{"id":196215,"date":"2024-11-13T21:26:26","date_gmt":"2024-11-13T13:26:26","guid":{"rendered":"https:\/\/server.hk\/cnblog\/196215\/"},"modified":"2024-11-13T21:26:28","modified_gmt":"2024-11-13T13:26:28","slug":"%e6%8e%8c%e6%8f%a1%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%80%e5%b0%8d%e5%a4%9a%e9%97%9c%e4%bf%82%e8%88%87%e5%a4%96%e9%8d%b5%e7%9a%84%e9%97%9c%e4%bf%82-%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%80%e5%b0%8d%e5%a4%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/196215\/","title":{"rendered":"\u638c\u63e1\u6578\u64da\u5eab\u4e00\u5c0d\u591a\u95dc\u4fc2\u8207\u5916\u9375\u7684\u95dc\u4fc2 (\u6578\u64da\u5eab\u4e00\u5c0d\u591a\u95dc\u4fc2\u5916\u9375)"},"content":{"rendered":"<h1 id=\"%e6%8e%8c%e6%8f%a1%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%80%e5%b0%8d%e5%a4%9a%e9%97%9c%e4%bf%82%e8%88%87%e5%a4%96%e9%8d%b5%e7%9a%84%e9%97%9c%e4%bf%82-%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%80%e5%b0%8d%e5%a4%9a-wntBBxyXbi\">\u638c\u63e1\u6578\u64da\u5eab\u4e00\u5c0d\u591a\u95dc\u4fc2\u8207\u5916\u9375\u7684\u95dc\u4fc2 (\u6578\u64da\u5eab\u4e00\u5c0d\u591a\u95dc\u4fc2\u5916\u9375)<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u7406\u89e3\u4e00\u5c0d\u591a\u95dc\u4fc2\u53ca\u5176\u8207\u5916\u9375\u7684\u95dc\u4fc2\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u9019\u4e0d\u50c5\u6709\u52a9\u65bc\u6578\u64da\u7684\u7d44\u7e54\u548c\u7ba1\u7406\uff0c\u9084\u80fd\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u548c\u6578\u64da\u5b8c\u6574\u6027\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u4e00\u5c0d\u591a\u95dc\u4fc2\u7684\u5b9a\u7fa9\u3001\u5916\u9375\u7684\u4f5c\u7528\u4ee5\u53ca\u5982\u4f55\u5728\u5be6\u969b\u61c9\u7528\u4e2d\u5be6\u73fe\u9019\u4e9b\u6982\u5ff5\u3002<\/p>\n<h2 id=\"%e4%b8%80%e5%b0%8d%e5%a4%9a%e9%97%9c%e4%bf%82%e7%9a%84%e5%ae%9a%e7%be%a9-wntBBxyXbi\">\u4e00\u5c0d\u591a\u95dc\u4fc2\u7684\u5b9a\u7fa9<\/h2>\n<p>\u4e00\u5c0d\u591a\u95dc\u4fc2\u662f\u6578\u64da\u5eab\u4e2d\u6700\u5e38\u898b\u7684\u95dc\u4fc2\u985e\u578b\u4e4b\u4e00\u3002\u5728\u9019\u7a2e\u95dc\u4fc2\u4e2d\uff0c\u4e00\u500b\u8a18\u9304\u53ef\u4ee5\u8207\u591a\u500b\u8a18\u9304\u76f8\u95dc\u806f\uff0c\u800c\u53e6\u4e00\u500b\u8a18\u9304\u5247\u53ea\u80fd\u8207\u4e00\u500b\u8a18\u9304\u76f8\u95dc\u806f\u3002\u4f8b\u5982\uff0c\u5728\u4e00\u500b\u5b78\u6821\u6578\u64da\u5eab\u4e2d\uff0c\u4e00\u4f4d\u6559\u5e2b\u53ef\u4ee5\u6559\u6388\u591a\u9580\u8ab2\u7a0b\uff0c\u4f46\u6bcf\u9580\u8ab2\u7a0b\u53ea\u80fd\u7531\u4e00\u4f4d\u6559\u5e2b\u6559\u6388\u3002\u9019\u7a2e\u95dc\u4fc2\u53ef\u4ee5\u7528\u4ee5\u4e0b\u65b9\u5f0f\u8868\u793a\uff1a<\/p>\n<ul>\n<li>\u6559\u5e2b (Teacher) \u8868\uff1a\u5305\u542b\u6559\u5e2b\u7684\u57fa\u672c\u4fe1\u606f\uff0c\u5982\u6559\u5e2bID\u3001\u59d3\u540d\u7b49\u3002<\/li>\n<li>\u8ab2\u7a0b (Course) \u8868\uff1a\u5305\u542b\u8ab2\u7a0b\u7684\u57fa\u672c\u4fe1\u606f\uff0c\u5982\u8ab2\u7a0bID\u3001\u8ab2\u7a0b\u540d\u7a31\u3001\u6559\u5e2bID\u7b49\u3002<\/li>\n<\/ul>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6559\u5e2bID\u5728\u8ab2\u7a0b\u8868\u4e2d\u4f5c\u70ba\u5916\u9375\uff0c\u6307\u5411\u6559\u5e2b\u8868\u4e2d\u7684\u6559\u5e2bID\uff0c\u5f9e\u800c\u5efa\u7acb\u4e00\u5c0d\u591a\u7684\u95dc\u4fc2\u3002<\/p>\n<h2 id=\"%e5%a4%96%e9%8d%b5%e7%9a%84%e4%bd%9c%e7%94%a8-wntBBxyXbi\">\u5916\u9375\u7684\u4f5c\u7528<\/h2>\n<p>\u5916\u9375\u662f\u7528\u4f86\u5efa\u7acb\u548c\u5f37\u5316\u5169\u500b\u8868\u4e4b\u9593\u95dc\u4fc2\u7684\u5b57\u6bb5\u3002\u5b83\u662f\u4e00\u500b\u8868\u4e2d\u7684\u5b57\u6bb5\uff0c\u6307\u5411\u53e6\u4e00\u500b\u8868\u7684\u4e3b\u9375\u3002\u5916\u9375\u7684\u4e3b\u8981\u4f5c\u7528\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u5b8c\u6574\u6027\uff1a<\/strong>\u5916\u9375\u78ba\u4fdd\u4e86\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002\u7576\u4e00\u500b\u8868\u4e2d\u7684\u8a18\u9304\u88ab\u522a\u9664\u6216\u66f4\u65b0\u6642\uff0c\u76f8\u95dc\u7684\u5916\u9375\u8a18\u9304\u4e5f\u6703\u53d7\u5230\u5f71\u97ff\uff0c\u5f9e\u800c\u9632\u6b62\u51fa\u73fe\u5b64\u7acb\u7684\u6578\u64da\u3002<\/li>\n<li><strong>\u6578\u64da\u95dc\u806f\uff1a<\/strong>\u5916\u9375\u4f7f\u5f97\u4e0d\u540c\u8868\u4e4b\u9593\u7684\u6578\u64da\u53ef\u4ee5\u9032\u884c\u95dc\u806f\u67e5\u8a62\uff0c\u5f9e\u800c\u63d0\u9ad8\u67e5\u8a62\u7684\u9748\u6d3b\u6027\u548c\u6548\u7387\u3002<\/li>\n<li><strong>\u7d04\u675f\u689d\u4ef6\uff1a<\/strong>\u5916\u9375\u53ef\u4ee5\u8a2d\u7f6e\u7d04\u675f\u689d\u4ef6\uff0c\u9632\u6b62\u4e0d\u5408\u6cd5\u7684\u6578\u64da\u63d2\u5165\u3002\u4f8b\u5982\uff0c\u4e0d\u80fd\u5728\u8ab2\u7a0b\u8868\u4e2d\u63d2\u5165\u4e00\u500b\u4e0d\u5b58\u5728\u7684\u6559\u5e2bID\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%af%a6%e7%8f%be%e4%b8%80%e5%b0%8d%e5%a4%9a%e9%97%9c%e4%bf%82%e7%9a%84%e7%a4%ba%e4%be%8b-wntBBxyXbi\">\u5be6\u73fe\u4e00\u5c0d\u591a\u95dc\u4fc2\u7684\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684SQL\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u5be6\u73fe\u4e00\u5c0d\u591a\u95dc\u4fc2\uff1a<\/p>\n<pre><code>\n-- \u5275\u5efa\u6559\u5e2b\u8868\nCREATE TABLE Teacher (\n    TeacherID INT PRIMARY KEY,\n    Name VARCHAR(100) NOT NULL\n);\n\n-- \u5275\u5efa\u8ab2\u7a0b\u8868\uff0c\u4e26\u8a2d\u7f6e\u5916\u9375\nCREATE TABLE Course (\n    CourseID INT PRIMARY KEY,\n    CourseName VARCHAR(100) NOT NULL,\n    TeacherID INT,\n    FOREIGN KEY (TeacherID) REFERENCES Teacher(TeacherID)\n);\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u9996\u5148\u5275\u5efa\u4e86\u6559\u5e2b\u8868\uff0c\u7136\u5f8c\u5275\u5efa\u4e86\u8ab2\u7a0b\u8868\uff0c\u4e26\u5728\u8ab2\u7a0b\u8868\u4e2d\u8a2d\u7f6e\u4e86\u5916\u9375\uff0c\u6307\u5411\u6559\u5e2b\u8868\u7684\u4e3b\u9375\u3002\u9019\u6a23\u5c31\u5efa\u7acb\u4e86\u4e00\u5c0d\u591a\u7684\u95dc\u4fc2\u3002<\/p>\n<h2 id=\"%e6%9f%a5%e8%a9%a2%e4%b8%80%e5%b0%8d%e5%a4%9a%e9%97%9c%e4%bf%82%e7%9a%84%e6%95%b8%e6%93%9a-wntBBxyXbi\">\u67e5\u8a62\u4e00\u5c0d\u591a\u95dc\u4fc2\u7684\u6578\u64da<\/h2>\n<p>\u4e00\u65e6\u5efa\u7acb\u4e86\u9019\u7a2e\u95dc\u4fc2\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528JOIN\u8a9e\u53e5\u4f86\u67e5\u8a62\u76f8\u95dc\u6578\u64da\u3002\u4f8b\u5982\uff0c\u67e5\u8a62\u6240\u6709\u8ab2\u7a0b\u53ca\u5176\u5c0d\u61c9\u7684\u6559\u5e2b\u4fe1\u606f\uff1a<\/p>\n<pre><code>\nSELECT Course.CourseName, Teacher.Name\nFROM Course\nJOIN Teacher ON Course.TeacherID = Teacher.TeacherID;\n<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u8ab2\u7a0b\u53ca\u5176\u5c0d\u61c9\u7684\u6559\u5e2b\u540d\u7a31\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u5229\u7528\u4e00\u5c0d\u591a\u95dc\u4fc2\u4f86\u7372\u53d6\u76f8\u95dc\u6578\u64da\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-wntBBxyXbi\">\u7e3d\u7d50<\/h2>\n<p>\u638c\u63e1\u6578\u64da\u5eab\u7684\u4e00\u5c0d\u591a\u95dc\u4fc2\u53ca\u5916\u9375\u7684\u6982\u5ff5\u5c0d\u65bc\u6578\u64da\u5eab\u8a2d\u8a08\u548c\u7ba1\u7406\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u6b63\u78ba\u5730\u4f7f\u7528\u5916\u9375\uff0c\u6211\u5011\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\uff0c\u4e26\u80fd\u5920\u9748\u6d3b\u5730\u9032\u884c\u6578\u64da\u67e5\u8a62\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u7ba1\u7406\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u82e5\u60a8\u5c0d\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u6216\u5176\u4ed6\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u6578\u64da\u5eab\u4e2d\u4e00\u5c0d\u591a\u95dc\u4fc2\u53ca\u5916\u9375\u7684\u4f5c\u7528\uff0c\u638c\u63e1\u5982\u4f55\u6709\u6548\u8a2d\u8a08\u548c\u7ba1\u7406\u6578\u64da\u7d50\u69cb\u4ee5\u63d0\u5347\u6578\u64da\u5b8c\u6574\u6027\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-196215","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196215","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=196215"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196215\/revisions"}],"predecessor-version":[{"id":196216,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196215\/revisions\/196216"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=196215"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=196215"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=196215"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}