{"id":187728,"date":"2024-11-11T16:41:20","date_gmt":"2024-11-11T08:41:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/187728\/"},"modified":"2024-11-11T16:41:21","modified_gmt":"2024-11-11T08:41:21","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e6%8a%bd%e8%b1%a1%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e7%b0%a1%e4%bb%8b-%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e6%8a%bd%e8%b1%a1%e6%95%b8%e6%93%9a%e9%a1%9e","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/187728\/","title":{"rendered":"\u6578\u64da\u5eab\u4e2d\u7684\u62bd\u8c61\u6578\u64da\u985e\u578b\u7c21\u4ecb (\u6578\u64da\u5eab\u4e2d\u62bd\u8c61\u6578\u64da\u985e\u578b\u7684\u5b9a\u7fa9)"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e6%8a%bd%e8%b1%a1%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e7%b0%a1%e4%bb%8b-uGcxMAJoUC\">\u6578\u64da\u5eab\u4e2d\u7684\u62bd\u8c61\u6578\u64da\u985e\u578b\u7c21\u4ecb<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u8a2d\u8a08\u548c\u7ba1\u7406\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002\u62bd\u8c61\u6578\u64da\u985e\u578b\uff08Abstract Data Types, ADT\uff09\u662f\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\u7684\u4e00\u500b\u95dc\u9375\u6982\u5ff5\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u6709\u6548\u5730\u7d44\u7e54\u548c\u64cd\u4f5c\u6578\u64da\u3002\u672c\u6587\u5c07\u5c0d\u6578\u64da\u5eab\u4e2d\u7684\u62bd\u8c61\u6578\u64da\u985e\u578b\u9032\u884c\u7c21\u8981\u4ecb\u7d39\uff0c\u4e26\u63a2\u8a0e\u5176\u5b9a\u7fa9\u53ca\u61c9\u7528\u3002<\/p>\n<h2 id=\"%e6%8a%bd%e8%b1%a1%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e7%9a%84%e5%ae%9a%e7%be%a9-uGcxMAJoUC\">\u62bd\u8c61\u6578\u64da\u985e\u578b\u7684\u5b9a\u7fa9<\/h2>\n<p>\u62bd\u8c61\u6578\u64da\u985e\u578b\u662f\u4e00\u7a2e\u6578\u64da\u985e\u578b\uff0c\u5b83\u5b9a\u7fa9\u4e86\u4e00\u7d44\u6578\u64da\u53ca\u5176\u76f8\u95dc\u64cd\u4f5c\uff0c\u800c\u4e0d\u95dc\u5fc3\u5176\u5177\u9ad4\u5be6\u73fe\u3002\u9019\u610f\u5473\u8457\u7528\u6236\u53ef\u4ee5\u4f7f\u7528\u9019\u4e9b\u6578\u64da\u985e\u578b\u9032\u884c\u64cd\u4f5c\uff0c\u800c\u7121\u9700\u4e86\u89e3\u5176\u5167\u90e8\u7d50\u69cb\u3002\u62bd\u8c61\u6578\u64da\u985e\u578b\u901a\u5e38\u7531\u5169\u90e8\u5206\u7d44\u6210\uff1a\u6578\u64da\u7d50\u69cb\u548c\u64cd\u4f5c\u3002\u6578\u64da\u7d50\u69cb\u662f\u7528\u4f86\u5b58\u5132\u6578\u64da\u7684\u65b9\u5f0f\uff0c\u800c\u64cd\u4f5c\u5247\u662f\u5c0d\u9019\u4e9b\u6578\u64da\u9032\u884c\u7684\u64cd\u4f5c\u3002<\/p>\n<h3 id=\"%e6%8a%bd%e8%b1%a1%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e7%9a%84%e7%89%b9%e9%bb%9e-uGcxMAJoUC\">\u62bd\u8c61\u6578\u64da\u985e\u578b\u7684\u7279\u9ede<\/h3>\n<ul>\n<li><strong>\u5c01\u88dd\u6027\uff1a<\/strong>\u62bd\u8c61\u6578\u64da\u985e\u578b\u5c07\u6578\u64da\u548c\u64cd\u4f5c\u5c01\u88dd\u5728\u4e00\u8d77\uff0c\u63d0\u4f9b\u4e86\u4e00\u500b\u6e05\u6670\u7684\u63a5\u53e3\uff0c\u4f7f\u7528\u8005\u7121\u9700\u95dc\u5fc3\u5167\u90e8\u5be6\u73fe\u3002<\/li>\n<li><strong>\u91cd\u7528\u6027\uff1a<\/strong>\u7531\u65bc\u62bd\u8c61\u6578\u64da\u985e\u578b\u7684\u8a2d\u8a08\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u91cd\u7528\u9019\u4e9b\u985e\u578b\uff0c\u5f9e\u800c\u63d0\u9ad8\u958b\u767c\u6548\u7387\u3002<\/li>\n<li><strong>\u53ef\u64f4\u5c55\u6027\uff1a<\/strong>\u62bd\u8c61\u6578\u64da\u985e\u578b\u53ef\u4ee5\u6839\u64da\u9700\u6c42\u9032\u884c\u64f4\u5c55\uff0c\u6dfb\u52a0\u65b0\u7684\u64cd\u4f5c\u6216\u6578\u64da\u7d50\u69cb\uff0c\u800c\u4e0d\u5f71\u97ff\u73fe\u6709\u7684\u529f\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%9c%a8%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e6%87%89%e7%94%a8-uGcxMAJoUC\">\u5728\u6578\u64da\u5eab\u4e2d\u7684\u61c9\u7528<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u62bd\u8c61\u6578\u64da\u985e\u578b\u53ef\u4ee5\u7528\u4f86\u8868\u793a\u8907\u96dc\u7684\u6578\u64da\u7d50\u69cb\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u4e00\u500b\u96fb\u5b50\u5546\u52d9\u61c9\u7528\uff0c\u53ef\u80fd\u9700\u8981\u8868\u793a\u7528\u6236\u3001\u7522\u54c1\u548c\u8a02\u55ae\u7b49\u5be6\u9ad4\u3002\u9019\u4e9b\u5be6\u9ad4\u53ef\u4ee5\u88ab\u5b9a\u7fa9\u70ba\u62bd\u8c61\u6578\u64da\u985e\u578b\uff0c\u4e26\u4e14\u53ef\u4ee5\u5305\u542b\u591a\u7a2e\u5c6c\u6027\u548c\u65b9\u6cd5\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e7%94%a8%e6%88%b6%e6%8a%bd%e8%b1%a1%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-uGcxMAJoUC\">\u793a\u4f8b\uff1a\u7528\u6236\u62bd\u8c61\u6578\u64da\u985e\u578b<\/h3>\n<pre><code>\nCREATE TYPE User AS (\n    user_id INT,\n    username VARCHAR(50),\n    email VARCHAR(100),\n    created_at TIMESTAMP\n);\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e00\u500b\u540d\u70ba <code>User<\/code> \u7684\u62bd\u8c61\u6578\u64da\u985e\u578b\uff0c\u5305\u542b\u4e86\u7528\u6236\u7684ID\u3001\u7528\u6236\u540d\u3001\u96fb\u5b50\u90f5\u4ef6\u548c\u5275\u5efa\u6642\u9593\u7b49\u5c6c\u6027\u3002\u9019\u6a23\u7684\u5b9a\u7fa9\u4f7f\u5f97\u6211\u5011\u53ef\u4ee5\u5728\u6578\u64da\u5eab\u4e2d\u8f15\u9b06\u5730\u7ba1\u7406\u7528\u6236\u4fe1\u606f\u3002<\/p>\n<h3 id=\"%e6%93%8d%e4%bd%9c%e7%9a%84%e5%ae%9a%e7%be%a9-uGcxMAJoUC\">\u64cd\u4f5c\u7684\u5b9a\u7fa9<\/h3>\n<p>\u9664\u4e86\u5b9a\u7fa9\u6578\u64da\u7d50\u69cb\u5916\uff0c\u9084\u53ef\u4ee5\u70ba\u62bd\u8c61\u6578\u64da\u985e\u578b\u5b9a\u7fa9\u64cd\u4f5c\u3002\u4f8b\u5982\uff0c\u6211\u5011\u53ef\u4ee5\u70ba <code>User<\/code> \u985e\u578b\u5b9a\u7fa9\u4e00\u500b\u65b9\u6cd5\u4f86\u66f4\u65b0\u7528\u6236\u7684\u96fb\u5b50\u90f5\u4ef6\uff1a<\/p>\n<pre><code>\nCREATE FUNCTION update_email(user_id INT, new_email VARCHAR(100)) RETURNS VOID AS $$\nBEGIN\n    UPDATE users SET email = new_email WHERE user_id = user_id;\nEND;\n$$ LANGUAGE plpgsql;\n<\/code><\/pre>\n<p>\u9019\u500b\u51fd\u6578\u5141\u8a31\u6211\u5011\u6839\u64da\u7528\u6236ID\u66f4\u65b0\u7528\u6236\u7684\u96fb\u5b50\u90f5\u4ef6\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u5c07\u64cd\u4f5c\u8207\u62bd\u8c61\u6578\u64da\u985e\u578b\u7d50\u5408\u4f7f\u7528\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-uGcxMAJoUC\">\u7d50\u8ad6<\/h2>\n<p>\u62bd\u8c61\u6578\u64da\u985e\u578b\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\u626e\u6f14\u8457\u91cd\u8981\u89d2\u8272\uff0c\u901a\u904e\u63d0\u4f9b\u5c01\u88dd\u6027\u3001\u91cd\u7528\u6027\u548c\u53ef\u64f4\u5c55\u6027\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u6709\u6548\u5730\u7ba1\u7406\u548c\u64cd\u4f5c\u6578\u64da\u3002\u96a8\u8457\u6578\u64da\u5eab\u6280\u8853\u7684\u767c\u5c55\uff0c\u7406\u89e3\u548c\u61c9\u7528\u62bd\u8c61\u6578\u64da\u985e\u578b\u5c07\u6210\u70ba\u958b\u767c\u8005\u5fc5\u5099\u7684\u6280\u80fd\u4e4b\u4e00\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u6216\u5176\u4ed6\u76f8\u95dc\u6280\u8853\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4e86\u89e3\u66f4\u591a\u8cc7\u8a0a\uff0c\u7279\u5225\u662f\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u70ba\u60a8\u7684\u9805\u76ee\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u6578\u64da\u5eab\u4e2d\u62bd\u8c61\u6578\u64da\u985e\u578b\u7684\u5b9a\u7fa9\u53ca\u5176\u5728\u6578\u64da\u7ba1\u7406\u4e2d\u7684\u91cd\u8981\u6027\uff0c\u63d0\u5347\u6578\u64da\u7d50\u69cb\u7684\u9748\u6d3b\u6027\u8207\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-187728","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187728","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=187728"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187728\/revisions"}],"predecessor-version":[{"id":187729,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187728\/revisions\/187729"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=187728"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=187728"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=187728"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}