{"id":173227,"date":"2024-11-07T16:14:18","date_gmt":"2024-11-07T08:14:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/173227\/"},"modified":"2024-11-07T16:14:18","modified_gmt":"2024-11-07T08:14:18","slug":"%e5%a6%82%e4%bd%95%e5%89%b5%e5%bb%ba%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%8f%83%e7%85%a7%e9%97%9c%e4%bf%82%ef%bc%9f-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%89%b5%e5%bb%ba%e5%8f%83%e7%85%a7%e9%97%9c%e4%bf%82","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/173227\/","title":{"rendered":"\u5982\u4f55\u5275\u5efa\u6578\u64da\u5eab\u7684\u53c3\u7167\u95dc\u4fc2\uff1f (\u6578\u64da\u5eab\u5275\u5efa\u53c3\u7167\u95dc\u4fc2)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e5%89%b5%e5%bb%ba%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%8f%83%e7%85%a7%e9%97%9c%e4%bf%82%ef%bc%9f-%e6%95%b8%e6%93%9a%e5%ba%ab%e5%89%b5%e5%bb%ba%e5%8f%83%e7%85%a7%e9%97%9c%e4%bf%82-TBPGDoItCw\">\u5982\u4f55\u5275\u5efa\u6578\u64da\u5eab\u7684\u53c3\u7167\u95dc\u4fc2\uff1f (\u6578\u64da\u5eab\u5275\u5efa\u53c3\u7167\u95dc\u4fc2)<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u53c3\u7167\u95dc\u4fc2\u662f\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u7684\u91cd\u8981\u6a5f\u5236\u3002\u53c3\u7167\u95dc\u4fc2\u901a\u5e38\u662f\u901a\u904e\u5916\u9375\u4f86\u5be6\u73fe\u7684\uff0c\u5916\u9375\u662f\u4e00\u7a2e\u7d04\u675f\uff0c\u7528\u65bc\u5728\u5169\u500b\u8868\u4e4b\u9593\u5efa\u7acb\u806f\u7e6b\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5275\u5efa\u6578\u64da\u5eab\u7684\u53c3\u7167\u95dc\u4fc2\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%8f%83%e7%85%a7%e9%97%9c%e4%bf%82%ef%bc%9f-TBPGDoItCw\">\u4ec0\u9ebc\u662f\u53c3\u7167\u95dc\u4fc2\uff1f<\/h2>\n<p>\u53c3\u7167\u95dc\u4fc2\u662f\u6307\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u67d0\u4e00\u8868\u7684\u5b57\u6bb5\uff08\u5916\u9375\uff09\u5f15\u7528\u53e6\u4e00\u8868\u7684\u4e3b\u9375\u3002\u9019\u7a2e\u95dc\u4fc2\u4f7f\u5f97\u6578\u64da\u4e4b\u9593\u53ef\u4ee5\u5efa\u7acb\u908f\u8f2f\u806f\u7e6b\uff0c\u5f9e\u800c\u4fdd\u8b49\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002\u4f8b\u5982\uff0c\u5047\u8a2d\u6709\u4e00\u500b\u201c\u5b78\u751f\u201d\u8868\u548c\u4e00\u500b\u201c\u8ab2\u7a0b\u201d\u8868\uff0c\u5b78\u751f\u8868\u4e2d\u7684\u201c\u8ab2\u7a0bID\u201d\u53ef\u4ee5\u4f5c\u70ba\u5916\u9375\uff0c\u5f15\u7528\u8ab2\u7a0b\u8868\u4e2d\u7684\u201c\u8ab2\u7a0bID\u201d\u4e3b\u9375\u3002<\/p>\n<h2 id=\"%e5%89%b5%e5%bb%ba%e5%8f%83%e7%85%a7%e9%97%9c%e4%bf%82%e7%9a%84%e6%ad%a5%e9%a9%9f-TBPGDoItCw\">\u5275\u5efa\u53c3\u7167\u95dc\u4fc2\u7684\u6b65\u9a5f<\/h2>\n<h3 id=\"1-%e8%a8%ad%e8%a8%88%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b5%90%e6%a7%8b-TBPGDoItCw\">1. \u8a2d\u8a08\u6578\u64da\u5eab\u7d50\u69cb<\/h3>\n<p>\u5728\u5275\u5efa\u53c3\u7167\u95dc\u4fc2\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u8a2d\u8a08\u6578\u64da\u5eab\u7684\u7d50\u69cb\u3002\u9019\u5305\u62ec\u78ba\u5b9a\u6bcf\u500b\u8868\u7684\u5b57\u6bb5\u53ca\u5176\u6578\u64da\u985e\u578b\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>CREATE TABLE \u5b78\u751f (\n    \u5b78\u751fID INT PRIMARY KEY,\n    \u59d3\u540d VARCHAR(100),\n    \u8ab2\u7a0bID INT\n);\n\nCREATE TABLE \u8ab2\u7a0b (\n    \u8ab2\u7a0bID INT PRIMARY KEY,\n    \u8ab2\u7a0b\u540d\u7a31 VARCHAR(100)\n);\n<\/code><\/pre>\n<h3 id=\"2-%e6%b7%bb%e5%8a%a0%e5%a4%96%e9%8d%b5%e7%b4%84%e6%9d%9f-TBPGDoItCw\">2. \u6dfb\u52a0\u5916\u9375\u7d04\u675f<\/h3>\n<p>\u5728\u5275\u5efa\u8868\u6642\uff0c\u53ef\u4ee5\u76f4\u63a5\u5728\u8868\u5b9a\u7fa9\u4e2d\u6dfb\u52a0\u5916\u9375\u7d04\u675f\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u5728\u5b78\u751f\u8868\u4e2d\u63d2\u5165\u7684\u8ab2\u7a0bID\u5fc5\u9808\u5b58\u5728\u65bc\u8ab2\u7a0b\u8868\u4e2d\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u6dfb\u52a0\u5916\u9375\u7d04\u675f\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE TABLE \u5b78\u751f (\n    \u5b78\u751fID INT PRIMARY KEY,\n    \u59d3\u540d VARCHAR(100),\n    \u8ab2\u7a0bID INT,\n    FOREIGN KEY (\u8ab2\u7a0bID) REFERENCES \u8ab2\u7a0b(\u8ab2\u7a0bID)\n);\n<\/code><\/pre>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8alter-table%e6%b7%bb%e5%8a%a0%e5%a4%96%e9%8d%b5-TBPGDoItCw\">3. \u4f7f\u7528ALTER TABLE\u6dfb\u52a0\u5916\u9375<\/h3>\n<p>\u5982\u679c\u8868\u5df2\u7d93\u5b58\u5728\uff0c\u60a8\u4e5f\u53ef\u4ee5\u4f7f\u7528ALTER TABLE\u8a9e\u53e5\u4f86\u6dfb\u52a0\u5916\u9375\u7d04\u675f\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>ALTER TABLE \u5b78\u751f\nADD CONSTRAINT fk_\u8ab2\u7a0b\nFOREIGN KEY (\u8ab2\u7a0bID) REFERENCES \u8ab2\u7a0b(\u8ab2\u7a0bID);\n<\/code><\/pre>\n<h2 id=\"%e5%8f%83%e7%85%a7%e9%97%9c%e4%bf%82%e7%9a%84%e5%a5%bd%e8%99%95-TBPGDoItCw\">\u53c3\u7167\u95dc\u4fc2\u7684\u597d\u8655<\/h2>\n<ul>\n<li><strong>\u6578\u64da\u5b8c\u6574\u6027\uff1a<\/strong>\u53c3\u7167\u95dc\u4fc2\u53ef\u4ee5\u9632\u6b62\u63d2\u5165\u4e0d\u4e00\u81f4\u7684\u6578\u64da\u3002\u4f8b\u5982\uff0c\u7121\u6cd5\u5728\u5b78\u751f\u8868\u4e2d\u63d2\u5165\u4e00\u500b\u4e0d\u5b58\u5728\u7684\u8ab2\u7a0bID\u3002<\/li>\n<li><strong>\u6578\u64da\u95dc\u806f\u6027\uff1a<\/strong>\u901a\u904e\u53c3\u7167\u95dc\u4fc2\uff0c\u53ef\u4ee5\u8f15\u9b06\u5730\u67e5\u8a62\u76f8\u95dc\u6578\u64da\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u901a\u904eJOIN\u64cd\u4f5c\u4f86\u7372\u53d6\u5b78\u751f\u53ca\u5176\u6240\u9078\u8ab2\u7a0b\u7684\u8a73\u7d30\u4fe1\u606f\u3002<\/li>\n<li><strong>\u7c21\u5316\u6578\u64da\u7ba1\u7406\uff1a<\/strong>\u53c3\u7167\u95dc\u4fc2\u4f7f\u5f97\u6578\u64da\u7684\u66f4\u65b0\u548c\u522a\u9664\u64cd\u4f5c\u66f4\u52a0\u5b89\u5168\uff0c\u56e0\u70ba\u7cfb\u7d71\u6703\u81ea\u52d5\u6aa2\u67e5\u7d04\u675f\u689d\u4ef6\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-TBPGDoItCw\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u5275\u5efa\u53c3\u7167\u95dc\u4fc2\u6642\uff0c\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u5916\u9375\u5b57\u6bb5\u7684\u6578\u64da\u985e\u578b\u8207\u4e3b\u9375\u5b57\u6bb5\u76f8\u540c\u3002<\/li>\n<li>\u5728\u522a\u9664\u6216\u66f4\u65b0\u4e3b\u8868\u4e2d\u7684\u6578\u64da\u6642\uff0c\u8003\u616e\u4f7f\u7528ON DELETE CASCADE\u6216ON UPDATE CASCADE\u7b49\u9078\u9805\uff0c\u4ee5\u4fbf\u81ea\u52d5\u8655\u7406\u76f8\u95dc\u7684\u5916\u9375\u8a18\u9304\u3002<\/li>\n<li>\u5728\u8a2d\u8a08\u6578\u64da\u5eab\u6642\uff0c\u61c9\u8a72\u5408\u7406\u898f\u5283\u8868\u4e4b\u9593\u7684\u95dc\u4fc2\uff0c\u907f\u514d\u904e\u591a\u7684\u53c3\u7167\u95dc\u4fc2\u5c0e\u81f4\u6027\u80fd\u554f\u984c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-TBPGDoItCw\">\u7e3d\u7d50<\/h2>\n<p>\u5275\u5efa\u6578\u64da\u5eab\u7684\u53c3\u7167\u95dc\u4fc2\u662f\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u7684\u95dc\u9375\u6b65\u9a5f\u3002\u901a\u904e\u5408\u7406\u8a2d\u8a08\u8868\u7d50\u69cb\u548c\u4f7f\u7528\u5916\u9375\u7d04\u675f\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u4e4b\u9593\u7684\u95dc\u806f\u6027\u3002\u7121\u8ad6\u662f\u5728\u5b78\u6821\u7ba1\u7406\u7cfb\u7d71\u9084\u662f\u5176\u4ed6\u61c9\u7528\u4e2d\uff0c\u53c3\u7167\u95dc\u4fc2\u90fd\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u7dad\u8b77\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u53ef\u9760\u6027\u3002\u5982\u679c\u60a8\u9700\u8981\u66f4\u591a\u6709\u95dc\u6578\u64da\u5eab\u7ba1\u7406\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9 <a href=\"https:\/\/server.hk\">Server.HK<\/a>\uff0c\u4e86\u89e3\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u53ca\u5176\u4ed6\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u5275\u5efa\u53c3\u7167\u95dc\u4fc2\uff0c\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\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-173227","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173227","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=173227"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173227\/revisions"}],"predecessor-version":[{"id":173228,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/173227\/revisions\/173228"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=173227"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=173227"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=173227"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}