{"id":187636,"date":"2024-11-11T15:55:20","date_gmt":"2024-11-11T07:55:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/187636\/"},"modified":"2024-11-11T15:55:21","modified_gmt":"2024-11-11T07:55:21","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b4%84%e6%9d%9f%e5%af%a6%e7%8f%be%e9%9b%bb%e5%ad%90%e9%83%b5%e4%bb%b6%e6%a0%bc%e5%bc%8f%e6%a0%a1%e9%a9%97-%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b4%84%e6%9d%9f%e9%9b%bb%e5%ad%90","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/187636\/","title":{"rendered":"\u6578\u64da\u5eab\u7d04\u675f\u5be6\u73fe\u96fb\u5b50\u90f5\u4ef6\u683c\u5f0f\u6821\u9a57 (\u6578\u64da\u5eab\u7d04\u675f\u96fb\u5b50\u90f5\u4ef6)"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b4%84%e6%9d%9f%e5%af%a6%e7%8f%be%e9%9b%bb%e5%ad%90%e9%83%b5%e4%bb%b6%e6%a0%bc%e5%bc%8f%e6%a0%a1%e9%a9%97-%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b4%84%e6%9d%9f%e9%9b%bb%e5%ad%90-hgSipDxiIx\">\u6578\u64da\u5eab\u7d04\u675f\u5be6\u73fe\u96fb\u5b50\u90f5\u4ef6\u683c\u5f0f\u6821\u9a57 (\u6578\u64da\u5eab\u7d04\u675f\u96fb\u5b50\u90f5\u4ef6)<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u5b57\u5316\u7684\u6642\u4ee3\uff0c\u96fb\u5b50\u90f5\u4ef6\u5df2\u6210\u70ba\u4eba\u5011\u65e5\u5e38\u4ea4\u6d41\u548c\u5546\u696d\u904b\u4f5c\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002\u96a8\u8457\u96fb\u5b50\u90f5\u4ef6\u7684\u5ee3\u6cdb\u4f7f\u7528\uff0c\u78ba\u4fdd\u7528\u6236\u63d0\u4f9b\u7684\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\u683c\u5f0f\u6b63\u78ba\u8b8a\u5f97\u5c24\u70ba\u91cd\u8981\u3002\u70ba\u4e86\u63d0\u9ad8\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u6e96\u78ba\u6027\uff0c\u8a31\u591a\u958b\u767c\u8005\u9078\u64c7\u5728\u6578\u64da\u5eab\u5c64\u9762\u5be6\u65bd\u96fb\u5b50\u90f5\u4ef6\u683c\u5f0f\u7684\u6821\u9a57\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u901a\u904e\u6578\u64da\u5eab\u7d04\u675f\u4f86\u5be6\u73fe\u96fb\u5b50\u90f5\u4ef6\u683c\u5f0f\u7684\u6821\u9a57\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b4%84%e6%9d%9f%ef%bc%9f-hgSipDxiIx\">\u4ec0\u9ebc\u662f\u6578\u64da\u5eab\u7d04\u675f\uff1f<\/h2>\n<p>\u6578\u64da\u5eab\u7d04\u675f\u662f\u7528\u4f86\u9650\u5236\u6578\u64da\u5eab\u4e2d\u6578\u64da\u7684\u985e\u578b\u3001\u7bc4\u570d\u548c\u683c\u5f0f\u7684\u898f\u5247\u3002\u9019\u4e9b\u7d04\u675f\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002\u5e38\u898b\u7684\u6578\u64da\u5eab\u7d04\u675f\u5305\u62ec\u4e3b\u9375\u7d04\u675f\u3001\u5916\u9375\u7d04\u675f\u3001\u552f\u4e00\u7d04\u675f\u3001\u6aa2\u67e5\u7d04\u675f\u7b49\u3002\u5728\u96fb\u5b50\u90f5\u4ef6\u683c\u5f0f\u6821\u9a57\u7684\u60c5\u5883\u4e0b\uff0c\u6aa2\u67e5\u7d04\u675f\uff08CHECK constraint\uff09\u662f\u6700\u5e38\u7528\u7684\u5de5\u5177\u3002<\/p>\n<h2 id=\"%e9%9b%bb%e5%ad%90%e9%83%b5%e4%bb%b6%e6%a0%bc%e5%bc%8f%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%a6%8f%e5%89%87-hgSipDxiIx\">\u96fb\u5b50\u90f5\u4ef6\u683c\u5f0f\u7684\u57fa\u672c\u898f\u5247<\/h2>\n<p>\u5728\u5be6\u65bd\u96fb\u5b50\u90f5\u4ef6\u683c\u5f0f\u6821\u9a57\u4e4b\u524d\uff0c\u4e86\u89e3\u96fb\u5b50\u90f5\u4ef6\u7684\u57fa\u672c\u683c\u5f0f\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u6839\u64daRFC 5321\u548cRFC 5322\u7684\u898f\u7bc4\uff0c\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\u901a\u5e38\u7531\u4ee5\u4e0b\u5e7e\u90e8\u5206\u7d44\u6210\uff1a<\/p>\n<ul>\n<li>\u672c\u5730\u90e8\u5206\uff08local part\uff09\uff1a\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\u7684\u7b2c\u4e00\u90e8\u5206\uff0c\u901a\u5e38\u662f\u7528\u6236\u540d\u3002<\/li>\n<li>\u57df\u540d\u90e8\u5206\uff08domain part\uff09\uff1a\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\u7684\u7b2c\u4e8c\u90e8\u5206\uff0c\u901a\u5e38\u662f\u90f5\u4ef6\u4f3a\u670d\u5668\u7684\u57df\u540d\u3002<\/li>\n<\/ul>\n<p>\u4e00\u500b\u6709\u6548\u7684\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\u7684\u7bc4\u4f8b\u70ba\uff1a<code>example@domain.com<\/code>\u3002\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c<code>example<\/code>\u662f\u672c\u5730\u90e8\u5206\uff0c\u800c<code>domain.com<\/code>\u662f\u57df\u540d\u90e8\u5206\u3002<\/p>\n<h2 id=\"%e5%9c%a8%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e5%af%a6%e6%96%bd%e9%9b%bb%e5%ad%90%e9%83%b5%e4%bb%b6%e6%a0%bc%e5%bc%8f%e6%a0%a1%e9%a9%97-hgSipDxiIx\">\u5728\u6578\u64da\u5eab\u4e2d\u5be6\u65bd\u96fb\u5b50\u90f5\u4ef6\u683c\u5f0f\u6821\u9a57<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u4e2d\u5be6\u65bd\u96fb\u5b50\u90f5\u4ef6\u683c\u5f0f\u6821\u9a57\u7684\u5e38\u898b\u65b9\u6cd5\u662f\u4f7f\u7528\u6aa2\u67e5\u7d04\u675f\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528SQL\u8a9e\u53e5\u5275\u5efa\u4e00\u500b\u5305\u542b\u96fb\u5b50\u90f5\u4ef6\u683c\u5f0f\u6821\u9a57\u7684\u8868\u7684\u7bc4\u4f8b\uff1a<\/p>\n<pre><code>CREATE TABLE users (\n    id INT PRIMARY KEY,\n    email VARCHAR(255) NOT NULL,\n    CHECK (email ~ '^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\\.[A-Z|a-z]{2,}$')\n);<\/code><\/pre>\n<p>\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u540d\u70ba<code>users<\/code>\u7684\u8868\uff0c\u4e26\u70ba<code>email<\/code>\u6b04\u4f4d\u6dfb\u52a0\u4e86\u4e00\u500b\u6aa2\u67e5\u7d04\u675f\u3002\u9019\u500b\u7d04\u675f\u4f7f\u7528\u6b63\u5247\u8868\u9054\u5f0f\u4f86\u9a57\u8b49\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\u7684\u683c\u5f0f\u3002\u6b63\u5247\u8868\u9054\u5f0f\u7684\u89e3\u91cb\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li><code>^[A-Za-z0-9._%+-]+<\/code>\uff1a\u5339\u914d\u672c\u5730\u90e8\u5206\uff0c\u53ef\u4ee5\u5305\u542b\u5b57\u6bcd\u3001\u6578\u5b57\u548c\u4e00\u4e9b\u7279\u6b8a\u5b57\u7b26\u3002<\/li>\n<li><code>@<\/code>\uff1a\u5fc5\u9808\u5305\u542b\u4e00\u500b@\u7b26\u865f\u3002<\/li>\n<li><code>[A-Za-z0-9.-]+<\/code>\uff1a\u5339\u914d\u57df\u540d\u90e8\u5206\uff0c\u53ef\u4ee5\u5305\u542b\u5b57\u6bcd\u3001\u6578\u5b57\u548c\u9ede\u865f\u3002<\/li>\n<li><code>\\.[A-Z|a-z]{2,}$<\/code>\uff1a\u5fc5\u9808\u4ee5\u4e00\u500b\u9ede\u865f\u548c\u81f3\u5c11\u5169\u500b\u5b57\u6bcd\u7d50\u5c3e\uff0c\u8868\u793a\u9802\u7d1a\u57df\u540d\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%b8%ac%e8%a9%a6%e9%9b%bb%e5%ad%90%e9%83%b5%e4%bb%b6%e6%a0%bc%e5%bc%8f%e6%a0%a1%e9%a9%97-hgSipDxiIx\">\u6e2c\u8a66\u96fb\u5b50\u90f5\u4ef6\u683c\u5f0f\u6821\u9a57<\/h2>\n<p>\u5728\u5275\u5efa\u8868\u5f8c\uff0c\u53ef\u4ee5\u901a\u904e\u63d2\u5165\u6578\u64da\u4f86\u6e2c\u8a66\u96fb\u5b50\u90f5\u4ef6\u683c\u5f0f\u6821\u9a57\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>INSERT INTO users (id, email) VALUES (1, 'test@example.com'); -- \u6210\u529f\nINSERT INTO users (id, email) VALUES (2, 'invalid-email'); -- \u5931\u6557\uff0c\u56e0\u70ba\u683c\u5f0f\u4e0d\u6b63\u78ba\n<\/code><\/pre>\n<p>\u7b2c\u4e00\u689d\u63d2\u5165\u8a9e\u53e5\u5c07\u6210\u529f\u57f7\u884c\uff0c\u800c\u7b2c\u4e8c\u689d\u63d2\u5165\u8a9e\u53e5\u5c07\u56e0\u70ba\u96fb\u5b50\u90f5\u4ef6\u683c\u5f0f\u4e0d\u6b63\u78ba\u800c\u5931\u6557\uff0c\u5f9e\u800c\u4fdd\u8b77\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\u5b8c\u6574\u6027\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-hgSipDxiIx\">\u7d50\u8ad6<\/h2>\n<p>\u901a\u904e\u5728\u6578\u64da\u5eab\u4e2d\u5be6\u65bd\u96fb\u5b50\u90f5\u4ef6\u683c\u5f0f\u6821\u9a57\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u63d0\u9ad8\u6578\u64da\u7684\u6e96\u78ba\u6027\u548c\u5b8c\u6574\u6027\u3002\u4f7f\u7528\u6aa2\u67e5\u7d04\u675f\u548c\u6b63\u5247\u8868\u9054\u5f0f\u662f\u4e00\u7a2e\u7c21\u55ae\u800c\u6709\u6548\u7684\u65b9\u6cd5\u4f86\u78ba\u4fdd\u7528\u6236\u8f38\u5165\u7684\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\u7b26\u5408\u9810\u671f\u7684\u683c\u5f0f\u3002\u9019\u4e0d\u50c5\u80fd\u5920\u6e1b\u5c11\u6578\u64da\u932f\u8aa4\uff0c\u9084\u80fd\u63d0\u9ad8\u7528\u6236\u9ad4\u9a57\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5be6\u73fe\u6578\u64da\u5eab\u7d04\u675f\u4ee5\u6821\u9a57\u96fb\u5b50\u90f5\u4ef6\u683c\u5f0f\uff0c\u78ba\u4fdd\u6578\u64da\u6e96\u78ba\u6027\u8207\u4e00\u81f4\u6027\uff0c\u63d0\u5347\u7cfb\u7d71\u53ef\u9760\u6027\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-187636","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187636","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=187636"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187636\/revisions"}],"predecessor-version":[{"id":187637,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187636\/revisions\/187637"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=187636"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=187636"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=187636"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}