{"id":6580,"date":"2024-11-14T10:32:35","date_gmt":"2024-11-14T02:32:35","guid":{"rendered":"https:\/\/fwq.ai\/blog\/6580\/"},"modified":"2024-11-14T10:32:35","modified_gmt":"2024-11-14T02:32:35","slug":"mysql%e6%95%b0%e6%8d%ae%e5%ba%93%e6%80%8e%e4%b9%88%e5%88%a0%e9%99%a4%e5%ad%97%e6%ae%b5","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/6580\/","title":{"rendered":"mysql\u6570\u636e\u5e93\u600e\u4e48\u5220\u9664\u5b57\u6bb5"},"content":{"rendered":"<blockquote><p>\n  \u4f7f\u7528 alter table \u8bed\u53e5\u5220\u9664\u5b57\u6bb5\uff1a\u6307\u5b9a\u8868\u540d\uff1aalter table table_name\u4f7f\u7528 drop column \u5b50\u53e5\uff1adrop column column_name\u66ff\u6362 table_name \u548c column_name \u4e3a\u5b9e\u9645\u503c\uff0c\u4f8b\u5982\uff1aalter table employees drop column phone_number\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202408\/06\/2024080610515691253.jpg\" class=\"aligncenter\" title=\"mysql\u6570\u636e\u5e93\u600e\u4e48\u5220\u9664\u5b57\u6bb5\u63d2\u56fe\" alt=\"mysql\u6570\u636e\u5e93\u600e\u4e48\u5220\u9664\u5b57\u6bb5\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5728 MySQL \u6570\u636e\u5e93\u4e2d\u5220\u9664\u5b57\u6bb5<\/strong><\/p>\n<p><strong>\u5982\u4f55\u5220\u9664 MySQL \u8868\u4e2d\u7684\u5b57\u6bb5\uff1f<\/strong><\/p>\n<p>\u5728 MySQL \u6570\u636e\u5e93\u4e2d\u5220\u9664\u8868\u4e2d\u7684\u5b57\u6bb5\uff0c\u53ef\u4ee5\u4f7f\u7528 ALTER TABLE \u8bed\u53e5\uff0c\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre>ALTER TABLE table_name DROP COLUMN column_name;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5176\u4e2d\uff1a<\/p>\n<ul>\n<li>table_name \u662f\u8981\u5220\u9664\u5b57\u6bb5\u7684\u8868\u7684\u540d\u79f0\u3002<\/li>\n<li>column_name \u662f\u8981\u5220\u9664\u7684\u5b57\u6bb5\u7684\u540d\u79f0\u3002<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<pre>ALTER TABLE employees DROP COLUMN phone_number;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8fd9\u5c06\u4ece employees \u8868\u4e2d\u5220\u9664 phone_number \u5b57\u6bb5\u3002<\/p>\n<p><strong>\u6ce8\u610f\u4e8b\u9879\uff1a<\/strong><\/p>\n<ul>\n<li>\u5220\u9664\u5b57\u6bb5\u662f\u4e00\u4e2a\u4e0d\u53ef\u9006\u7684\u64cd\u4f5c\uff0c\u56e0\u6b64\u5728\u6267\u884c\u6b64\u64cd\u4f5c\u4e4b\u524d\u8bf7\u786e\u4fdd\u60a8\u5df2\u5907\u4efd\u6570\u636e\u5e93\u3002<\/li>\n<li>\u5982\u679c\u5b57\u6bb5\u662f\u5916\u952e\uff0c\u5219\u5728\u5220\u9664\u5b83\u4e4b\u524d\u5fc5\u987b\u5148\u5220\u9664\u5916\u952e\u7ea6\u675f\u3002<\/li>\n<li>\u5982\u679c\u5b57\u6bb5\u5305\u542b\u6570\u636e\uff0c\u5219\u5728\u5220\u9664\u5b83\u4e4b\u524d\u5fc5\u987b\u5148\u5220\u9664\u6570\u636e\uff0c\u5426\u5219\u64cd\u4f5c\u4f1a\u5931\u8d25\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662f\u6570\u636e\u5e93\u600e\u4e48\u5220\u9664\u5b57\u6bb5\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f7f\u7528 alter table \u8bed\u53e5\u5220\u9664\u5b57\u6bb5\uff1a\u6307\u5b9a\u8868\u540d\uff1aalter table table_name\u4f7f\u7528 drop column \u5b50\u53e5\uff1adrop column column_name\u66ff\u6362 table_name \u548c column_name \u4e3a\u5b9e\u9645\u503c\uff0c\u4f8b\u5982\uff1aalter table employees drop column phone_number \u5728 MySQL \u6570\u636e\u5e93\u4e2d\u5220\u9664\u5b57\u6bb5 \u5982\u4f55\u5220\u9664 MySQL \u8868\u4e2d\u7684\u5b57\u6bb5\uff1f \u5728 MySQL \u6570\u636e\u5e93\u4e2d\u5220\u9664\u8868\u4e2d\u7684\u5b57\u6bb5\uff0c\u53ef\u4ee5\u4f7f\u7528 ALTER TABLE \u8bed\u53e5\uff0c\u8bed\u6cd5\u5982\u4e0b\uff1a ALTER TABLE table_name DROP COLUMN column_name; \u767b\u5f55\u540e\u590d\u5236 \u5176\u4e2d\uff1a table_name \u662f\u8981\u5220\u9664\u5b57\u6bb5\u7684\u8868\u7684\u540d\u79f0\u3002 column_name \u662f\u8981\u5220\u9664\u7684\u5b57\u6bb5\u7684\u540d\u79f0\u3002 \u793a\u4f8b\uff1a ALTER TABLE employees DROP COLUMN phone_number; \u767b\u5f55\u540e\u590d\u5236 \u8fd9\u5c06\u4ece employees \u8868\u4e2d\u5220\u9664 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-6580","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6580","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=6580"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6580\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=6580"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=6580"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=6580"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}