{"id":217773,"date":"2023-12-23T00:01:24","date_gmt":"2023-12-22T16:01:24","guid":{"rendered":"https:\/\/www.idc.net\/help\/217773\/"},"modified":"2023-12-23T00:01:24","modified_gmt":"2023-12-22T16:01:24","slug":"mysql%e4%bd%bf%e7%94%a8%e6%89%8b%e5%86%8c%ef%bc%9a%e4%bd%bf%e7%94%a8alter-table-table-drop-column-column%e4%bb%8e%e8%a1%a8%e4%b8%ad%e7%a7%bb%e9%99%a4%e4%b8%80%e4%b8%aa%e5%88%97","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/217773\/","title":{"rendered":"MySQL\u4f7f\u7528\u624b\u518c\uff1a\u4f7f\u7528ALTER TABLE [table] DROP COLUMN column\u4ece\u8868\u4e2d\u79fb\u9664\u4e00\u4e2a\u5217"},"content":{"rendered":"<p><title id=\"mysql%e4%bd%bf%e7%94%a8%e6%89%8b%e5%86%8c%ef%bc%9a%e4%bd%bf%e7%94%a8alter-table-table-drop-column-column%e4%bb%8e%e8%a1%a8%e4%b8%ad%e7%a7%bb%e9%99%a4%e4%b8%80%e4%b8%aa%e5%88%97-cpFXQbePOd\">MySQL\u4f7f\u7528\u624b\u518c\uff1a\u4f7f\u7528ALTER TABLE [table] DROP COLUMN column\u4ece\u8868\u4e2d\u79fb\u9664\u4e00\u4e2a\u5217<\/title><\/p>\n<h1 id=\"mysql%e4%bd%bf%e7%94%a8%e6%89%8b%e5%86%8c%ef%bc%9a%e4%bd%bf%e7%94%a8alter-table-table-drop-column-column%e4%bb%8e%e8%a1%a8%e4%b8%ad%e7%a7%bb%e9%99%a4%e4%b8%80%e4%b8%aa%e5%88%97-cpFXQbePOd\">MySQL\u4f7f\u7528\u624b\u518c\uff1a\u4f7f\u7528ALTER TABLE [table] DROP COLUMN column\u4ece\u8868\u4e2d\u79fb\u9664\u4e00\u4e2a\u5217<\/h1>\n<p>\u5728MySQL\u4e2d\uff0cALTER TABLE\u8bed\u53e5\u7528\u4e8e\u4fee\u6539\u5df2\u5b58\u5728\u7684\u8868\u7684\u7ed3\u6784\u3002\u901a\u8fc7\u4f7f\u7528ALTER TABLE\u8bed\u53e5\uff0c\u6211\u4eec\u53ef\u4ee5\u6dfb\u52a0\u3001\u4fee\u6539\u6216\u5220\u9664\u8868\u7684\u5217\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8alter-table-drop-column%e8%af%ad%e6%b3%95-cpFXQbePOd\">\u4f7f\u7528ALTER TABLE DROP COLUMN\u8bed\u6cd5<\/h2>\n<p>\u8981\u4ece\u8868\u4e2d\u79fb\u9664\u4e00\u4e2a\u5217\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528ALTER TABLE DROP COLUMN\u8bed\u6cd5\u3002\u4e0b\u9762\u662fALTER TABLE DROP COLUMN\u8bed\u6cd5\u7684\u57fa\u672c\u683c\u5f0f\uff1a<\/p>\n<pre><code>ALTER TABLE [table] DROP COLUMN [column];\n<\/code><\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u8bed\u6cd5\u4e2d\uff0c[table]\u662f\u8981\u4fee\u6539\u7684\u8868\u7684\u540d\u79f0\uff0c[column]\u662f\u8981\u79fb\u9664\u7684\u5217\u7684\u540d\u79f0\u3002<\/p>\n<h2 id=\"%e7%a4%ba%e4%be%8b-cpFXQbePOd\">\u793a\u4f8b<\/h2>\n<p>\u8ba9\u6211\u4eec\u901a\u8fc7\u4e00\u4e2a\u793a\u4f8b\u6765\u6f14\u793a\u5982\u4f55\u4f7f\u7528ALTER TABLE DROP COLUMN\u8bed\u6cd5\u4ece\u8868\u4e2d\u79fb\u9664\u4e00\u4e2a\u5217\u3002<\/p>\n<p>\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u540d\u4e3a\"customers\"\u7684\u8868\uff0c\u5b83\u5305\u542b\u4ee5\u4e0b\u5217\uff1a<\/p>\n<ul>\n<li>id<\/li>\n<li>name<\/li>\n<li>email<\/li>\n<li>phone<\/li>\n<\/ul>\n<p>\u73b0\u5728\uff0c\u6211\u4eec\u60f3\u8981\u4ece\u8868\u4e2d\u79fb\u9664\"phone\"\u5217\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bALTER TABLE\u8bed\u53e5\u6765\u5b9e\u73b0\uff1a<\/p>\n<pre><code>ALTER TABLE customers DROP COLUMN phone;\n<\/code><\/pre>\n<p>\u6267\u884c\u4e0a\u8ff0\u8bed\u53e5\u540e\uff0c\"phone\"\u5217\u5c06\u4ece\"customers\"\u8868\u4e2d\u88ab\u79fb\u9664\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a1%b9-cpFXQbePOd\">\u6ce8\u610f\u4e8b\u9879<\/h2>\n<p>\u5728\u4f7f\u7528ALTER TABLE DROP COLUMN\u8bed\u53e5\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u51e0\u70b9\uff1a<\/p>\n<ol>\n<li>\u88ab\u79fb\u9664\u7684\u5217\u53ca\u5176\u76f8\u5173\u6570\u636e\u5c06\u6c38\u4e45\u5220\u9664\uff0c\u65e0\u6cd5\u6062\u590d\uff0c\u8bf7\u786e\u4fdd\u5728\u6267\u884c\u8be5\u8bed\u53e5\u4e4b\u524d\u8fdb\u884c\u5907\u4efd\u3002<\/li>\n<li>\u5982\u679c\u88ab\u79fb\u9664\u7684\u5217\u662f\u8868\u7684\u4e3b\u952e\u5217\u6216\u5305\u542b\u7d22\u5f15\u7684\u5217\uff0c\u90a3\u4e48\u5728\u79fb\u9664\u4e4b\u524d\u9700\u8981\u5148\u5220\u9664\u76f8\u5173\u7684\u4e3b\u952e\u6216\u7d22\u5f15\u3002<\/li>\n<li>\u5982\u679c\u88ab\u79fb\u9664\u7684\u5217\u662f\u5176\u4ed6\u8868\u7684\u5916\u952e\uff0c\u90a3\u4e48\u5728\u79fb\u9664\u4e4b\u524d\u9700\u8981\u5148\u5220\u9664\u76f8\u5173\u7684\u5916\u952e\u3002<\/li>\n<\/ol>\n<h2 id=\"%e6%80%bb%e7%bb%93-cpFXQbePOd\">\u603b\u7ed3<\/h2>\n<p>\u901a\u8fc7\u4f7f\u7528ALTER TABLE DROP COLUMN\u8bed\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u5730\u4eceMySQL\u8868\u4e2d\u79fb\u9664\u4e00\u4e2a\u5217\u3002\u8fd9\u662f\u4e00\u4e2a\u975e\u5e38\u6709\u7528\u7684\u529f\u80fd\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u6839\u636e\u9700\u6c42\u52a8\u6001\u5730\u4fee\u6539\u8868\u7684\u7ed3\u6784\u3002<\/p>\n<p>\u5982\u679c\u60a8\u60f3\u4e86\u89e3\u66f4\u591a\u5173\u4e8eMySQL\u7684\u4f7f\u7528\u624b\u518c\uff0c\u8bf7\u8bbf\u95ee\u6211\u4eec\u7684\u5b98\u65b9\u7f51\u7ad9\uff1a<a href=\"https:\/\/idc.net\">https:\/\/idc.net<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MySQL\u4f7f\u7528\u624b\u518c\uff1a\u4f7f\u7528ALTER TABLE [table] DROP COLUMN column\u4ece\u8868\u4e2d\u79fb\u9664 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[197851],"tags":[],"class_list":["post-217773","post","type-post","status-publish","format-standard","hentry","category-php"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/217773","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/comments?post=217773"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/217773\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=217773"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=217773"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=217773"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}