{"id":152471,"date":"2024-11-01T23:18:20","date_gmt":"2024-11-01T15:18:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/152471\/"},"modified":"2024-11-01T23:18:21","modified_gmt":"2024-11-01T15:18:21","slug":"%e6%9f%a5%e7%9c%8b-mysql-%e8%a1%a8%e7%b5%90%e6%a7%8b%e7%9a%84%e5%91%bd%e4%bb%a4","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/152471\/","title":{"rendered":"\u67e5\u770b MySQL \u8868\u7d50\u69cb\u7684\u547d\u4ee4"},"content":{"rendered":"<h1 id=\"%e6%9f%a5%e7%9c%8b-mysql-%e8%a1%a8%e7%b5%90%e6%a7%8b%e7%9a%84%e5%91%bd%e4%bb%a4-JXObIVsKhK\">\u67e5\u770b MySQL \u8868\u7d50\u69cb\u7684\u547d\u4ee4<\/h1>\n<p>\u5728\u4f7f\u7528 MySQL \u6578\u64da\u5eab\u6642\uff0c\u4e86\u89e3\u8868\u7684\u7d50\u69cb\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u8868\u7d50\u69cb\u5305\u542b\u4e86\u5b57\u6bb5\u540d\u7a31\u3001\u6578\u64da\u985e\u578b\u3001\u7d22\u5f15\u7b49\u4fe1\u606f\uff0c\u9019\u4e9b\u4fe1\u606f\u5c0d\u65bc\u6578\u64da\u7684\u7ba1\u7406\u548c\u67e5\u8a62\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5e7e\u7a2e\u67e5\u770b MySQL \u8868\u7d50\u69cb\u7684\u5e38\u7528\u547d\u4ee4\uff0c\u5e6b\u52a9\u7528\u6236\u66f4\u597d\u5730\u7406\u89e3\u548c\u64cd\u4f5c\u6578\u64da\u5eab\u3002<\/p>\n<h2 id=\"1-%e4%bd%bf%e7%94%a8-describe-%e5%91%bd%e4%bb%a4-JXObIVsKhK\">1. \u4f7f\u7528 DESCRIBE \u547d\u4ee4<\/h2>\n<p>\u6700\u5e38\u7528\u7684\u67e5\u770b\u8868\u7d50\u69cb\u7684\u547d\u4ee4\u662f <code>DESCRIBE<\/code>\u3002\u9019\u500b\u547d\u4ee4\u53ef\u4ee5\u986f\u793a\u8868\u4e2d\u6240\u6709\u5b57\u6bb5\u7684\u8a73\u7d30\u4fe1\u606f\uff0c\u5305\u62ec\u5b57\u6bb5\u540d\u7a31\u3001\u6578\u64da\u985e\u578b\u3001\u662f\u5426\u53ef\u4ee5\u70ba NULL\u3001\u9375\u985e\u578b\u3001\u9ed8\u8a8d\u503c\u7b49\u3002<\/p>\n<pre><code>DESCRIBE \u8868\u540d;\n<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>users<\/code> \u7684\u8868\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u67e5\u770b\u5176\u7d50\u69cb\uff1a<\/p>\n<pre><code>DESCRIBE users;\n<\/code><\/pre>\n<h2 id=\"2-%e4%bd%bf%e7%94%a8-show-columns-%e5%91%bd%e4%bb%a4-JXObIVsKhK\">2. \u4f7f\u7528 SHOW COLUMNS \u547d\u4ee4<\/h2>\n<p>\u53e6\u4e00\u500b\u5e38\u7528\u7684\u547d\u4ee4\u662f <code>SHOW COLUMNS<\/code>\u3002\u9019\u500b\u547d\u4ee4\u7684\u529f\u80fd\u8207 <code>DESCRIBE<\/code> \u985e\u4f3c\uff0c\u4e5f\u53ef\u4ee5\u986f\u793a\u8868\u7684\u5b57\u6bb5\u4fe1\u606f\u3002<\/p>\n<pre><code>SHOW COLUMNS FROM \u8868\u540d;\n<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u67e5\u770b <code>products<\/code> \u8868\u7684\u7d50\u69cb\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre><code>SHOW COLUMNS FROM products;\n<\/code><\/pre>\n<h2 id=\"3-%e4%bd%bf%e7%94%a8-information_schema-JXObIVsKhK\">3. \u4f7f\u7528 INFORMATION_SCHEMA<\/h2>\n<p>MySQL \u63d0\u4f9b\u4e86\u4e00\u500b\u540d\u70ba <code>INFORMATION_SCHEMA<\/code> \u7684\u6578\u64da\u5eab\uff0c\u9019\u662f\u4e00\u500b\u865b\u64ec\u6578\u64da\u5eab\uff0c\u5305\u542b\u4e86\u6240\u6709\u6578\u64da\u5eab\u7684\u5143\u6578\u64da\u3002\u7528\u6236\u53ef\u4ee5\u901a\u904e\u67e5\u8a62 <code>INFORMATION_SCHEMA.COLUMNS<\/code> \u8868\u4f86\u7372\u53d6\u7279\u5b9a\u8868\u7684\u7d50\u69cb\u4fe1\u606f\u3002<\/p>\n<pre><code>SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = '\u8868\u540d';\n<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u82e5\u8981\u67e5\u8a62 <code>orders<\/code> \u8868\u7684\u7d50\u69cb\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre><code>SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = 'orders';\n<\/code><\/pre>\n<h2 id=\"4-%e4%bd%bf%e7%94%a8-show-create-table-%e5%91%bd%e4%bb%a4-JXObIVsKhK\">4. \u4f7f\u7528 SHOW CREATE TABLE \u547d\u4ee4<\/h2>\n<p>\u5982\u679c\u9700\u8981\u67e5\u770b\u5275\u5efa\u8868\u7684\u5b8c\u6574 SQL \u8a9e\u53e5\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>SHOW CREATE TABLE<\/code> \u547d\u4ee4\u3002\u9019\u500b\u547d\u4ee4\u6703\u986f\u793a\u5275\u5efa\u8868\u7684 SQL \u8a9e\u53e5\uff0c\u5305\u62ec\u6240\u6709\u7684\u7d04\u675f\u548c\u7d22\u5f15\u4fe1\u606f\u3002<\/p>\n<pre><code>SHOW CREATE TABLE \u8868\u540d;\n<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u67e5\u770b <code>employees<\/code> \u8868\u7684\u5275\u5efa\u8a9e\u53e5\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre><code>SHOW CREATE TABLE employees;\n<\/code><\/pre>\n<h2 id=\"5-%e4%bd%bf%e7%94%a8-mysql-workbench-JXObIVsKhK\">5. \u4f7f\u7528 MySQL Workbench<\/h2>\n<p>\u9664\u4e86\u547d\u4ee4\u884c\u5de5\u5177\uff0cMySQL Workbench \u4e5f\u662f\u4e00\u500b\u975e\u5e38\u65b9\u4fbf\u7684\u5de5\u5177\uff0c\u7528\u65bc\u53ef\u8996\u5316\u7ba1\u7406 MySQL \u6578\u64da\u5eab\u3002\u5728 MySQL Workbench \u4e2d\uff0c\u7528\u6236\u53ef\u4ee5\u901a\u904e\u9ede\u64ca\u8868\u540d\u4f86\u67e5\u770b\u8868\u7684\u7d50\u69cb\uff0c\u4e26\u4e14\u53ef\u4ee5\u76f4\u89c0\u5730\u770b\u5230\u5b57\u6bb5\u7684\u8a73\u7d30\u4fe1\u606f\u548c\u6578\u64da\u985e\u578b\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-JXObIVsKhK\">\u7e3d\u7d50<\/h2>\n<p>\u4e86\u89e3\u5982\u4f55\u67e5\u770b MySQL \u8868\u7d50\u69cb\u662f\u6578\u64da\u5eab\u7ba1\u7406\u7684\u91cd\u8981\u6280\u80fd\u3002\u7121\u8ad6\u662f\u4f7f\u7528 <code>DESCRIBE<\/code>\u3001<code>SHOW COLUMNS<\/code>\u3001<code>INFORMATION_SCHEMA<\/code> \u9084\u662f <code>SHOW CREATE TABLE<\/code> \u547d\u4ee4\uff0c\u9019\u4e9b\u5de5\u5177\u90fd\u80fd\u5e6b\u52a9\u7528\u6236\u5feb\u901f\u7372\u53d6\u6240\u9700\u7684\u4fe1\u606f\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u7ba1\u7406\u6578\u64da\u7684\u7528\u6236\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u65b9\u6848\u53ef\u4ee5\u63d0\u4f9b\u66f4\u597d\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\uff0c\u9032\u4e00\u6b65\u63d0\u5347\u6578\u64da\u5eab\u7684\u4f7f\u7528\u9ad4\u9a57\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u4f7f\u7528 MySQL \u547d\u4ee4\u67e5\u770b\u8868\u7d50\u69cb\uff0c\u638c\u63e1\u6578\u64da\u5eab\u7ba1\u7406\u7684\u57fa\u672c\u6280\u5de7\uff0c\u63d0\u5347\u60a8\u7684\u6578\u64da\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-152471","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152471","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=152471"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152471\/revisions"}],"predecessor-version":[{"id":152472,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152471\/revisions\/152472"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=152471"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=152471"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=152471"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}