{"id":76212,"date":"2024-10-16T04:47:17","date_gmt":"2024-10-15T20:47:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/76212\/"},"modified":"2024-10-16T04:47:17","modified_gmt":"2024-10-15T20:47:17","slug":"mysql%e5%85%a5%e9%96%80%ef%bc%9a%e4%bd%bf%e7%94%a8desc-table%e6%8f%8f%e8%bf%b0%e4%b8%80%e5%80%8b%e8%a1%a8%e7%9a%84%e7%b5%90%e6%a7%8b%e3%80%82","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/76212\/","title":{"rendered":"MySQL\u5165\u9580\uff1a\u4f7f\u7528DESC [table]\u63cf\u8ff0\u4e00\u500b\u8868\u7684\u7d50\u69cb\u3002"},"content":{"rendered":"<h1 id=\"mysql%e5%85%a5%e9%96%80%ef%bc%9a%e4%bd%bf%e7%94%a8desc-table%e6%8f%8f%e8%bf%b0%e4%b8%80%e5%80%8b%e8%a1%a8%e7%9a%84%e7%b5%90%e6%a7%8b-tcqeWrIHwt\">MySQL\u5165\u9580\uff1a\u4f7f\u7528DESC [table]\u63cf\u8ff0\u4e00\u500b\u8868\u7684\u7d50\u69cb<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0cMySQL\u662f\u4e00\u500b\u5ee3\u6cdb\u4f7f\u7528\u7684\u958b\u6e90\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u3002\u5c0d\u65bc\u521d\u5b78\u8005\u4f86\u8aaa\uff0c\u4e86\u89e3\u5982\u4f55\u67e5\u770b\u6578\u64da\u8868\u7684\u7d50\u69cb\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528DESC\u547d\u4ee4\u4f86\u63cf\u8ff0\u4e00\u500b\u8868\u7684\u7d50\u69cb\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3MySQL\u7684\u57fa\u672c\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afdesc%e5%91%bd%e4%bb%a4%ef%bc%9f-tcqeWrIHwt\">\u4ec0\u9ebc\u662fDESC\u547d\u4ee4\uff1f<\/h2>\n<p>DESC\u662f\u201cDESCRIBE\u201d\u7684\u7e2e\u5beb\uff0c\u662fMySQL\u4e2d\u7528\u4f86\u986f\u793a\u8868\u7d50\u69cb\u7684\u547d\u4ee4\u3002\u901a\u904e\u9019\u500b\u547d\u4ee4\uff0c\u4f7f\u7528\u8005\u53ef\u4ee5\u7372\u53d6\u8868\u4e2d\u5404\u500b\u5b57\u6bb5\u7684\u8a73\u7d30\u4fe1\u606f\uff0c\u5305\u62ec\u5b57\u6bb5\u540d\u7a31\u3001\u6578\u64da\u985e\u578b\u3001\u662f\u5426\u53ef\u4ee5\u70baNULL\u3001\u9375\u985e\u578b\u3001\u9ed8\u8a8d\u503c\u7b49\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8desc%e5%91%bd%e4%bb%a4%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-tcqeWrIHwt\">\u4f7f\u7528DESC\u547d\u4ee4\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<pre><code>DESC [table_name];<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>[table_name]<\/code>\u662f\u4f60\u60f3\u8981\u63cf\u8ff0\u7684\u8868\u7684\u540d\u7a31\u3002\u7576\u4f60\u57f7\u884c\u9019\u500b\u547d\u4ee4\u6642\uff0cMySQL\u5c07\u8fd4\u56de\u8a72\u8868\u7684\u7d50\u69cb\u4fe1\u606f\u3002<\/p>\n<h2 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8desc%e5%91%bd%e4%bb%a4-tcqeWrIHwt\">\u793a\u4f8b\uff1a\u5982\u4f55\u4f7f\u7528DESC\u547d\u4ee4<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba<code>employees<\/code>\u7684\u8868\uff0c\u7d50\u69cb\u5982\u4e0b\uff1a<\/p>\n<pre><code>CREATE TABLE employees (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    name VARCHAR(100) NOT NULL,\n    position VARCHAR(50),\n    salary DECIMAL(10, 2),\n    hire_date DATE\n);<\/code><\/pre>\n<p>\u8981\u67e5\u770b\u9019\u500b\u8868\u7684\u7d50\u69cb\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>DESC employees;<\/code><\/pre>\n<p>\u57f7\u884c\u5f8c\uff0cMySQL\u5c07\u8fd4\u56de\u985e\u4f3c\u4ee5\u4e0b\u7684\u7d50\u679c\uff1a<\/p>\n<pre><code>+-----------+--------------+------+-----+---------+----------------+\n| Field     | Type         | Null | Key | Default | Extra          |\n+-----------+--------------+------+-----+---------+----------------+\n| id        | int(11)     | NO   | PRI | NULL    | auto_increment  |\n| name      | varchar(100) | NO   |     | NULL    |                |\n| position  | varchar(50)  | YES  |     | NULL    |                |\n| salary    | decimal(10,2)| YES  |     | NULL    |                |\n| hire_date | date         | YES  |     | NULL    |                |\n+-----------+--------------+------+-----+---------+----------------+<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e6%9e%9c%e8%a7%a3%e8%ae%80-tcqeWrIHwt\">\u7d50\u679c\u89e3\u8b80<\/h2>\n<p>\u5f9e\u4e0a\u9762\u7684\u7d50\u679c\u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u770b\u5230\u4ee5\u4e0b\u4fe1\u606f\uff1a<\/p>\n<ul>\n<li><strong>Field\uff1a<\/strong>\u986f\u793a\u5b57\u6bb5\u540d\u7a31\u3002<\/li>\n<li><strong>Type\uff1a<\/strong>\u986f\u793a\u5b57\u6bb5\u7684\u6578\u64da\u985e\u578b\u3002<\/li>\n<li><strong>Null\uff1a<\/strong>\u986f\u793a\u8a72\u5b57\u6bb5\u662f\u5426\u53ef\u4ee5\u70baNULL\u3002<\/li>\n<li><strong>Key\uff1a<\/strong>\u986f\u793a\u8a72\u5b57\u6bb5\u662f\u5426\u662f\u9375\uff08\u5982\u4e3b\u9375\u6216\u7d22\u5f15\uff09\u3002<\/li>\n<li><strong>Default\uff1a<\/strong>\u986f\u793a\u8a72\u5b57\u6bb5\u7684\u9ed8\u8a8d\u503c\u3002<\/li>\n<li><strong>Extra\uff1a<\/strong>\u986f\u793a\u984d\u5916\u4fe1\u606f\uff0c\u5982\u81ea\u589e\u5c6c\u6027\u3002<\/li>\n<\/ul>\n<p>\u9019\u4e9b\u4fe1\u606f\u5c0d\u65bc\u7406\u89e3\u8868\u7684\u7d50\u69cb\u548c\u8a2d\u8a08\u975e\u5e38\u91cd\u8981\uff0c\u7279\u5225\u662f\u5728\u9032\u884c\u6578\u64da\u67e5\u8a62\u548c\u64cd\u4f5c\u6642\u3002<\/p>\n<h2 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