{"id":200046,"date":"2025-05-06T10:01:23","date_gmt":"2025-05-06T02:01:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200046\/"},"modified":"2025-05-06T10:01:23","modified_gmt":"2025-05-06T02:01:23","slug":"mysql%e6%95%b0%e6%8d%ae%e5%ba%93%e4%b8%ad%e5%a4%96%e9%94%ae%e7%9a%84%e9%87%8d%e8%a6%81%e6%80%a7%e5%92%8c%e5%ba%94%e7%94%a8%e5%ae%9e%e8%b7%b5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200046\/","title":{"rendered":"MySQL\u6570\u636e\u5e93\u4e2d\u5916\u952e\u7684\u91cd\u8981\u6027\u548c\u5e94\u7528\u5b9e\u8df5"},"content":{"rendered":"

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

MySQL\u6570\u636e\u5e93\u4e2d\u5916\u952e\u7684\u91cd\u8981\u6027\u548c\u5e94\u7528\u5b9e\u8df5<\/h1>\n

\u201c\u7eb5\u6709\u75be\u98ce\u6765\uff0c\u4eba\u751f\u4e0d\u8a00\u5f03\u201d\uff0c\u8fd9\u53e5\u8bdd\u9001\u7ed9\u6b63\u5728\u5b66\u4e60\u7684\u670b\u53cb\u4eec\uff0c\u4e5f\u5e0c\u671b\u5728\u9605\u8bfb\u672c\u6587\u540e\uff0c\u80fd\u591f\u771f\u7684\u5e2e\u52a9\u5230\u5927\u5bb6\u3002\u6211\u4e5f\u4f1a\u5728\u540e\u7eed\u7684\u6587\u7ae0\u4e2d\uff0c\u9646\u7eed\u66f4\u65b0\u76f8\u5173\u7684\u6280\u672f\u6587\u7ae0\uff0c\u6709\u597d\u7684\u5efa\u8bae\u6b22\u8fce\u5927\u5bb6\u5728\u8bc4\u8bba\u7559\u8a00\uff0c\u975e\u5e38\u611f\u8c22\uff01<\/p>\n

\u5916\u952e\u5728MySQL\u6570\u636e\u5e93\u4e2d\u7684\u91cd\u8981\u6027\u548c\u5b9e\u8df5\u610f\u4e49<\/p>\n

\u5728MySQL\u6570\u636e\u5e93\u4e2d\uff0c\u5916\u952e\uff08Foreign Key\uff09\u662f\u4e00\u79cd\u7528\u6765\u5efa\u7acb\u4e0d\u540c\u8868\u4e4b\u95f4\u5173\u8054\u5173\u7cfb\u7684\u91cd\u8981\u7ea6\u675f\u3002\u5916\u952e\u7ea6\u675f\u786e\u4fdd\u4e86\u8868\u4e0e\u8868\u4e4b\u95f4\u7684\u6570\u636e\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\uff0c\u80fd\u591f\u6709\u6548\u907f\u514d\u4e0d\u6b63\u786e\u7684\u6570\u636e\u63d2\u5165\u3001\u66f4\u65b0\u6216\u5220\u9664\u64cd\u4f5c\u3002<\/p>\n

\u4e00\u3001\u5916\u952e\u7684\u91cd\u8981\u6027\uff1a<\/p>\n

    \n
  1. \u6570\u636e\u5b8c\u6574\u6027\uff1a\u5916\u952e\u7ea6\u675f\u53ef\u4ee5\u786e\u4fdd\u5728\u4e00\u4e2a\u8868\u4e2d\u7684\u6570\u636e\u5f15\u7528\u53e6\u4e00\u4e2a\u8868\u4e2d\u5b58\u5728\u7684\u6570\u636e\uff0c\u907f\u514d\u56e0\u5916\u90e8\u952e\u9519\u8bef\u5f15\u7528\u6216\u8005\u5f15\u7528\u4e0d\u5b58\u5728\u7684\u6570\u636e\u800c\u5f15\u8d77\u6570\u636e\u5f02\u5e38\u3002<\/li>\n
  2. \u6570\u636e\u4e00\u81f4\u6027\uff1a\u5916\u952e\u53ef\u4ee5\u4fdd\u8bc1\u76f8\u5173\u8868\u4e4b\u95f4\u7684\u6570\u636e\u4fdd\u6301\u4e00\u81f4\uff0c\u786e\u4fdd\u5173\u8054\u5173\u7cfb\u7684\u6b63\u786e\u6027\u3002<\/li>\n
  3. \u6570\u636e\u64cd\u4f5c\u5b89\u5168\u6027\uff1a\u5916\u952e\u7ea6\u675f\u53ef\u4ee5\u907f\u514d\u8bef\u64cd\u4f5c\u5bfc\u81f4\u6570\u636e\u4e0d\u4e00\u81f4\u6216\u8005\u9519\u8bef\u5f15\u7528\uff0c\u63d0\u9ad8\u6570\u636e\u64cd\u4f5c\u7684\u5b89\u5168\u6027\u3002<\/li>\n
  4. \u5feb\u901f\u67e5\u627e\uff1a\u5916\u952e\u53ef\u4ee5\u5e2e\u52a9\u6570\u636e\u5e93\u4f18\u5316\u67e5\u8be2\u64cd\u4f5c\uff0c\u901a\u8fc7\u5efa\u7acb\u5173\u8054\u5173\u7cfb\uff0c\u51cf\u5c11\u591a\u8868\u8fde\u63a5\u67e5\u8be2\u7684\u6027\u80fd\u6d88\u8017\u3002<\/li>\n<\/ol>\n

    \u4e8c\u3001\u5b9e\u8df5\u610f\u4e49\uff1a
    \u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u5916\u952e\u7684\u4f7f\u7528\u6709\u52a9\u4e8e\u63d0\u9ad8\u6570\u636e\u5e93\u7684\u8bbe\u8ba1\u548c\u7ba1\u7406\u6548\u7387\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5b9e\u9645\u5e94\u7528\u573a\u666f\u548c\u5177\u4f53\u4ee3\u7801\u793a\u4f8b\uff1a<\/p>\n

      \n
    1. \u521b\u5efa\u8868\u65f6\u5b9a\u4e49\u5916\u952e\uff1a
      \u5047\u8bbe\u5b58\u5728\u4e24\u4e2a\u8868\uff0c\u4e00\u4e2a\u662f\u5b66\u751f\u8868\uff0c\u4e00\u4e2a\u662f\u8bfe\u7a0b\u8868\uff0c\u5b66\u751f\u8868\u4e2d\u6709\u4e00\u4e2a\u5b57\u6bb5\u6307\u5411\u8bfe\u7a0b\u8868\u4e2d\u7684\u8bfe\u7a0bID\uff0c\u53ef\u4ee5\u901a\u8fc7\u5916\u952e\u7ea6\u675f\u786e\u4fdd\u5b66\u751f\u9009\u62e9\u7684\u8bfe\u7a0b\u662f\u5b58\u5728\u7684\u3002<\/li>\n<\/ol>\n
      CREATE TABLE students (\n    student_id INT PRIMARY KEY,\n    student_name VARCHAR(50),\n    course_id INT,\n    FOREIGN KEY (course_id) REFERENCES courses(course_id)\n);\n\nCREATE TABLE courses (\n    course_id INT PRIMARY KEY,\n    course_name VARCHAR(50)\n);<\/pre>\n
        \n
      1. \u5916\u952e\u7ea7\u8054\u64cd\u4f5c\uff1a
        \u5728\u5efa\u7acb\u5916\u952e\u5173\u7cfb\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u6307\u5b9a\u7ea7\u8054\u64cd\u4f5c\uff0c\u5f53\u4e3b\u8868\u4e2d\u7684\u8bb0\u5f55\u88ab\u4fee\u6539\u6216\u5220\u9664\u65f6\uff0c\u4ece\u8868\u4e2d\u7684\u8bb0\u5f55\u4e5f\u4f1a\u505a\u76f8\u5e94\u7684\u64cd\u4f5c\u3002<\/li>\n<\/ol>\n
        CREATE TABLE orders (\n    order_id INT PRIMARY KEY,\n    customer_id INT,\n    order_date DATE,\n    FOREIGN KEY (customer_id) REFERENCES customers(customer_id) ON DELETE CASCADE\n);\n\nCREATE TABLE customers (\n    customer_id INT PRIMARY KEY,\n    customer_name VARCHAR(50)\n);<\/pre>\n
          \n
        1. \u5916\u952e\u7d22\u5f15\u4f18\u5316\uff1a
          \u5229\u7528\u5916\u952e\u53ef\u4ee5\u5e2e\u52a9MySQL\u4f18\u5316\u67e5\u8be2\u6027\u80fd\uff0c\u901a\u8fc7\u5efa\u7acb\u5916\u952e\u7d22\u5f15\uff0c\u53ef\u4ee5\u52a0\u901f\u67e5\u8be2\u64cd\u4f5c\u3002<\/li>\n<\/ol>\n
          CREATE INDEX idx_course_id ON students(course_id);<\/pre>\n
          \u603b\u7ed3\uff1a
          \u5916\u952e\u5728MySQL\u6570\u636e\u5e93\u4e2d\u626e\u6f14\u7740\u91cd\u8981\u7684\u89d2\u8272\uff0c\u901a\u8fc7\u5408\u7406\u7684\u8bbe\u8ba1\u548c\u4f7f\u7528\u5916\u952e\uff0c\u53ef\u4ee5\u63d0\u9ad8\u6570\u636e\u5e93\u7684\u6570\u636e\u5b8c\u6574\u6027\u3001\u4e00\u81f4\u6027\u4ee5\u53ca\u64cd\u4f5c\u5b89\u5168\u6027\uff0c\u4e3a\u6570\u636e\u5e93\u7ba1\u7406\u548c\u5e94\u7528\u4f18\u5316\u63d0\u4f9b\u4e86\u91cd\u8981\u7684\u652f\u6301\u3002\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\uff0c\u5408\u7406\u5229\u7528\u5916\u952e\u53ef\u4ee5\u63d0\u9ad8\u6570\u636e\u5e93\u7684\u6027\u80fd\u548c\u53ef\u7ef4\u62a4\u6027\uff0c\u503c\u5f97\u5f00\u53d1\u8005\u91cd\u89c6\u548c\u5e94\u7528\u3002<\/p>\n
          \u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300aMySQL\u6570\u636e\u5e93\u4e2d\u5916\u952e\u7684\u91cd\u8981\u6027\u548c\u5e94\u7528\u5b9e\u8df5\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\u5427\uff01<\/p>\n
          \n
          \n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
          MySQL\u6570\u636e\u5e93\u4e2d\u5916\u952e\u7684\u91cd\u8981\u6027\u548c...<\/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-200046","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200046","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=200046"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200046\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200046"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200046"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200046"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}