{"id":217772,"date":"2023-12-23T00:00:23","date_gmt":"2023-12-22T16:00:23","guid":{"rendered":"https:\/\/www.idc.net\/help\/217772\/"},"modified":"2023-12-23T00:00:23","modified_gmt":"2023-12-22T16:00:23","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-add-column-type%e5%90%91%e8%a1%a8%e4%b8%ad%e6%b7%bb%e5%8a%a0%e4%b8%80%e4%b8%aa%e6%96%b0%e5%88%97","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/217772\/","title":{"rendered":"MySQL\u4f7f\u7528\u624b\u518c\uff1a\u4f7f\u7528ALTER TABLE [table] ADD (column type)\u5411\u8868\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u65b0\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-add-column-type%e5%90%91%e8%a1%a8%e4%b8%ad%e6%b7%bb%e5%8a%a0%e4%b8%80%e4%b8%aa%e6%96%b0%e5%88%97-RqpzIiGFeB\">MySQL\u4f7f\u7528\u624b\u518c\uff1a\u4f7f\u7528ALTER TABLE [table] ADD (column type)\u5411\u8868\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u65b0\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-add-column-type%e5%90%91%e8%a1%a8%e4%b8%ad%e6%b7%bb%e5%8a%a0%e4%b8%80%e4%b8%aa%e6%96%b0%e5%88%97-RqpzIiGFeB\">MySQL\u4f7f\u7528\u624b\u518c\uff1a\u4f7f\u7528ALTER TABLE [table] ADD (column type)\u5411\u8868\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u65b0\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\u5411\u8868\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u65b0\u5217\u3002<\/p>\n<h2 id=\"%e8%af%ad%e6%b3%95-RqpzIiGFeB\">\u8bed\u6cd5<\/h2>\n<p>ALTER TABLE\u8bed\u53e5\u7684\u57fa\u672c\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>ALTER TABLE [table]\nADD (column type);\n<\/code><\/pre>\n<p>\u5176\u4e2d\uff0c[table]\u662f\u8981\u4fee\u6539\u7684\u8868\u7684\u540d\u79f0\uff0ccolumn\u662f\u8981\u6dfb\u52a0\u7684\u65b0\u5217\u7684\u540d\u79f0\uff0ctype\u662f\u65b0\u5217\u7684\u6570\u636e\u7c7b\u578b\u3002<\/p>\n<h2 id=\"%e7%a4%ba%e4%be%8b-RqpzIiGFeB\">\u793a\u4f8b<\/h2>\n<p>\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u540d\u4e3a\"users\"\u7684\u8868\uff0c\u5b83\u5305\u542b\u4e86\u7528\u6237\u7684\u59d3\u540d\u548c\u5e74\u9f84\u4fe1\u606f\u3002\u73b0\u5728\uff0c\u6211\u4eec\u60f3\u8981\u5411\u8be5\u8868\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u65b0\u5217\"email\"\uff0c\u7528\u4e8e\u5b58\u50a8\u7528\u6237\u7684\u7535\u5b50\u90ae\u4ef6\u5730\u5740\u3002<\/p>\n<p>\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bALTER TABLE\u8bed\u53e5\u6765\u5b9e\u73b0\uff1a<\/p>\n<pre><code>ALTER TABLE users\nADD (email VARCHAR(255));\n<\/code><\/pre>\n<p>\u4e0a\u8ff0\u8bed\u53e5\u5c06\u5728\"users\"\u8868\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u540d\u4e3a\"email\"\u7684\u65b0\u5217\uff0c\u5176\u6570\u636e\u7c7b\u578b\u4e3aVARCHAR\uff0c\u957f\u5ea6\u4e3a255\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a1%b9-RqpzIiGFeB\">\u6ce8\u610f\u4e8b\u9879<\/h2>\n<p>\u5728\u4f7f\u7528ALTER TABLE\u8bed\u53e5\u6dfb\u52a0\u65b0\u5217\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u51e0\u70b9\uff1a<\/p>\n<ul>\n<li>\u65b0\u5217\u7684\u540d\u79f0\u5fc5\u987b\u662f\u552f\u4e00\u7684\uff0c\u4e0d\u80fd\u4e0e\u5df2\u5b58\u5728\u7684\u5217\u91cd\u540d\u3002<\/li>\n<li>\u65b0\u5217\u7684\u6570\u636e\u7c7b\u578b\u5fc5\u987b\u4e0e\u8868\u7684\u5176\u4ed6\u5217\u517c\u5bb9\u3002<\/li>\n<li>\u5982\u679c\u8868\u4e2d\u5df2\u5b58\u5728\u6570\u636e\uff0c\u6dfb\u52a0\u65b0\u5217\u65f6\u9700\u8981\u8003\u8651\u5982\u4f55\u5904\u7406\u8fd9\u4e9b\u6570\u636e\u3002\u53ef\u4ee5\u9009\u62e9\u8bbe\u7f6e\u9ed8\u8ba4\u503c\u3001\u5141\u8bb8\u7a7a\u503c\u6216\u8005\u4f7f\u7528\u5176\u4ed6\u65b9\u5f0f\u6765\u5904\u7406\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%80%bb%e7%bb%93-RqpzIiGFeB\">\u603b\u7ed3<\/h2>\n<p>\u901a\u8fc7\u4f7f\u7528ALTER TABLE\u8bed\u53e5\u7684ADD\u5b50\u53e5\uff0c\u6211\u4eec\u53ef\u4ee5\u5411MySQL\u8868\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u65b0\u5217\u3002\u8fd9\u5bf9\u4e8e\u5728\u5df2\u6709\u8868\u7684\u57fa\u7840\u4e0a\u8fdb\u884c\u6269\u5c55\u548c\u4fee\u6539\u975e\u5e38\u6709\u7528\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5bfb\u627e\u53ef\u9760\u7684\u4e91\u8ba1\u7b97\u670d\u52a1\u63d0\u4f9b\u5546\uff0c\u540e\u6d6a\u4e91\u662f\u60a8\u7684\u9996\u9009\u3002\u6211\u4eec\u63d0\u4f9b\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u548c\u4e91\u670d\u52a1\u5668\u7b49\u591a\u79cd\u4ea7\u54c1\uff0c\u4ee5\u6ee1\u8db3\u60a8\u7684\u4e0d\u540c\u9700\u6c42\u3002\u60a8\u53ef\u4ee5\u8bbf\u95ee\u6211\u4eec\u7684\u5b98\u7f51\u4e86\u89e3\u66f4\u591a\u4fe1\u606f\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] ADD (column type)\u5411\u8868\u4e2d\u6dfb\u52a0\u4e00 [&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-217772","post","type-post","status-publish","format-standard","hentry","category-php"],"_links":{"self":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/217772","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=217772"}],"version-history":[{"count":0,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/posts\/217772\/revisions"}],"wp:attachment":[{"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/media?parent=217772"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/categories?post=217772"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/idc.net\/help\/wp-json\/wp\/v2\/tags?post=217772"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}