<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684 SQL \u793a\u4f8b\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u5728\u5275\u5efa\u8868\u6642\u4f7f\u7528\u4e3b\u9375\u548c\u5916\u9375\uff1a<\/p>\n<pre><code>\nCREATE TABLE Customers (\n    CustomerID int NOT NULL,\n    CustomerName varchar(255) NOT NULL,\n    PRIMARY KEY (CustomerID)\n);\n\nCREATE TABLE Orders (\n    OrderID int NOT NULL,\n    OrderDate date NOT NULL,\n    CustomerID int,\n    PRIMARY KEY (OrderID),\n    FOREIGN KEY (CustomerID) REFERENCES Customers(CustomerID)\n);\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0cCustomers \u8868\u7684 CustomerID \u662f\u4e3b\u9375\uff0c\u800c Orders \u8868\u4e2d\u7684 CustomerID \u662f\u5916\u9375\uff0c\u6307\u5411 Customers \u8868\u7684\u4e3b\u9375\u3002\u9019\u6a23\u7684\u8a2d\u8a08\u78ba\u4fdd\u4e86\u6bcf\u500b\u8a02\u55ae\u90fd\u80fd\u5920\u6b63\u78ba\u5730\u95dc\u806f\u5230\u4e00\u500b\u5ba2\u6236\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-qoCpysaAOe\">\u7e3d\u7d50<\/h2>\n<p>\u95dc\u4fc2\u6578\u64da\u5eab\u4e2d\u7684\u7b26\u865f\u5982\u4e3b\u9375\u3001\u5916\u9375\u548c\u7d22\u5f15\u7b49\uff0c\u5c0d\u65bc\u6578\u64da\u7684\u5b8c\u6574\u6027\u3001\u67e5\u8a62\u6548\u7387\u548c\u6578\u64da\u95dc\u806f\u6027\u8d77\u8457\u81f3\u95dc\u91cd\u8981\u7684\u4f5c\u7528\u3002\u7406\u89e3\u9019\u4e9b\u7b26\u865f\u53ca\u5176\u529f\u80fd\uff0c\u5c0d\u65bc\u8a2d\u8a08\u548c\u7ba1\u7406\u9ad8\u6548\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u81f3\u95dc\u91cd\u8981\u3002\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u9999\u6e2f\u4f7f\u7528 <a href=\"https:\/\/server.hk\">VPS<\/a> \u4f86\u642d\u5efa\u95dc\u4fc2\u6578\u64da\u5eab\u6709\u8208\u8da3\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u95dc\u4fc2\u6578\u64da\u5eab\u4e2d\u7684\u7b26\u865f\u53ca\u5176\u4f5c\u7528\uff0c\u4e86\u89e3\u5982\u4f55\u5229\u7528\u9019\u4e9b\u7b26\u865f\u6709\u6548\u7ba1\u7406\u548c\u64cd\u4f5c\u6578\u64da\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-158745","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158745","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=158745"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158745\/revisions"}],"predecessor-version":[{"id":158746,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158745\/revisions\/158746"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=158745"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=158745"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=158745"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}