{"id":193445,"date":"2024-11-12T22:14:27","date_gmt":"2024-11-12T14:14:27","guid":{"rendered":"https:\/\/server.hk\/cnblog\/193445\/"},"modified":"2024-11-12T22:14:28","modified_gmt":"2024-11-12T14:14:28","slug":"%e5%ad%b8%e7%bf%92mysql%ef%bc%9a%e6%9f%a5%e7%9c%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e7%b5%90%e6%a7%8b%e6%95%99%e7%a8%8b-mysql%e6%9f%a5%e7%9c%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e7%b5%90","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/193445\/","title":{"rendered":"\u5b78\u7fd2MySQL\uff1a\u67e5\u770b\u6578\u64da\u5eab\u8868\u7d50\u69cb\u6559\u7a0b (mysql\u67e5\u770b\u6578\u64da\u5eab\u8868\u7d50\u69cb)"},"content":{"rendered":"<h1 id=\"%e5%ad%b8%e7%bf%92mysql%ef%bc%9a%e6%9f%a5%e7%9c%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e7%b5%90%e6%a7%8b%e6%95%99%e7%a8%8b-jdOIXFpgiI\">\u5b78\u7fd2MySQL\uff1a\u67e5\u770b\u6578\u64da\u5eab\u8868\u7d50\u69cb\u6559\u7a0b<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u4e86\u89e3\u6578\u64da\u5eab\u8868\u7684\u7d50\u69cb\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002MySQL\u4f5c\u70ba\u4e00\u500b\u6d41\u884c\u7684\u958b\u6e90\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u67e5\u770b\u6578\u64da\u5eab\u8868\u7684\u7d50\u69cb\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528MySQL\u547d\u4ee4\u884c\u5de5\u5177\u548c\u5176\u4ed6\u65b9\u6cd5\u4f86\u67e5\u770b\u6578\u64da\u5eab\u8868\u7684\u7d50\u69cb\uff0c\u5e6b\u52a9\u60a8\u66f4\u597d\u5730\u7406\u89e3\u548c\u7ba1\u7406\u60a8\u7684\u6578\u64da\u5eab\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e7%b5%90%e6%a7%8b%ef%bc%9f-jdOIXFpgiI\">\u4ec0\u9ebc\u662f\u6578\u64da\u5eab\u8868\u7d50\u69cb\uff1f<\/h2>\n<p>\u6578\u64da\u5eab\u8868\u7d50\u69cb\u662f\u6307\u8868\u4e2d\u5404\u500b\u5b57\u6bb5\u7684\u540d\u7a31\u3001\u6578\u64da\u985e\u578b\u3001\u7d04\u675f\u689d\u4ef6\u7b49\u4fe1\u606f\u3002\u9019\u4e9b\u4fe1\u606f\u5c0d\u65bc\u6578\u64da\u7684\u5b58\u5132\u548c\u6aa2\u7d22\u81f3\u95dc\u91cd\u8981\u3002\u4e86\u89e3\u8868\u7d50\u69cb\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u8a2d\u8a08\u66f4\u6709\u6548\u7684\u67e5\u8a62\uff0c\u4e26\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8mysql%e5%91%bd%e4%bb%a4%e8%a1%8c%e6%9f%a5%e7%9c%8b%e8%a1%a8%e7%b5%90%e6%a7%8b-jdOIXFpgiI\">\u4f7f\u7528MySQL\u547d\u4ee4\u884c\u67e5\u770b\u8868\u7d50\u69cb<\/h2>\n<p>\u5728MySQL\u4e2d\uff0c\u67e5\u770b\u8868\u7d50\u69cb\u7684\u6700\u5e38\u7528\u65b9\u6cd5\u662f\u4f7f\u7528 <code>DESCRIBE<\/code> \u6216 <code>SHOW COLUMNS<\/code> \u547d\u4ee4\u3002\u4ee5\u4e0b\u662f\u9019\u5169\u7a2e\u65b9\u6cd5\u7684\u5177\u9ad4\u7528\u6cd5\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8describe%e5%91%bd%e4%bb%a4-jdOIXFpgiI\">1. \u4f7f\u7528DESCRIBE\u547d\u4ee4<\/h3>\n<pre><code>DESCRIBE \u8868\u540d;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u6709\u4e00\u500b\u540d\u70ba <code>users<\/code> \u7684\u8868\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u67e5\u770b\u5176\u7d50\u69cb\uff1a<\/p>\n<pre><code>DESCRIBE users;<\/code><\/pre>\n<p>\u57f7\u884c\u5f8c\uff0c\u60a8\u5c07\u770b\u5230\u985e\u4f3c\u4ee5\u4e0b\u7684\u8f38\u51fa\uff1a<\/p>\n<pre><code>+----------+-------------+------+-----+---------+----------------+\n| Field    | Type        | Null | Key | Default | Extra          |\n+----------+-------------+------+-----+---------+----------------+\n| id       | int(11)    | NO   | PRI | NULL    | auto_increment |\n| username | varchar(50) | NO   | UNI | NULL    |                |\n| email    | varchar(100)| NO   |     | NULL    |                |\n| created_at| datetime   | NO   |     | NULL    |                |\n+----------+-------------+------+-----+---------+----------------+<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8show-columns%e5%91%bd%e4%bb%a4-jdOIXFpgiI\">2. \u4f7f\u7528SHOW COLUMNS\u547d\u4ee4<\/h3>\n<pre><code>SHOW COLUMNS FROM \u8868\u540d;<\/code><\/pre>\n<p>\u9019\u500b\u547d\u4ee4\u7684\u7528\u6cd5\u8207 <code>DESCRIBE<\/code> \u985e\u4f3c\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SHOW COLUMNS FROM users;<\/code><\/pre>\n<p>\u9019\u5c07\u8fd4\u56de\u8207 <code>DESCRIBE<\/code> \u76f8\u540c\u7684\u7d50\u679c\uff0c\u986f\u793a\u8868\u7684\u6240\u6709\u5217\u53ca\u5176\u5c6c\u6027\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8information_schema%e6%9f%a5%e7%9c%8b%e8%a1%a8%e7%b5%90%e6%a7%8b-jdOIXFpgiI\">\u4f7f\u7528INFORMATION_SCHEMA\u67e5\u770b\u8868\u7d50\u69cb<\/h2>\n<p>\u9664\u4e86\u4e0a\u8ff0\u547d\u4ee4\uff0cMySQL\u9084\u63d0\u4f9b\u4e86\u4e00\u500b\u540d\u70ba <code>INFORMATION_SCHEMA<\/code> \u7684\u865b\u64ec\u6578\u64da\u5eab\uff0c\u60a8\u53ef\u4ee5\u901a\u904e\u67e5\u8a62\u9019\u500b\u6578\u64da\u5eab\u4f86\u7372\u53d6\u66f4\u8a73\u7d30\u7684\u8868\u7d50\u69cb\u4fe1\u606f\u3002<\/p>\n<pre><code>SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = '\u8868\u540d';<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u8981\u67e5\u770b <code>users<\/code> \u8868\u7684\u7d50\u69cb\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre><code>SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 'users';<\/code><\/pre>\n<p>\u9019\u5c07\u8fd4\u56de\u8a72\u8868\u4e2d\u6240\u6709\u5217\u7684\u8a73\u7d30\u4fe1\u606f\uff0c\u5305\u62ec\u6578\u64da\u985e\u578b\u3001\u662f\u5426\u53ef\u4ee5\u70baNULL\u3001\u9ed8\u8a8d\u503c\u7b49\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e5%9c%96%e5%bd%a2%e5%8c%96%e5%b7%a5%e5%85%b7%e6%9f%a5%e7%9c%8b%e8%a1%a8%e7%b5%90%e6%a7%8b-jdOIXFpgiI\">\u4f7f\u7528\u5716\u5f62\u5316\u5de5\u5177\u67e5\u770b\u8868\u7d50\u69cb<\/h2>\n<p>\u9664\u4e86\u547d\u4ee4\u884c\u5de5\u5177\uff0c\u8a31\u591a\u5716\u5f62\u5316\u6578\u64da\u5eab\u7ba1\u7406\u5de5\u5177\uff08\u5982phpMyAdmin\u3001MySQL Workbench\u7b49\uff09\u4e5f\u63d0\u4f9b\u4e86\u67e5\u770b\u8868\u7d50\u69cb\u7684\u529f\u80fd\u3002\u9019\u4e9b\u5de5\u5177\u901a\u5e38\u63d0\u4f9b\u76f4\u89c0\u7684\u754c\u9762\uff0c\u8b93\u7528\u6236\u53ef\u4ee5\u8f15\u9b06\u5730\u67e5\u770b\u548c\u7de8\u8f2f\u8868\u7d50\u69cb\u3002<\/p>\n<h3 id=\"%e5%9c%a8phpmyadmin%e4%b8%ad%e6%9f%a5%e7%9c%8b%e8%a1%a8%e7%b5%90%e6%a7%8b-jdOIXFpgiI\">\u5728phpMyAdmin\u4e2d\u67e5\u770b\u8868\u7d50\u69cb<\/h3>\n<ul>\n<li>\u767b\u9304\u5230phpMyAdmin\u3002<\/li>\n<li>\u9078\u64c7\u60a8\u8981\u67e5\u770b\u7684\u6578\u64da\u5eab\u3002<\/li>\n<li>\u9ede\u64ca\u5de6\u5074\u7684\u8868\u540d\uff0c\u7136\u5f8c\u9078\u64c7\u201c\u7d50\u69cb\u201d\u9078\u9805\u5361\u3002<\/li>\n<\/ul>\n<p>\u9019\u6a23\u60a8\u5c31\u53ef\u4ee5\u770b\u5230\u8a72\u8868\u7684\u6240\u6709\u5217\u53ca\u5176\u5c6c\u6027\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-jdOIXFpgiI\">\u7e3d\u7d50<\/h2>\n<p>\u4e86\u89e3\u5982\u4f55\u67e5\u770bMySQL\u6578\u64da\u5eab\u8868\u7684\u7d50\u69cb\u662f\u6578\u64da\u5eab\u7ba1\u7406\u7684\u91cd\u8981\u6280\u80fd\u3002\u7121\u8ad6\u662f\u4f7f\u7528\u547d\u4ee4\u884c\u5de5\u5177\u9084\u662f\u5716\u5f62\u5316\u754c\u9762\uff0c\u638c\u63e1\u9019\u4e9b\u65b9\u6cd5\u90fd\u80fd\u5e6b\u52a9\u60a8\u66f4\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u5eab\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u5b58\u5132\u548c\u6aa2\u7d22\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u5e0c\u671b\u672c\u6587\u80fd\u5e6b\u52a9\u60a8\u5728MySQL\u7684\u5b78\u7fd2\u904e\u7a0b\u4e2d\u7372\u5f97\u66f4\u591a\u7684\u555f\u767c\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2MySQL\uff0c\u638c\u63e1\u5982\u4f55\u67e5\u770b\u6578\u64da\u5eab\u8868\u7d50\u69cb\u7684\u6280\u5de7\uff0c\u8f15\u9b06\u7406\u89e3\u6578\u64da\u7d44\u7e54\u8207\u7ba1\u7406\uff0c\u63d0\u5347\u6578\u64da\u5eab\u64cd\u4f5c\u80fd\u529b\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-193445","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/193445","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=193445"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/193445\/revisions"}],"predecessor-version":[{"id":193446,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/193445\/revisions\/193446"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=193445"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=193445"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=193445"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}