{"id":6481,"date":"2024-11-14T10:12:26","date_gmt":"2024-11-14T02:12:26","guid":{"rendered":"https:\/\/fwq.ai\/blog\/6481\/"},"modified":"2024-11-14T10:12:26","modified_gmt":"2024-11-14T02:12:26","slug":"mysql%e6%80%8e%e4%b9%88%e5%88%a0%e9%99%a4%e8%a1%a8%e6%95%b0%e6%8d%ae%e5%ba%93","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/6481\/","title":{"rendered":"mysql\u600e\u4e48\u5220\u9664\u8868\u6570\u636e\u5e93"},"content":{"rendered":"<blockquote><p>\n  \u4f7f\u7528 drop table \u8bed\u53e5\u5220\u9664\u8868\uff0c\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u76f4\u63a5\u5220\u9664\uff0c\u53ea\u9700\u63d0\u4f9b\u8868\u540d\u5373\u53ef\u3002\u7ea7\u8054\u5220\u9664\u5219\u53ef\u4ee5\u901a\u8fc7 cascade \u9009\u9879\u5220\u9664\u8868\u53ca\u5176\u76f8\u5173\u8bb0\u5f55\uff0c\u800c restrict \u9009\u9879\u53ea\u5220\u9664\u8868\uff0c\u5982\u679c\u5b58\u5728\u5916\u952e\u7ea6\u675f\u5219\u4f1a\u5931\u8d25\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202408\/05\/2024080517224356649.jpg\" class=\"aligncenter\" title=\"mysql\u600e\u4e48\u5220\u9664\u8868\u6570\u636e\u5e93\u63d2\u56fe\" alt=\"mysql\u600e\u4e48\u5220\u9664\u8868\u6570\u636e\u5e93\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u7528 MySQL \u5220\u9664\u8868<\/strong><\/p>\n<p><strong>\u76f4\u63a5\u5220\u9664<\/strong><\/p>\n<p>\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u4f7f\u7528 DROP TABLE \u8bed\u53e5\uff1a<\/p>\n<pre>DROP TABLE table_name;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u6b64\u8bed\u53e5\u5c06\u7acb\u5373\u5220\u9664\u8868\u53ca\u5176\u6240\u6709\u6570\u636e\u3002<\/p>\n<p><strong>\u7ea7\u8054\u5220\u9664<\/strong><\/p>\n<p>\u5982\u679c\u8868\u6709\u4e0e\u5176\u4ed6\u8868\u7684\u5916\u952e\u5173\u7cfb\uff0c\u53ef\u4ee5\u4f7f\u7528 CASCADE \u9009\u9879\u8fdb\u884c\u7ea7\u8054\u5220\u9664\uff1a<\/p>\n<pre>DROP TABLE table_name CASCADE;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u6b64\u8bed\u53e5\u5c06\u5220\u9664\u8868\u53ca\u5176\u6240\u6709\u6570\u636e\uff0c\u8fd8\u5c06\u5220\u9664\u5176\u4ed6\u8868\u4e2d\u5f15\u7528\u8be5\u8868\u7684\u4efb\u4f55\u8bb0\u5f55\u3002<\/p>\n<p><strong>\u53d7\u9650\u5220\u9664<\/strong><\/p>\n<p>\u5982\u679c\u8868\u6709\u5916\u952e\u7ea6\u675f\uff0c\u5e76\u4e14\u4e0d\u60f3\u7ea7\u8054\u5220\u9664\u76f8\u5173\u8bb0\u5f55\uff0c\u53ef\u4ee5\u4f7f\u7528 RESTRICT \u9009\u9879\uff1a<\/p>\n<pre>DROP TABLE table_name RESTRICT;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u6b64\u8bed\u53e5\u5c06\u53ea\u5220\u9664\u8868\uff0c\u5982\u679c\u5b83\u4e0e\u5176\u4ed6\u8868\u6709\u672a\u6ee1\u8db3\u7684\u5916\u952e\u7ea6\u675f\uff0c\u5219\u4f1a\u5931\u8d25\u3002<\/p>\n<p><strong>\u5176\u4ed6\u9009\u9879<\/strong><\/p>\n<p>DROP TABLE \u8bed\u53e5\u8fd8\u652f\u6301\u4ee5\u4e0b\u9009\u9879\uff1a<\/p>\n<ul>\n<li>IF EXISTS\uff1a\u4ec5\u5728\u8868\u5b58\u5728\u65f6\u5220\u9664\u3002<\/li>\n<li>CHECK\uff1a\u5982\u679c\u8868\u5305\u542b\u4efb\u4f55\u6570\u636e\uff0c\u5219\u629b\u51fa\u9519\u8bef\u3002<\/li>\n<li>PURGE\uff1a\u91ca\u653e\u8868\u7a7a\u95f4\u3002<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b<\/strong><\/p>\n<p>\u5220\u9664\u540d\u4e3a users \u7684\u8868\uff1a<\/p>\n<pre>DROP TABLE users;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5220\u9664\u8868 orders \u5e76\u7ea7\u8054\u5220\u9664\u5176\u76f8\u5173\u8bb0\u5f55\uff1a<\/p>\n<pre>DROP TABLE orders CASCADE;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5982\u679c orders \u8868\u4e0e customers \u8868\u6709\u5916\u952e\u7ea6\u675f\uff0c\u5e76\u4e14\u4e0d\u60f3\u7ea7\u8054\u5220\u9664\uff0c\u5219\u4f7f\u7528\uff1a<\/p>\n<pre>DROP TABLE orders RESTRICT;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u600e\u4e48\u5220\u9664\u8868\u6570\u636e\u5e93\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 drop table \u8bed\u53e5\u5220\u9664\u8868\uff0c\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u76f4\u63a5\u5220\u9664\uff0c\u53ea\u9700\u63d0\u4f9b\u8868\u540d\u5373\u53ef\u3002\u7ea7\u8054\u5220\u9664\u5219\u53ef\u4ee5\u901a\u8fc7 cascade \u9009\u9879\u5220\u9664\u8868\u53ca\u5176\u76f8\u5173\u8bb0\u5f55\uff0c\u800c restrict \u9009\u9879\u53ea\u5220\u9664\u8868\uff0c\u5982\u679c\u5b58\u5728\u5916\u952e\u7ea6\u675f\u5219\u4f1a\u5931\u8d25\u3002 \u5982\u4f55\u7528 MySQL \u5220\u9664\u8868 \u76f4\u63a5\u5220\u9664 \u6700\u7b80\u5355\u7684\u65b9\u6cd5\u662f\u4f7f\u7528 DROP TABLE \u8bed\u53e5\uff1a DROP TABLE table_name; \u767b\u5f55\u540e\u590d\u5236 \u6b64\u8bed\u53e5\u5c06\u7acb\u5373\u5220\u9664\u8868\u53ca\u5176\u6240\u6709\u6570\u636e\u3002 \u7ea7\u8054\u5220\u9664 \u5982\u679c\u8868\u6709\u4e0e\u5176\u4ed6\u8868\u7684\u5916\u952e\u5173\u7cfb\uff0c\u53ef\u4ee5\u4f7f\u7528 CASCADE \u9009\u9879\u8fdb\u884c\u7ea7\u8054\u5220\u9664\uff1a DROP TABLE table_name CASCADE; \u767b\u5f55\u540e\u590d\u5236 \u6b64\u8bed\u53e5\u5c06\u5220\u9664\u8868\u53ca\u5176\u6240\u6709\u6570\u636e\uff0c\u8fd8\u5c06\u5220\u9664\u5176\u4ed6\u8868\u4e2d\u5f15\u7528\u8be5\u8868\u7684\u4efb\u4f55\u8bb0\u5f55\u3002 \u53d7\u9650\u5220\u9664 \u5982\u679c\u8868\u6709\u5916\u952e\u7ea6\u675f\uff0c\u5e76\u4e14\u4e0d\u60f3\u7ea7\u8054\u5220\u9664\u76f8\u5173\u8bb0\u5f55\uff0c\u53ef\u4ee5\u4f7f\u7528 RESTRICT \u9009\u9879\uff1a DROP TABLE table_name RESTRICT; \u767b\u5f55\u540e\u590d\u5236 \u6b64\u8bed\u53e5\u5c06\u53ea\u5220\u9664\u8868\uff0c\u5982\u679c\u5b83\u4e0e\u5176\u4ed6\u8868\u6709\u672a\u6ee1\u8db3\u7684\u5916\u952e\u7ea6\u675f\uff0c\u5219\u4f1a\u5931\u8d25\u3002 \u5176\u4ed6\u9009\u9879 DROP TABLE \u8bed\u53e5\u8fd8\u652f\u6301\u4ee5\u4e0b\u9009\u9879\uff1a IF EXISTS\uff1a\u4ec5\u5728\u8868\u5b58\u5728\u65f6\u5220\u9664\u3002 CHECK\uff1a\u5982\u679c\u8868\u5305\u542b\u4efb\u4f55\u6570\u636e\uff0c\u5219\u629b\u51fa\u9519\u8bef\u3002 PURGE\uff1a\u91ca\u653e\u8868\u7a7a\u95f4\u3002 \u793a\u4f8b \u5220\u9664\u540d\u4e3a users \u7684\u8868\uff1a DROP TABLE [&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-6481","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6481","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=6481"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/6481\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=6481"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=6481"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=6481"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}