{"id":175139,"date":"2024-11-08T03:04:51","date_gmt":"2024-11-07T19:04:51","guid":{"rendered":"https:\/\/server.hk\/cnblog\/175139\/"},"modified":"2024-11-08T03:04:52","modified_gmt":"2024-11-07T19:04:52","slug":"%e5%a6%82%e4%bd%95%e5%af%a6%e7%8f%be%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e5%a4%9a%e5%b0%8d%e5%a4%9a%e6%9f%a5%e8%a9%a2%ef%bc%9f-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%a4%9a%e5%b0%8d%e5%a4%9a%e6%9f%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/175139\/","title":{"rendered":"\u5982\u4f55\u5be6\u73fe\u6578\u64da\u5eab\u4e2d\u7684\u591a\u5c0d\u591a\u67e5\u8a62\uff1f (\u6578\u64da\u5eab\u591a\u5c0d\u591a\u67e5\u8a62)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e5%af%a6%e7%8f%be%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e5%a4%9a%e5%b0%8d%e5%a4%9a%e6%9f%a5%e8%a9%a2%ef%bc%9f-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%a4%9a%e5%b0%8d%e5%a4%9a%e6%9f%a5-zpdTOSKWAI\">\u5982\u4f55\u5be6\u73fe\u6578\u64da\u5eab\u4e2d\u7684\u591a\u5c0d\u591a\u67e5\u8a62\uff1f (\u6578\u64da\u5eab\u591a\u5c0d\u591a\u67e5\u8a62)<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u591a\u5c0d\u591a\u95dc\u4fc2\u662f\u4e00\u7a2e\u5e38\u898b\u7684\u95dc\u4fc2\u985e\u578b\uff0c\u901a\u5e38\u51fa\u73fe\u5728\u9700\u8981\u5c07\u591a\u500b\u5be6\u9ad4\u76f8\u4e92\u95dc\u806f\u7684\u60c5\u6cc1\u4e0b\u3002\u4f8b\u5982\uff0c\u5728\u4e00\u500b\u5b78\u751f\u548c\u8ab2\u7a0b\u7684\u7cfb\u7d71\u4e2d\uff0c\u4e00\u500b\u5b78\u751f\u53ef\u4ee5\u9078\u64c7\u591a\u9580\u8ab2\u7a0b\uff0c\u800c\u4e00\u9580\u8ab2\u7a0b\u4e5f\u53ef\u4ee5\u88ab\u591a\u500b\u5b78\u751f\u9078\u64c7\u3002\u9019\u7a2e\u60c5\u6cc1\u4e0b\uff0c\u5982\u4f55\u6709\u6548\u5730\u5be6\u73fe\u591a\u5c0d\u591a\u67e5\u8a62\u6210\u70ba\u4e86\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\u7684\u4e00\u500b\u91cd\u8981\u8ab2\u984c\u3002<\/p>\n<h2 id=\"%e5%a4%9a%e5%b0%8d%e5%a4%9a%e9%97%9c%e4%bf%82%e7%9a%84%e5%af%a6%e7%8f%be-zpdTOSKWAI\">\u591a\u5c0d\u591a\u95dc\u4fc2\u7684\u5be6\u73fe<\/h2>\n<p>\u8981\u5be6\u73fe\u591a\u5c0d\u591a\u95dc\u4fc2\uff0c\u901a\u5e38\u9700\u8981\u4f7f\u7528\u4e00\u500b\u4e2d\u4ecb\u8868\uff08\u4e5f\u7a31\u70ba\u806f\u7d50\u8868\u6216\u4ea4\u53c9\u8868\uff09\u3002\u9019\u500b\u4e2d\u4ecb\u8868\u5c07\u5169\u500b\u5be6\u9ad4\u7684\u4e3b\u9375\u4f5c\u70ba\u5916\u9375\uff0c\u5f9e\u800c\u5efa\u7acb\u8d77\u5b83\u5011\u4e4b\u9593\u7684\u95dc\u806f\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e5%ad%b8%e7%94%9f%e8%88%87%e8%aa%b2%e7%a8%8b-zpdTOSKWAI\">\u793a\u4f8b\uff1a\u5b78\u751f\u8207\u8ab2\u7a0b<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u5169\u500b\u8868\uff1a<code>Students<\/code>\uff08\u5b78\u751f\uff09\u548c<code>Courses<\/code>\uff08\u8ab2\u7a0b\uff09\u3002<\/p>\n<pre><code>CREATE TABLE Students (\n    student_id INT PRIMARY KEY,\n    student_name VARCHAR(100)\n);\n\nCREATE TABLE Courses (\n    course_id INT PRIMARY KEY,\n    course_name VARCHAR(100)\n);\n<\/code><\/pre>\n<p>\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u9700\u8981\u5275\u5efa\u4e00\u500b\u4e2d\u4ecb\u8868\u4f86\u5b58\u5132\u5b78\u751f\u548c\u8ab2\u7a0b\u4e4b\u9593\u7684\u95dc\u4fc2\uff1a<\/p>\n<pre><code>CREATE TABLE Student_Courses (\n    student_id INT,\n    course_id INT,\n    PRIMARY KEY (student_id, course_id),\n    FOREIGN KEY (student_id) REFERENCES Students(student_id),\n    FOREIGN KEY (course_id) REFERENCES Courses(course_id)\n);\n<\/code><\/pre>\n<h2 id=\"%e5%9f%b7%e8%a1%8c%e5%a4%9a%e5%b0%8d%e5%a4%9a%e6%9f%a5%e8%a9%a2-zpdTOSKWAI\">\u57f7\u884c\u591a\u5c0d\u591a\u67e5\u8a62<\/h2>\n<p>\u4e00\u65e6\u8a2d\u7f6e\u4e86\u4e2d\u4ecb\u8868\uff0c\u6211\u5011\u5c31\u53ef\u4ee5\u9032\u884c\u591a\u5c0d\u591a\u67e5\u8a62\u3002\u5047\u8a2d\u6211\u5011\u60f3\u67e5\u8a62\u6240\u6709\u9078\u4fee\u67d0\u9580\u8ab2\u7a0b\u7684\u5b78\u751f\uff0c\u6216\u8005\u67e5\u8a62\u67d0\u4f4d\u5b78\u751f\u6240\u9078\u4fee\u7684\u6240\u6709\u8ab2\u7a0b\u3002<\/p>\n<h3 id=\"%e6%9f%a5%e8%a9%a2%e9%81%b8%e4%bf%ae%e6%9f%90%e9%96%80%e8%aa%b2%e7%a8%8b%e7%9a%84%e5%ad%b8%e7%94%9f-zpdTOSKWAI\">\u67e5\u8a62\u9078\u4fee\u67d0\u9580\u8ab2\u7a0b\u7684\u5b78\u751f<\/h3>\n<pre><code>SELECT s.student_name\nFROM Students s\nJOIN Student_Courses sc ON s.student_id = sc.student_id\nJOIN Courses c ON sc.course_id = c.course_id\nWHERE c.course_name = '\u6578\u64da\u5eab\u7cfb\u7d71';\n<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u9078\u4fee\u300c\u6578\u64da\u5eab\u7cfb\u7d71\u300d\u8ab2\u7a0b\u7684\u5b78\u751f\u59d3\u540d\u3002<\/p>\n<h3 id=\"%e6%9f%a5%e8%a9%a2%e6%9f%90%e4%bd%8d%e5%ad%b8%e7%94%9f%e6%89%80%e9%81%b8%e4%bf%ae%e7%9a%84%e6%89%80%e6%9c%89%e8%aa%b2%e7%a8%8b-zpdTOSKWAI\">\u67e5\u8a62\u67d0\u4f4d\u5b78\u751f\u6240\u9078\u4fee\u7684\u6240\u6709\u8ab2\u7a0b<\/h3>\n<pre><code>SELECT c.course_name\nFROM Courses c\nJOIN Student_Courses sc ON c.course_id = sc.course_id\nJOIN Students s ON sc.student_id = s.student_id\nWHERE s.student_name = '\u5f35\u4e09';\n<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u5b78\u751f\u300c\u5f35\u4e09\u300d\u6240\u9078\u4fee\u7684\u6240\u6709\u8ab2\u7a0b\u540d\u7a31\u3002<\/p>\n<h2 id=\"%e6%80%a7%e8%83%bd%e8%80%83%e9%87%8f-zpdTOSKWAI\">\u6027\u80fd\u8003\u91cf<\/h2>\n<p>\u5728\u9032\u884c\u591a\u5c0d\u591a\u67e5\u8a62\u6642\uff0c\u6027\u80fd\u662f\u4e00\u500b\u91cd\u8981\u7684\u8003\u91cf\u56e0\u7d20\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u52a0\uff0c\u67e5\u8a62\u7684\u6548\u7387\u53ef\u80fd\u6703\u53d7\u5230\u5f71\u97ff\u3002\u70ba\u4e86\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u70ba\u4e2d\u4ecb\u8868\u7684\u5916\u9375\u5efa\u7acb\u7d22\u5f15\uff0c\u4ee5\u52a0\u5feb\u67e5\u8a62\u901f\u5ea6\u3002<\/li>\n<li>\u5b9a\u671f\u9032\u884c\u6578\u64da\u5eab\u512a\u5316\uff0c\u6e05\u7406\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u3002<\/li>\n<li>\u4f7f\u7528\u9069\u7576\u7684\u67e5\u8a62\u8a9e\u53e5\uff0c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u806f\u63a5\u64cd\u4f5c\u3002<\/li>\n<\/ul>\n<h2 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href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u7121\u8ad6\u662f\u6578\u64da\u5eab\u7ba1\u7406\u9084\u662f\u5176\u4ed6\u9700\u6c42\uff0cServer.HK\u90fd\u80fd\u63d0\u4f9b\u7a69\u5b9a\u7684\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u5be6\u73fe\u591a\u5c0d\u591a\u67e5\u8a62\uff0c\u63a2\u7d22\u95dc\u806f\u8868\u7684\u4f7f\u7528\u53ca\u6700\u4f73\u5be6\u8e10\uff0c\u63d0\u5347\u6578\u64da\u6aa2\u7d22\u6548\u7387\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-175139","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175139","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=175139"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175139\/revisions"}],"predecessor-version":[{"id":175140,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175139\/revisions\/175140"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=175139"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=175139"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=175139"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}