{"id":79546,"date":"2024-10-16T13:12:16","date_gmt":"2024-10-16T05:12:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/79546\/"},"modified":"2024-10-16T13:12:16","modified_gmt":"2024-10-16T05:12:16","slug":"mysql%e6%8c%87%e4%bb%a4-references%ef%bc%88%e5%bc%95%e7%94%a8%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/79546\/","title":{"rendered":"MySQL\u6307\u4ee4: REFERENCES\uff08\u5f15\u7528\uff09"},"content":{"rendered":"<h1 id=\"mysql%e6%8c%87%e4%bb%a4-references%ef%bc%88%e5%bc%95%e7%94%a8%ef%bc%89-gzYNfwxFhU\">MySQL\u6307\u4ee4: REFERENCES\uff08\u5f15\u7528\uff09<\/h1>\n<p>\u5728\u95dc\u806f\u5f0f\u8cc7\u6599\u5eab\u4e2d\uff0c\u8cc7\u6599\u8868\u4e4b\u9593\u7684\u95dc\u806f\u6027\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002MySQL\u4f5c\u70ba\u4e00\u500b\u6d41\u884c\u7684\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u5f0f\u4f86\u5b9a\u7fa9\u9019\u4e9b\u95dc\u806f\u6027\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u4f7f\u7528<strong>REFERENCES<\/strong>\u6307\u4ee4\u3002\u9019\u7bc7\u6587\u7ae0\u5c07\u6df1\u5165\u63a2\u8a0eMySQL\u4e2d\u7684REFERENCES\u6307\u4ee4\uff0c\u5305\u62ec\u5176\u8a9e\u6cd5\u3001\u7528\u9014\u53ca\u7bc4\u4f8b\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afreferences%e6%8c%87%e4%bb%a4%ef%bc%9f-gzYNfwxFhU\">\u4ec0\u9ebc\u662fREFERENCES\u6307\u4ee4\uff1f<\/h2>\n<p>\u5728MySQL\u4e2d\uff0c<strong>REFERENCES<\/strong>\u6307\u4ee4\u7528\u65bc\u5b9a\u7fa9\u5916\u9375\uff08Foreign Key\uff09\uff0c\u9019\u662f\u4e00\u7a2e\u7d04\u675f\u689d\u4ef6\uff0c\u7528\u4f86\u5efa\u7acb\u5169\u500b\u8cc7\u6599\u8868\u4e4b\u9593\u7684\u95dc\u806f\u3002\u5916\u9375\u7684\u4e3b\u8981\u529f\u80fd\u662f\u78ba\u4fdd\u8cc7\u6599\u7684\u5b8c\u6574\u6027\uff0c\u9632\u6b62\u5728\u4e3b\u8868\u4e2d\u4e0d\u5b58\u5728\u7684\u8cc7\u6599\u88ab\u63d2\u5165\u5230\u5b50\u8868\u4e2d\u3002<\/p>\n<h2 id=\"references%e7%9a%84%e8%aa%9e%e6%b3%95-gzYNfwxFhU\">REFERENCES\u7684\u8a9e\u6cd5<\/h2>\n<p>\u4f7f\u7528REFERENCES\u6307\u4ee4\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>CREATE TABLE \u5b50\u8868 (\n    \u6b04\u4f4d1 \u8cc7\u6599\u578b\u5225,\n    \u6b04\u4f4d2 \u8cc7\u6599\u578b\u5225,\n    ...\n    FOREIGN KEY (\u5b50\u8868\u6b04\u4f4d) REFERENCES \u4e3b\u8868(\u4e3b\u8868\u6b04\u4f4d)\n);<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<strong>\u5b50\u8868<\/strong>\u662f\u6307\u5305\u542b\u5916\u9375\u7684\u8cc7\u6599\u8868\uff0c\u800c<strong>\u4e3b\u8868<\/strong>\u5247\u662f\u88ab\u5f15\u7528\u7684\u8cc7\u6599\u8868\u3002\u5916\u9375\u6b04\u4f4d\u5fc5\u9808\u8207\u4e3b\u8868\u4e2d\u7684\u4e3b\u9375\u6216\u552f\u4e00\u9375\u76f8\u5c0d\u61c9\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e7%af%84%e4%be%8b-gzYNfwxFhU\">\u4f7f\u7528\u7bc4\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u7bc4\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528REFERENCES\u6307\u4ee4\u4f86\u5efa\u7acb\u5169\u500b\u8cc7\u6599\u8868\u4e4b\u9593\u7684\u95dc\u806f\u3002<\/p>\n<pre><code>CREATE TABLE customers (\n    customer_id INT AUTO_INCREMENT,\n    name VARCHAR(100),\n    PRIMARY KEY (customer_id)\n);\n\nCREATE TABLE orders (\n    order_id INT AUTO_INCREMENT,\n    order_date DATE,\n    customer_id INT,\n    PRIMARY KEY (order_id),\n    FOREIGN KEY (customer_id) REFERENCES customers(customer_id)\n);<\/code><\/pre>\n<p>\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u9996\u5148\u5275\u5efa\u4e86\u4e00\u500b\u540d\u70ba<strong>customers<\/strong>\u7684\u8cc7\u6599\u8868\uff0c\u4e26\u5b9a\u7fa9\u4e86<strong>customer_id<\/strong>\u4f5c\u70ba\u4e3b\u9375\u3002\u63a5\u8457\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u540d\u70ba<strong>orders<\/strong>\u7684\u8cc7\u6599\u8868\uff0c\u4e26\u5728\u5176\u4e2d\u5b9a\u7fa9\u4e86<strong>customer_id<\/strong>\u4f5c\u70ba\u5916\u9375\uff0c\u5f15\u7528\u4e86<strong>customers<\/strong>\u8cc7\u6599\u8868\u4e2d\u7684<strong>customer_id<\/strong>\u3002<\/p>\n<h2 id=\"references%e7%9a%84%e7%94%a8%e9%80%94-gzYNfwxFhU\">REFERENCES\u7684\u7528\u9014<\/h2>\n<p>\u4f7f\u7528REFERENCES\u6307\u4ee4\u7684\u4e3b\u8981\u7528\u9014\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u8cc7\u6599\u5b8c\u6574\u6027\uff1a<\/strong>\u78ba\u4fdd\u5b50\u8868\u4e2d\u7684\u8cc7\u6599\u5fc5\u9808\u5b58\u5728\u65bc\u4e3b\u8868\u4e2d\uff0c\u5f9e\u800c\u907f\u514d\u5b64\u7acb\u7684\u8cc7\u6599\u3002<\/li>\n<li><strong>\u81ea\u52d5\u522a\u9664\u6216\u66f4\u65b0\uff1a<\/strong>\u53ef\u4ee5\u8a2d\u7f6e\u5916\u9375\u7d04\u675f\uff0c\u4f7f\u5f97\u7576\u4e3b\u8868\u4e2d\u7684\u8cc7\u6599\u88ab\u522a\u9664\u6216\u66f4\u65b0\u6642\uff0c\u5b50\u8868\u4e2d\u7684\u76f8\u95dc\u8cc7\u6599\u4e5f\u6703\u81ea\u52d5\u66f4\u65b0\u6216\u522a\u9664\u3002<\/li>\n<li><strong>\u8cc7\u6599\u95dc\u806f\u6027\uff1a<\/strong>\u5e6b\u52a9\u958b\u767c\u8005\u7406\u89e3\u8cc7\u6599\u4e4b\u9593\u7684\u95dc\u806f\uff0c\u5f9e\u800c\u66f4\u597d\u5730\u8a2d\u8a08\u8cc7\u6599\u5eab\u7d50\u69cb\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-gzYNfwxFhU\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528REFERENCES\u6307\u4ee4\u6642\uff0c\u6709\u5e7e\u9ede\u9700\u8981\u6ce8\u610f\uff1a<\/p>\n<ul>\n<li>\u5916\u9375\u6b04\u4f4d\u7684\u8cc7\u6599\u578b\u5225\u5fc5\u9808\u8207\u4e3b\u9375\u6b04\u4f4d\u7684\u8cc7\u6599\u578b\u5225\u76f8\u540c\u3002<\/li>\n<li>\u5728\u5275\u5efa\u5916\u9375\u7d04\u675f\u4e4b\u524d\uff0c\u4e3b\u8868\u5fc5\u9808\u5df2\u7d93\u5b58\u5728\u3002<\/li>\n<li>\u5982\u679c\u4e3b\u8868\u4e2d\u7684\u8cc7\u6599\u88ab\u522a\u9664\uff0c\u6839\u64da\u8a2d\u7f6e\u7684\u7d04\u675f\uff0c\u5b50\u8868\u4e2d\u7684\u8cc7\u6599\u53ef\u80fd\u6703\u53d7\u5230\u5f71\u97ff\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-gzYNfwxFhU\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u4e2d\u7684<strong>REFERENCES<\/strong>\u6307\u4ee4\u662f\u5efa\u7acb\u8cc7\u6599\u8868\u4e4b\u9593\u95dc\u806f\u7684\u91cd\u8981\u5de5\u5177\uff0c\u80fd\u5920\u6709\u6548\u5730\u7dad\u8b77\u8cc7\u6599\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002\u900f\u904e\u6b63\u78ba\u4f7f\u7528\u5916\u9375\u7d04\u675f\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8a2d\u8a08\u51fa\u66f4\u70ba\u5065\u5168\u7684\u8cc7\u6599\u5eab\u7d50\u69cb\uff0c\u5f9e\u800c\u63d0\u5347\u61c9\u7528\u7a0b\u5f0f\u7684\u7a69\u5b9a\u6027\u548c\u53ef\u9760\u6027\u3002\u5982\u679c\u60a8\u5c0d\u65bc\u8cc7\u6599\u5eab\u7ba1\u7406\u6709\u9032\u4e00\u6b65\u7684\u9700\u6c42\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u642d\u5efa\u60a8\u7684\u8cc7\u6599\u5eab\u74b0\u5883\uff0c\u4eab\u53d7\u66f4\u9ad8\u6548\u7684\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3MySQL\u4e2d\u7684REFERENCES\u6307\u4ee4\uff0c\u638c\u63e1\u5982\u4f55\u5728\u6570\u636e\u5e93\u4e2d\u521b\u5efa\u5916\u952e\u7ea6\u675f\u4ee5\u7ef4\u62a4\u6570\u636e\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-79546","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/79546","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=79546"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/79546\/revisions"}],"predecessor-version":[{"id":79547,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/79546\/revisions\/79547"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=79546"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=79546"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=79546"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}