{"id":164753,"date":"2024-11-05T10:02:23","date_gmt":"2024-11-05T02:02:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/164753\/"},"modified":"2024-11-05T10:02:24","modified_gmt":"2024-11-05T02:02:24","slug":"%e9%96%8b%e7%99%bc%e4%b8%ad%e7%9a%84mysql%e5%8f%83%e7%85%a7%e5%ae%8c%e6%95%b4%e6%80%a7%e7%b0%a1%e4%bb%8b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/164753\/","title":{"rendered":"\u958b\u767c\u4e2d\u7684MySQL\u53c3\u7167\u5b8c\u6574\u6027\u7c21\u4ecb"},"content":{"rendered":"<h1 id=\"%e9%96%8b%e7%99%bc%e4%b8%ad%e7%9a%84mysql%e5%8f%83%e7%85%a7%e5%ae%8c%e6%95%b4%e6%80%a7%e7%b0%a1%e4%bb%8b-hRwiHePBoY\">\u958b\u767c\u4e2d\u7684MySQL\u53c3\u7167\u5b8c\u6574\u6027\u7c21\u4ecb<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u53c3\u7167\u5b8c\u6574\u6027\u662f\u78ba\u4fdd\u8cc7\u6599\u4e00\u81f4\u6027\u548c\u6e96\u78ba\u6027\u7684\u91cd\u8981\u6a5f\u5236\u3002MySQL\u4f5c\u70ba\u4e00\u500b\u6d41\u884c\u7684\u958b\u6e90\u8cc7\u6599\u5eab\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u5de5\u5177\u4f86\u5be6\u73fe\u53c3\u7167\u5b8c\u6574\u6027\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eMySQL\u4e2d\u7684\u53c3\u7167\u5b8c\u6574\u6027\uff0c\u5305\u62ec\u5176\u6982\u5ff5\u3001\u5be6\u73fe\u65b9\u5f0f\u53ca\u5176\u5728\u958b\u767c\u4e2d\u7684\u61c9\u7528\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%8f%83%e7%85%a7%e5%ae%8c%e6%95%b4%e6%80%a7%ef%bc%9f-hRwiHePBoY\">\u4ec0\u9ebc\u662f\u53c3\u7167\u5b8c\u6574\u6027\uff1f<\/h2>\n<p>\u53c3\u7167\u5b8c\u6574\u6027\u662f\u6307\u8cc7\u6599\u5eab\u4e2d\u8cc7\u6599\u4e4b\u9593\u7684\u95dc\u806f\u6027\u5fc5\u9808\u4fdd\u6301\u4e00\u81f4\u3002\u9019\u610f\u5473\u8457\uff0c\u5982\u679c\u4e00\u500b\u8cc7\u6599\u8868\u4e2d\u7684\u67d0\u500b\u6b04\u4f4d\u5f15\u7528\u4e86\u53e6\u4e00\u500b\u8cc7\u6599\u8868\u7684\u6b04\u4f4d\uff0c\u90a3\u9ebc\u9019\u500b\u5f15\u7528\u5fc5\u9808\u662f\u6709\u6548\u7684\u3002\u8209\u4f8b\u4f86\u8aaa\uff0c\u5047\u8a2d\u6709\u4e00\u500b\u300c\u8a02\u55ae\u300d\u8cc7\u6599\u8868\u548c\u4e00\u500b\u300c\u5ba2\u6236\u300d\u8cc7\u6599\u8868\uff0c\u8a02\u55ae\u8cc7\u6599\u8868\u4e2d\u7684\u300c\u5ba2\u6236ID\u300d\u6b04\u4f4d\u61c9\u8a72\u5c0d\u61c9\u5230\u5ba2\u6236\u8cc7\u6599\u8868\u4e2d\u7684\u300cID\u300d\u6b04\u4f4d\u3002\u5982\u679c\u5ba2\u6236\u8cc7\u6599\u8868\u4e2d\u4e0d\u5b58\u5728\u67d0\u500b\u5ba2\u6236ID\uff0c\u5247\u8a02\u55ae\u8cc7\u6599\u8868\u4e2d\u7684\u8a72\u8a18\u9304\u5c31\u6703\u9055\u53cd\u53c3\u7167\u5b8c\u6574\u6027\u3002<\/p>\n<h2 id=\"mysql%e4%b8%ad%e7%9a%84%e5%8f%83%e7%85%a7%e5%ae%8c%e6%95%b4%e6%80%a7%e5%af%a6%e7%8f%be-hRwiHePBoY\">MySQL\u4e2d\u7684\u53c3\u7167\u5b8c\u6574\u6027\u5be6\u73fe<\/h2>\n<p>\u5728MySQL\u4e2d\uff0c\u53c3\u7167\u5b8c\u6574\u6027\u4e3b\u8981\u901a\u904e\u5916\u9375\u7d04\u675f\u4f86\u5be6\u73fe\u3002\u5916\u9375\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u7d04\u675f\uff0c\u7528\u65bc\u5efa\u7acb\u548c\u5f37\u5236\u57f7\u884c\u5169\u500b\u8cc7\u6599\u8868\u4e4b\u9593\u7684\u95dc\u806f\u3002\u7576\u4e00\u500b\u8cc7\u6599\u8868\u7684\u6b04\u4f4d\u88ab\u5b9a\u7fa9\u70ba\u5916\u9375\u6642\uff0cMySQL\u6703\u81ea\u52d5\u6aa2\u67e5\u8a72\u6b04\u4f4d\u7684\u503c\u662f\u5426\u5b58\u5728\u65bc\u88ab\u5f15\u7528\u7684\u8cc7\u6599\u8868\u4e2d\u3002<\/p>\n<h3 id=\"%e5%a4%96%e9%8d%b5%e7%9a%84%e5%ae%9a%e7%be%a9-hRwiHePBoY\">\u5916\u9375\u7684\u5b9a\u7fa9<\/h3>\n<p>\u5728MySQL\u4e2d\uff0c\u53ef\u4ee5\u5728\u5275\u5efa\u6216\u4fee\u6539\u8cc7\u6599\u8868\u6642\u5b9a\u7fa9\u5916\u9375\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u7bc4\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5728\u5275\u5efa\u8cc7\u6599\u8868\u6642\u5b9a\u7fa9\u5916\u9375\uff1a<\/p>\n<pre><code>CREATE TABLE \u5ba2\u6236 (\n    ID INT PRIMARY KEY,\n    \u540d\u7a31 VARCHAR(100) NOT NULL\n);\n\nCREATE TABLE \u8a02\u55ae (\n    \u8a02\u55aeID INT PRIMARY KEY,\n    \u5ba2\u6236ID INT,\n    FOREIGN KEY (\u5ba2\u6236ID) REFERENCES \u5ba2\u6236(ID)\n);<\/code><\/pre>\n<p>\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u300c\u8a02\u55ae\u300d\u8cc7\u6599\u8868\u4e2d\u7684\u300c\u5ba2\u6236ID\u300d\u6b04\u4f4d\u88ab\u5b9a\u7fa9\u70ba\u5916\u9375\uff0c\u5f15\u7528\u4e86\u300c\u5ba2\u6236\u300d\u8cc7\u6599\u8868\u4e2d\u7684\u300cID\u300d\u6b04\u4f4d\u3002\u9019\u6a23\u4e00\u4f86\uff0c\u7576\u6211\u5011\u5617\u8a66\u5728\u300c\u8a02\u55ae\u300d\u8cc7\u6599\u8868\u4e2d\u63d2\u5165\u4e00\u500b\u4e0d\u5b58\u5728\u7684\u5ba2\u6236ID\u6642\uff0cMySQL\u5c07\u6703\u62d2\u7d55\u9019\u500b\u64cd\u4f5c\uff0c\u5f9e\u800c\u4fdd\u6301\u53c3\u7167\u5b8c\u6574\u6027\u3002<\/p>\n<h3 id=\"%e5%a4%96%e9%8d%b5%e7%b4%84%e6%9d%9f%e7%9a%84%e8%a1%8c%e7%82%ba-hRwiHePBoY\">\u5916\u9375\u7d04\u675f\u7684\u884c\u70ba<\/h3>\n<p>MySQL\u63d0\u4f9b\u4e86\u5e7e\u7a2e\u9078\u9805\u4f86\u5b9a\u7fa9\u5916\u9375\u7d04\u675f\u7684\u884c\u70ba\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>CASCADE<\/strong>\uff1a\u7576\u88ab\u5f15\u7528\u7684\u8a18\u9304\u88ab\u522a\u9664\u6216\u66f4\u65b0\u6642\uff0c\u81ea\u52d5\u522a\u9664\u6216\u66f4\u65b0\u6240\u6709\u76f8\u95dc\u7684\u8a18\u9304\u3002<\/li>\n<li><strong>SET NULL<\/strong>\uff1a\u7576\u88ab\u5f15\u7528\u7684\u8a18\u9304\u88ab\u522a\u9664\u6216\u66f4\u65b0\u6642\uff0c\u5c07\u76f8\u95dc\u8a18\u9304\u7684\u5916\u9375\u6b04\u4f4d\u8a2d\u7f6e\u70baNULL\u3002<\/li>\n<li><strong>NO ACTION<\/strong>\uff1a\u5982\u679c\u6709\u76f8\u95dc\u7684\u8a18\u9304\u5b58\u5728\uff0c\u5247\u4e0d\u5141\u8a31\u522a\u9664\u6216\u66f4\u65b0\u88ab\u5f15\u7528\u7684\u8a18\u9304\u3002<\/li>\n<li><strong>RESTRICT<\/strong>\uff1a\u8207NO ACTION\u985e\u4f3c\uff0c\u4f46\u5728\u6aa2\u67e5\u6642\u7acb\u5373\u5831\u932f\uff0c\u800c\u4e0d\u662f\u5728\u4e8b\u52d9\u63d0\u4ea4\u6642\u3002<\/li>\n<\/ul>\n<p>\u9019\u4e9b\u9078\u9805\u4f7f\u5f97\u958b\u767c\u8005\u53ef\u4ee5\u6839\u64da\u5177\u9ad4\u9700\u6c42\u4f86\u8a2d\u8a08\u8cc7\u6599\u5eab\u7684\u884c\u70ba\uff0c\u5f9e\u800c\u66f4\u597d\u5730\u7dad\u8b77\u8cc7\u6599\u7684\u4e00\u81f4\u6027\u3002<\/p>\n<h2 id=\"%e5%8f%83%e7%85%a7%e5%ae%8c%e6%95%b4%e6%80%a7%e7%9a%84%e6%87%89%e7%94%a8-hRwiHePBoY\">\u53c3\u7167\u5b8c\u6574\u6027\u7684\u61c9\u7528<\/h2>\n<p>\u5728\u5be6\u969b\u958b\u767c\u4e2d\uff0c\u53c3\u7167\u5b8c\u6574\u6027\u5c0d\u65bc\u7dad\u8b77\u8cc7\u6599\u7684\u6e96\u78ba\u6027\u81f3\u95dc\u91cd\u8981\u3002\u5b83\u4e0d\u50c5\u80fd\u9632\u6b62\u8cc7\u6599\u932f\u8aa4\uff0c\u9084\u80fd\u63d0\u9ad8\u8cc7\u6599\u5eab\u7684\u53ef\u7dad\u8b77\u6027\u548c\u53ef\u64f4\u5c55\u6027\u3002\u4f8b\u5982\uff0c\u5728\u4e00\u500b\u96fb\u5b50\u5546\u52d9\u7cfb\u7d71\u4e2d\uff0c\u78ba\u4fdd\u8a02\u55ae\u8207\u5ba2\u6236\u4e4b\u9593\u7684\u95dc\u806f\u6b63\u78ba\uff0c\u53ef\u4ee5\u907f\u514d\u51fa\u73fe\u7121\u6548\u8a02\u55ae\u6216\u932f\u8aa4\u7684\u5ba2\u6236\u8cc7\u6599\u3002<\/p>\n<p>\u6b64\u5916\uff0c\u53c3\u7167\u5b8c\u6574\u6027\u9084\u80fd\u5e6b\u52a9\u958b\u767c\u8005\u5728\u9032\u884c\u8cc7\u6599\u5eab\u8a2d\u8a08\u6642\uff0c\u6e05\u6670\u5730\u5b9a\u7fa9\u8cc7\u6599\u4e4b\u9593\u7684\u95dc\u806f\uff0c\u5f9e\u800c\u63d0\u9ad8\u7cfb\u7d71\u7684\u6574\u9ad4\u67b6\u69cb\u8cea\u91cf\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-hRwiHePBoY\">\u7e3d\u7d50<\/h2>\n<p>\u53c3\u7167\u5b8c\u6574\u6027\u662f\u8cc7\u6599\u5eab\u8a2d\u8a08\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\uff0c\u7279\u5225\u662f\u5728\u4f7f\u7528MySQL\u9019\u6a23\u7684\u8cc7\u6599\u5eab\u7cfb\u7d71\u6642\u3002\u901a\u904e\u5916\u9375\u7d04\u675f\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u7dad\u8b77\u8cc7\u6599\u7684\u4e00\u81f4\u6027\u548c\u6e96\u78ba\u6027\uff0c\u5f9e\u800c\u63d0\u9ad8\u7cfb\u7d71\u7684\u53ef\u9760\u6027\u3002\u5728\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u6642\uff0c\u4e86\u89e3\u8cc7\u6599\u5eab\u7684\u8a2d\u8a08\u539f\u5247\u548c\u53c3\u7167\u5b8c\u6574\u6027\u7684\u91cd\u8981\u6027\u5c07\u6709\u52a9\u65bc\u69cb\u5efa\u66f4\u7a69\u5b9a\u7684\u61c9\u7528\u7a0b\u5f0f\u3002\u7121\u8ad6\u662f\u9078\u64c7 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a>\uff0c\u78ba\u4fdd\u8cc7\u6599\u5eab\u7684\u5b8c\u6574\u6027\u90fd\u662f\u6210\u529f\u7684\u95dc\u9375\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u958b\u767c\u4e2d\u7684MySQL\u53c3\u7167\u5b8c\u6574\u6027\uff0c\u63a2\u7d22\u5176\u529f\u80fd\u3001\u512a\u52e2\u53ca\u5982\u4f55\u6709\u6548\u7ba1\u7406\u6578\u64da\u95dc\u806f\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-164753","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/164753","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=164753"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/164753\/revisions"}],"predecessor-version":[{"id":164754,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/164753\/revisions\/164754"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=164753"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=164753"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=164753"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}