{"id":200083,"date":"2025-05-06T12:10:04","date_gmt":"2025-05-06T04:10:04","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200083\/"},"modified":"2025-05-06T12:10:04","modified_gmt":"2025-05-06T04:10:04","slug":"mysql%e4%b8%ad%e5%a6%82%e4%bd%95%e5%ae%9e%e7%8e%b0%e8%87%aa%e5%8a%a8%e8%bf%9e%e6%8e%a5%e4%b8%bb%e9%94%ae%e5%92%8c%e5%a4%96%e9%94%ae%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200083\/","title":{"rendered":"MySQL\u4e2d\u5982\u4f55\u5b9e\u73b0\u81ea\u52a8\u8fde\u63a5\u4e3b\u952e\u548c\u5916\u952e\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

MySQL\u4e2d\u5982\u4f55\u5b9e\u73b0\u81ea\u52a8\u8fde\u63a5\u4e3b\u952e\u548c\u5916\u952e\uff1f<\/h1>\n

MySQL\u4e2d\u7684\u5916\u952e\u548c\u4e3b\u952e\u8fde\u63a5\u53ef\u901a\u8fc7\u521b\u5efa\u4e3b\u952e\uff08\u552f\u4e00\u6807\u8bc6\u8bb0\u5f55\uff09\u548c\u5916\u952e\uff08\u5efa\u7acb\u8868\u95f4\u5173\u8054\uff09\u5b9e\u73b0\u3002\u5916\u952e\u5c06\u5f15\u7528\u53e6\u4e00\u4e2a\u8868\u4e2d\u7684\u4e3b\u952e\uff0c\u786e\u4fdd\u6570\u636e\u5b8c\u6574\u6027\uff0c\u9632\u6b62\u63d2\u5165\u4e0d\u5b58\u5728\u8bb0\u5f55\u7684\u5f15\u7528\u3002\u672c\u6559\u7a0b\u5c06\u901a\u8fc7\u5177\u4f53\u4ee3\u7801\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528\u4e3b\u952e\u548c\u5916\u952e\u5728MySQL\u4e2d\u5b9e\u73b0\u6570\u636e\u8868\u4e4b\u95f4\u7684\u81ea\u52a8\u8fde\u63a5\uff0c\u4ece\u800c\u66f4\u597d\u5730\u7ba1\u7406\u548c\u786e\u4fdd\u6570\u636e\u7684\u4e00\u81f4\u6027\u3002<\/p>\n

MySQL\u5916\u952e\u548c\u4e3b\u952e\u5982\u4f55\u5b9e\u73b0\u81ea\u52a8\u8fde\u63a5\uff1f<\/p>\n

MySQL\u662f\u4e00\u79cd\u6d41\u884c\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u5b83\u652f\u6301\u4f7f\u7528\u5916\u952e\u548c\u4e3b\u952e\u6765\u5efa\u7acb\u6570\u636e\u8868\u4e4b\u95f4\u7684\u5173\u8054\u5173\u7cfb\u3002\u5728\u6570\u636e\u5e93\u8bbe\u8ba1\u4e2d\uff0c\u5916\u952e\u548c\u4e3b\u952e\u662f\u975e\u5e38\u91cd\u8981\u7684\u6982\u5ff5\uff0c\u5b83\u4eec\u53ef\u4ee5\u5e2e\u52a9\u786e\u4fdd\u6570\u636e\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002\u90a3\u4e48\uff0c\u5982\u4f55\u5728MySQL\u4e2d\u5b9e\u73b0\u5916\u952e\u548c\u4e3b\u952e\u4e4b\u95f4\u7684\u81ea\u52a8\u8fde\u63a5\u5462\uff1f\u63a5\u4e0b\u6765\u5c06\u901a\u8fc7\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u6765\u8be6\u7ec6\u4ecb\u7ecd\u3002<\/p>\n

\u9996\u5148\uff0c\u8ba9\u6211\u4eec\u6765\u4e86\u89e3\u4e00\u4e0b\u5916\u952e\u548c\u4e3b\u952e\u7684\u5b9a\u4e49\u548c\u4f5c\u7528\uff1a<\/p>\n

    \n
  1. \u4e3b\u952e\uff08Primary Key\uff09\uff1a\u4e3b\u952e\u662f\u4e00\u79cd\u7528\u4e8e\u552f\u4e00\u6807\u8bc6\u6570\u636e\u8868\u4e2d\u6bcf\u4e00\u884c\u8bb0\u5f55\u7684\u5b57\u6bb5\u3002\u901a\u8fc7\u5b9a\u4e49\u4e3b\u952e\uff0c\u53ef\u4ee5\u786e\u4fdd\u6bcf\u6761\u8bb0\u5f55\u90fd\u6709\u4e00\u4e2a\u552f\u4e00\u7684\u6807\u8bc6\uff0c\u4ece\u800c\u65b9\u4fbf\u8fdb\u884c\u6570\u636e\u7684\u68c0\u7d22\u548c\u66f4\u65b0\u3002<\/li>\n
  2. \u5916\u952e\uff08Foreign Key\uff09\uff1a\u5916\u952e\u662f\u4e00\u79cd\u7528\u4e8e\u5efa\u7acb\u4e0d\u540c\u6570\u636e\u8868\u4e4b\u95f4\u5173\u8054\u5173\u7cfb\u7684\u5b57\u6bb5\u3002\u901a\u8fc7\u5b9a\u4e49\u5916\u952e\uff0c\u53ef\u4ee5\u5b9e\u73b0\u8868\u4e0e\u8868\u4e4b\u95f4\u7684\u8054\u7cfb\uff0c\u786e\u4fdd\u6570\u636e\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002<\/li>\n<\/ol>\n

    \u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u901a\u8fc7\u4e00\u4e2a\u5177\u4f53\u7684\u4f8b\u5b50\u6765\u6f14\u793a\u5982\u4f55\u5728MySQL\u4e2d\u5b9e\u73b0\u5916\u952e\u548c\u4e3b\u952e\u4e4b\u95f4\u7684\u81ea\u52a8\u8fde\u63a5\u3002\u5047\u8bbe\u6211\u4eec\u6709\u4e24\u4e2a\u6570\u636e\u8868\uff0c\u4e00\u4e2a\u662f\u5b66\u751f\u8868\uff08students\uff09\uff0c\u53e6\u4e00\u4e2a\u662f\u8bfe\u7a0b\u8868\uff08courses\uff09\uff0c\u5b83\u4eec\u4e4b\u95f4\u5b58\u5728\u4e00\u5bf9\u591a\u7684\u5173\u7cfb\uff0c\u5373\u4e00\u4e2a\u5b66\u751f\u53ef\u4ee5\u9009\u62e9\u591a\u95e8\u8bfe\u7a0b\u3002<\/p>\n

    \u9996\u5148\uff0c\u6211\u4eec\u6765\u521b\u5efa\u5b66\u751f\u8868\uff08students\uff09\uff1a<\/p>\n

    CREATE TABLE students (\n    student_id INT PRIMARY KEY,\n    student_name VARCHAR(50)\n);<\/pre>\n
    \u7136\u540e\uff0c\u6211\u4eec\u521b\u5efa\u8bfe\u7a0b\u8868\uff08courses\uff09\uff1a<\/p>\n
    CREATE TABLE courses (\n    course_id INT PRIMARY KEY,\n    course_name VARCHAR(50),\n    student_id INT,\n    FOREIGN KEY (student_id) REFERENCES students(student_id)\n);<\/pre>\n
    \u5728\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u5728\u8bfe\u7a0b\u8868\uff08courses\uff09\u4e2d\u5b9a\u4e49\u4e86\u4e00\u4e2a\u5916\u952e\uff08student_id\uff09\uff0c\u5b83\u4e0e\u5b66\u751f\u8868\uff08students\uff09\u4e2d\u7684\u4e3b\u952e\uff08student_id\uff09\u5efa\u7acb\u4e86\u5173\u8054\u5173\u7cfb\u3002\u8fd9\u6837\uff0c\u5f53\u6211\u4eec\u5411\u8bfe\u7a0b\u8868\u4e2d\u63d2\u5165\u6570\u636e\u65f6\uff0c\u7cfb\u7edf\u4f1a\u81ea\u52a8\u68c0\u67e5\u5b66\u751f\u8868\u4e2d\u662f\u5426\u5b58\u5728\u5bf9\u5e94\u7684\u5b66\u751f\u8bb0\u5f55\uff0c\u786e\u4fdd\u6570\u636e\u7684\u5b8c\u6574\u6027\u3002<\/p>\n
    \u901a\u8fc7\u4ee5\u4e0a\u793a\u4f8b\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u5728MySQL\u4e2d\u5982\u4f55\u5229\u7528\u4e3b\u952e\u548c\u5916\u952e\u6765\u5b9e\u73b0\u6570\u636e\u8868\u4e4b\u95f4\u7684\u81ea\u52a8\u8fde\u63a5\u3002\u901a\u8fc7\u5408\u7406\u8bbe\u8ba1\u6570\u636e\u5e93\u7ed3\u6784\uff0c\u53ef\u4ee5\u66f4\u597d\u5730\u7ba1\u7406\u6570\u636e\uff0c\u786e\u4fdd\u6570\u636e\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002\u5e0c\u671b\u8fd9\u7bc7\u6587\u7ae0\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n
    \u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\u4e3b\u673a\u5b9d\u8d1d\uff01\u66f4\u591a\u5173\u4e8e\u6570\u636e\u5e93\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\u3002<\/p>\n
    \n
    \n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
    MySQL\u4e2d\u5982\u4f55\u5b9e\u73b0\u81ea\u52a8\u8fde\u63a5\u4e3b\u952e...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-200083","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200083","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=200083"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200083\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200083"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200083"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200083"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}