{"id":78418,"date":"2024-10-16T11:54:16","date_gmt":"2024-10-16T03:54:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/78418\/"},"modified":"2024-10-16T11:54:16","modified_gmt":"2024-10-16T03:54:16","slug":"mysql%e6%8c%87%e4%bb%a4-export_set%ef%bc%88%e8%bc%b8%e5%87%baset%e9%a1%9e%e5%9e%8b%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/78418\/","title":{"rendered":"MySQL\u6307\u4ee4: EXPORT_SET()\uff08\u8f38\u51faSET\u985e\u578b\uff09"},"content":{"rendered":"<h1 id=\"mysql%e6%8c%87%e4%bb%a4-export_set%ef%bc%88%e8%bc%b8%e5%87%baset%e9%a1%9e%e5%9e%8b%ef%bc%89-EjeGjOJKyh\">MySQL\u6307\u4ee4: EXPORT_SET()\uff08\u8f38\u51faSET\u985e\u578b\uff09<\/h1>\n<p>\u5728MySQL\u4e2d\uff0c\u8655\u7406\u6578\u64da\u6642\u7d93\u5e38\u9700\u8981\u5c07\u591a\u500b\u503c\u7d44\u5408\u6210\u4e00\u500b\u5b57\u7b26\u4e32\uff0c\u7279\u5225\u662f\u5728\u8655\u7406SET\u985e\u578b\u7684\u6578\u64da\u6642\u3002MySQL\u63d0\u4f9b\u4e86\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u51fd\u6578\u2014\u2014<code>EXPORT_SET()<\/code>\uff0c\u5b83\u53ef\u4ee5\u5c07SET\u985e\u578b\u7684\u6578\u64da\u8f49\u63db\u70ba\u4e00\u500b\u4ee5\u9017\u865f\u5206\u9694\u7684\u5b57\u7b26\u4e32\uff0c\u9019\u5c0d\u65bc\u6578\u64da\u7684\u986f\u793a\u548c\u8655\u7406\u975e\u5e38\u6709\u5e6b\u52a9\u3002<\/p>\n<h2 id=\"export_set%e5%87%bd%e6%95%b8%e7%9a%84%e8%aa%9e%e6%b3%95-EjeGjOJKyh\">EXPORT_SET()\u51fd\u6578\u7684\u8a9e\u6cd5<\/h2>\n<p><code>EXPORT_SET()<\/code>\u51fd\u6578\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>EXPORT_SET(bitmask, on, off, separator, number_of_bits)<\/code><\/pre>\n<ul>\n<li><strong>bitmask<\/strong>: \u9019\u662f\u8981\u8f49\u63db\u7684SET\u985e\u578b\u7684\u6574\u6578\u503c\u3002<\/li>\n<li><strong>on<\/strong>: \u7576\u4f4d\u5143\u88ab\u8a2d\u7f6e\u70ba1\u6642\uff0c\u8fd4\u56de\u7684\u5b57\u7b26\u4e32\u4e2d\u986f\u793a\u7684\u503c\u3002<\/li>\n<li><strong>off<\/strong>: \u7576\u4f4d\u5143\u88ab\u8a2d\u7f6e\u70ba0\u6642\uff0c\u8fd4\u56de\u7684\u5b57\u7b26\u4e32\u4e2d\u986f\u793a\u7684\u503c\u3002<\/li>\n<li><strong>separator<\/strong>: \u7528\u65bc\u5206\u9694\u8fd4\u56de\u5b57\u7b26\u4e32\u4e2d\u5404\u500b\u503c\u7684\u5b57\u7b26\u3002<\/li>\n<li><strong>number_of_bits<\/strong>: SET\u985e\u578b\u4e2d\u4f4d\u5143\u7684\u6578\u91cf\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e7%af%84%e4%be%8b-EjeGjOJKyh\">\u4f7f\u7528\u7bc4\u4f8b<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba<code>user_permissions<\/code>\u7684\u8868\uff0c\u8a72\u8868\u4e2d\u6709\u4e00\u500b\u540d\u70ba<code>permissions<\/code>\u7684SET\u985e\u578b\u6b04\u4f4d\uff0c\u5305\u542b\u4e86\u7528\u6236\u7684\u4e0d\u540c\u6b0a\u9650\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre><code>CREATE TABLE user_permissions (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    permissions SET('read', 'write', 'delete', 'update')\n);\n<\/code><\/pre>\n<p>\u5982\u679c\u6211\u5011\u63d2\u5165\u4e00\u4e9b\u6578\u64da\uff1a<\/p>\n<pre><code>INSERT INTO user_permissions (permissions) VALUES ('read,write'), ('delete'), ('update,read');\n<\/code><\/pre>\n<p>\u73fe\u5728\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528<code>EXPORT_SET()<\/code>\u51fd\u6578\u4f86\u5c07\u9019\u4e9bSET\u985e\u578b\u7684\u6578\u64da\u8f49\u63db\u70ba\u5b57\u7b26\u4e32\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT id, EXPORT_SET(permissions, 'Yes', 'No', ',', 4) AS permission_list FROM user_permissions;\n<\/code><\/pre>\n<p>\u9019\u5c07\u8fd4\u56de\u4e00\u500b\u7d50\u679c\u96c6\uff0c\u5176\u4e2d<code>permission_list<\/code>\u6b04\u4f4d\u5c07\u986f\u793a\u7528\u6236\u7684\u6b0a\u9650\u5217\u8868\uff0c\u683c\u5f0f\u70ba\uff1a<\/p>\n<pre><code>+----+------------------+\n| id | permission_list   |\n+----+------------------+\n|  1 | Yes,Yes,No,No    |\n|  2 | No,No,No,No      |\n|  3 | Yes,No,No,Yes    |\n+----+------------------+\n<\/code><\/pre>\n<h2 id=\"export_set%e7%9a%84%e6%87%89%e7%94%a8%e5%a0%b4%e6%99%af-EjeGjOJKyh\">EXPORT_SET()\u7684\u61c9\u7528\u5834\u666f<\/h2>\n<p>\u4f7f\u7528<code>EXPORT_SET()<\/code>\u51fd\u6578\u7684\u4e3b\u8981\u512a\u52e2\u5728\u65bc\u5b83\u80fd\u5920\u7c21\u5316\u6578\u64da\u7684\u986f\u793a\u548c\u8655\u7406\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u61c9\u7528\u5834\u666f\uff1a<\/p>\n<ul>\n<li><strong>\u5831\u544a\u751f\u6210<\/strong>: \u5728\u751f\u6210\u5831\u544a\u6642\uff0c\u53ef\u4ee5\u5c07SET\u985e\u578b\u7684\u6578\u64da\u8f49\u63db\u70ba\u6613\u65bc\u95b1\u8b80\u7684\u683c\u5f0f\u3002<\/li>\n<li><strong>\u6578\u64da\u5c0e\u51fa<\/strong>: \u5728\u5c0e\u51fa\u6578\u64da\u5230CSV\u6216\u5176\u4ed6\u683c\u5f0f\u6642\uff0c\u4f7f\u7528<code>EXPORT_SET()<\/code>\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u53ef\u8b80\u6027\u3002<\/li>\n<li><strong>\u7528\u6236\u754c\u9762\u986f\u793a<\/strong>: \u5728\u7528\u6236\u754c\u9762\u4e2d\u986f\u793a\u6b0a\u9650\u6216\u9078\u9805\u6642\uff0c\u5c07SET\u985e\u578b\u7684\u6578\u64da\u8f49\u63db\u70ba\u5b57\u7b26\u4e32\u53ef\u4ee5\u63d0\u9ad8\u7528\u6236\u9ad4\u9a57\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-EjeGjOJKyh\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u7684<code>EXPORT_SET()<\/code>\u51fd\u6578\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5c07SET\u985e\u578b\u7684\u6578\u64da\u8f49\u63db\u70ba\u6613\u65bc\u7406\u89e3\u7684\u5b57\u7b26\u4e32\u683c\u5f0f\u3002\u9019\u5c0d\u65bc\u6578\u64da\u7684\u986f\u793a\u548c\u8655\u7406\u975e\u5e38\u6709\u5e6b\u52a9\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u751f\u6210\u5831\u544a\u6216\u5c0e\u51fa\u6578\u64da\u7684\u60c5\u6cc1\u4e0b\u3002\u4e86\u89e3\u5982\u4f55\u4f7f\u7528\u9019\u500b\u51fd\u6578\uff0c\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u6709\u6548\u5730\u7ba1\u7406\u548c\u5c55\u793a\u6578\u64da\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u9069\u5408\u5404\u7a2e\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>\u4e86\u89e3MySQL\u7684EXPORT_SET()\u51fd\u6578\uff0c\u8f15\u9b06\u5c07SET\u985e\u578b\u6578\u64da\u8f49\u63db\u70ba\u53ef\u8b80\u683c\u5f0f\uff0c\u63d0\u5347\u6578\u64da\u8655\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-78418","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/78418","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=78418"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/78418\/revisions"}],"predecessor-version":[{"id":78419,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/78418\/revisions\/78419"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=78418"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=78418"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=78418"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}