{"id":194797,"date":"2024-11-13T09:39:19","date_gmt":"2024-11-13T01:39:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/194797\/"},"modified":"2024-11-13T09:39:20","modified_gmt":"2024-11-13T01:39:20","slug":"%e5%a5%bd%e5%8f%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%ad%e8%a8%88%e6%8c%87%e5%8d%97-%e5%a5%bd%e5%8f%8b-%e6%95%b8%e6%93%9a%e5%ba%ab-%e8%a8%ad%e8%a8%88","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/194797\/","title":{"rendered":"\u597d\u53cb\u6578\u64da\u5eab\u8a2d\u8a08\u6307\u5357 (\u597d\u53cb \u6578\u64da\u5eab \u8a2d\u8a08)"},"content":{"rendered":"<h1 id=\"%e5%a5%bd%e5%8f%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%ad%e8%a8%88%e6%8c%87%e5%8d%97-DaUFZtbxmj\">\u597d\u53cb\u6578\u64da\u5eab\u8a2d\u8a08\u6307\u5357<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u4f4d\u6642\u4ee3\uff0c\u793e\u4ea4\u5a92\u9ad4\u548c\u5728\u7dda\u5e73\u53f0\u7684\u8208\u8d77\u4f7f\u5f97\u597d\u53cb\u6578\u64da\u5eab\u7684\u8a2d\u8a08\u8b8a\u5f97\u5c24\u70ba\u91cd\u8981\u3002\u597d\u53cb\u6578\u64da\u5eab\u4e0d\u50c5\u50c5\u662f\u5b58\u5132\u7528\u6236\u4e4b\u9593\u95dc\u4fc2\u7684\u5de5\u5177\uff0c\u66f4\u662f\u652f\u6301\u5404\u7a2e\u793e\u4ea4\u529f\u80fd\u7684\u57fa\u790e\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u597d\u53cb\u6578\u64da\u5eab\u7684\u8a2d\u8a08\u539f\u5247\u3001\u7d50\u69cb\u4ee5\u53ca\u5be6\u73fe\u65b9\u6cd5\u3002<\/p>\n<h2 id=\"%e5%a5%bd%e5%8f%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-DaUFZtbxmj\">\u597d\u53cb\u6578\u64da\u5eab\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u597d\u53cb\u6578\u64da\u5eab\u4e3b\u8981\u7528\u65bc\u7ba1\u7406\u7528\u6236\u4e4b\u9593\u7684\u95dc\u4fc2\u3002\u9019\u4e9b\u95dc\u4fc2\u53ef\u4ee5\u662f\u55ae\u5411\u7684\uff08\u4f8b\u5982\uff0cA\u7528\u6236\u95dc\u6ce8B\u7528\u6236\uff09\u6216\u96d9\u5411\u7684\uff08\u4f8b\u5982\uff0cA\u548cB\u4e92\u70ba\u597d\u53cb\uff09\u3002\u8a2d\u8a08\u4e00\u500b\u6709\u6548\u7684\u597d\u53cb\u6578\u64da\u5eab\u9700\u8981\u8003\u616e\u4ee5\u4e0b\u5e7e\u500b\u65b9\u9762\uff1a<\/p>\n<ul>\n<li>\u6578\u64da\u7684\u5b8c\u6574\u6027<\/li>\n<li>\u67e5\u8a62\u7684\u6548\u7387<\/li>\n<li>\u64f4\u5c55\u6027<\/li>\n<li>\u5b89\u5168\u6027<\/li>\n<\/ul>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b5%90%e6%a7%8b%e8%a8%ad%e8%a8%88-DaUFZtbxmj\">\u6578\u64da\u5eab\u7d50\u69cb\u8a2d\u8a08<\/h2>\n<p>\u5728\u8a2d\u8a08\u597d\u53cb\u6578\u64da\u5eab\u6642\uff0c\u901a\u5e38\u6703\u4f7f\u7528\u95dc\u806f\u6578\u64da\u5eab\u4f86\u5b58\u5132\u7528\u6236\u548c\u597d\u53cb\u95dc\u4fc2\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u6578\u64da\u5eab\u7d50\u69cb\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nCREATE TABLE Users (\n    user_id INT PRIMARY KEY AUTO_INCREMENT,\n    username VARCHAR(50) NOT NULL,\n    email VARCHAR(100) NOT NULL UNIQUE,\n    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP\n);\n\nCREATE TABLE Friendships (\n    user_id1 INT,\n    user_id2 INT,\n    status ENUM('pending', 'accepted', 'blocked') DEFAULT 'pending',\n    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,\n    PRIMARY KEY (user_id1, user_id2),\n    FOREIGN KEY (user_id1) REFERENCES Users(user_id),\n    FOREIGN KEY (user_id2) REFERENCES Users(user_id)\n);\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u8a2d\u8a08\u4e2d\uff0c\u6211\u5011\u6709\u5169\u500b\u8868\uff1aUsers\u8868\u7528\u65bc\u5b58\u5132\u7528\u6236\u4fe1\u606f\uff0cFriendships\u8868\u7528\u65bc\u5b58\u5132\u7528\u6236\u4e4b\u9593\u7684\u95dc\u4fc2\u3002Friendships\u8868\u4e2d\u7684status\u5b57\u6bb5\u53ef\u4ee5\u5e6b\u52a9\u6211\u5011\u7ba1\u7406\u597d\u53cb\u8acb\u6c42\u7684\u72c0\u614b\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c-DaUFZtbxmj\">\u6578\u64da\u5eab\u64cd\u4f5c<\/h2>\n<p>\u5728\u8a2d\u8a08\u597d\u53cb\u6578\u64da\u5eab\u6642\uff0c\u5e38\u898b\u7684\u64cd\u4f5c\u5305\u62ec\u6dfb\u52a0\u597d\u53cb\u3001\u522a\u9664\u597d\u53cb\u548c\u67e5\u8a62\u597d\u53cb\u5217\u8868\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u7684SQL\u67e5\u8a62\u793a\u4f8b\uff1a<\/p>\n<h3 id=\"%e6%b7%bb%e5%8a%a0%e5%a5%bd%e5%8f%8b-DaUFZtbxmj\">\u6dfb\u52a0\u597d\u53cb<\/h3>\n<pre><code>\nINSERT INTO Friendships (user_id1, user_id2, status) \nVALUES (1, 2, 'pending');\n<\/code><\/pre>\n<h3 id=\"%e6%8e%a5%e5%8f%97%e5%a5%bd%e5%8f%8b%e8%ab%8b%e6%b1%82-DaUFZtbxmj\">\u63a5\u53d7\u597d\u53cb\u8acb\u6c42<\/h3>\n<pre><code>\nUPDATE Friendships \nSET status = 'accepted' \nWHERE user_id1 = 1 AND user_id2 = 2;\n<\/code><\/pre>\n<h3 id=\"%e6%9f%a5%e8%a9%a2%e5%a5%bd%e5%8f%8b%e5%88%97%e8%a1%a8-DaUFZtbxmj\">\u67e5\u8a62\u597d\u53cb\u5217\u8868<\/h3>\n<pre><code>\nSELECT u.username \nFROM Users u \nJOIN Friendships f ON u.user_id = f.user_id2 \nWHERE f.user_id1 = 1 AND f.status = 'accepted';\n<\/code><\/pre>\n<h2 id=\"%e6%80%a7%e8%83%bd%e8%80%83%e9%87%8f-DaUFZtbxmj\">\u6027\u80fd\u8003\u91cf<\/h2>\n<p>\u96a8\u8457\u7528\u6236\u6578\u91cf\u7684\u589e\u52a0\uff0c\u597d\u53cb\u6578\u64da\u5eab\u7684\u6027\u80fd\u53ef\u80fd\u6703\u53d7\u5230\u5f71\u97ff\u3002\u70ba\u4e86\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\uff0c\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u5e7e\u7a2e\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li>\u5efa\u7acb\u7d22\u5f15\uff1a\u5728user_id1\u548cuser_id2\u5b57\u6bb5\u4e0a\u5efa\u7acb\u7d22\u5f15\uff0c\u4ee5\u52a0\u5feb\u67e5\u8a62\u901f\u5ea6\u3002<\/li>\n<li>\u5206\u5340\u8868\uff1a\u5c0d\u65bc\u5927\u578b\u6578\u64da\u96c6\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u5206\u5340\u8868\u4f86\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n<li>\u7de9\u5b58\u6a5f\u5236\uff1a\u4f7f\u7528\u7de9\u5b58\u6280\u8853\uff08\u5982Redis\uff09\u4f86\u5b58\u5132\u5e38\u7528\u7684\u597d\u53cb\u5217\u8868\uff0c\u6e1b\u5c11\u6578\u64da\u5eab\u67e5\u8a62\u7684\u983b\u7387\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%ae%89%e5%85%a8%e6%80%a7%e8%80%83%e9%87%8f-DaUFZtbxmj\">\u5b89\u5168\u6027\u8003\u91cf<\/h2>\n<p>\u5728\u8a2d\u8a08\u597d\u53cb\u6578\u64da\u5eab\u6642\uff0c\u5b89\u5168\u6027\u662f\u4e0d\u53ef\u5ffd\u8996\u7684\u56e0\u7d20\u3002\u61c9\u8003\u616e\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u6578\u64da\u52a0\u5bc6\uff1a\u5c0d\u654f\u611f\u6578\u64da\uff08\u5982\u7528\u6236\u96fb\u5b50\u90f5\u4ef6\uff09\u9032\u884c\u52a0\u5bc6\u5b58\u5132\u3002<\/li>\n<li>\u6b0a\u9650\u63a7\u5236\uff1a\u78ba\u4fdd\u53ea\u6709\u6388\u6b0a\u7528\u6236\u53ef\u4ee5\u8a2a\u554f\u548c\u4fee\u6539\u597d\u53cb\u95dc\u4fc2\u3002<\/li>\n<li>\u9632\u6b62SQL\u6ce8\u5165\uff1a\u4f7f\u7528\u53c3\u6578\u5316\u67e5\u8a62\u4f86\u9632\u6b62SQL\u6ce8\u5165\u653b\u64ca\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-DaUFZtbxmj\">\u7e3d\u7d50<\/h2>\n<p>\u8a2d\u8a08\u4e00\u500b\u9ad8\u6548\u7684\u597d\u53cb\u6578\u64da\u5eab\u9700\u8981\u8003\u616e\u591a\u65b9\u9762\u7684\u56e0\u7d20\uff0c\u5305\u62ec\u6578\u64da\u7d50\u69cb\u3001\u6027\u80fd\u512a\u5316\u548c\u5b89\u5168\u6027\u3002\u901a\u904e\u5408\u7406\u7684\u8a2d\u8a08\u548c\u5be6\u73fe\uff0c\u53ef\u4ee5\u70ba\u7528\u6236\u63d0\u4f9b\u6d41\u66a2\u7684\u793e\u4ea4\u9ad4\u9a57\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u597d\u53cb\u6578\u64da\u5eab\u8a2d\u8a08\u6307\u5357\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u7ba1\u7406\u548c\u7d44\u7e54\u597d\u53cb\u8cc7\u6599\uff0c\u63d0\u5347\u793e\u4ea4\u61c9\u7528\u7684\u6027\u80fd\u8207\u7528\u6236\u9ad4\u9a57\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-194797","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194797","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=194797"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194797\/revisions"}],"predecessor-version":[{"id":194798,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194797\/revisions\/194798"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=194797"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=194797"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=194797"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}