{"id":61127,"date":"2024-10-13T08:39:12","date_gmt":"2024-10-13T00:39:12","guid":{"rendered":"https:\/\/server.hk\/cnblog\/61127\/"},"modified":"2024-10-13T08:39:12","modified_gmt":"2024-10-13T00:39:12","slug":"delete%e3%80%81drop%e3%80%81truncate%e6%9c%89%e4%bb%80%e9%ba%bc%e5%8d%80%e5%88%a5%ef%bc%9f%e4%bd%a0%e7%9f%a5%e9%81%93%e5%97%8e%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/61127\/","title":{"rendered":"Delete\u3001Drop\u3001Truncate\u6709\u4ec0\u9ebc\u5340\u5225\uff1f\u4f60\u77e5\u9053\u55ce\uff1f"},"content":{"rendered":"

Delete\u3001Drop\u3001Truncate\u6709\u4ec0\u9ebc\u5340\u5225\uff1f\u4f60\u77e5\u9053\u55ce\uff1f<\/h1>\n

\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u4e2d\uff0cDelete<\/strong>\u3001Drop<\/strong>\u548cTruncate<\/strong>\u662f\u4e09\u500b\u5e38\u898b\u7684\u64cd\u4f5c\uff0c\u96d6\u7136\u5b83\u5011\u7684\u76ee\u7684\u90fd\u662f\u7528\u4f86\u522a\u9664\u8cc7\u6599\uff0c\u4f46\u5728\u4f7f\u7528\u4e0a\u537b\u6709\u8457\u660e\u986f\u7684\u5340\u5225\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u4e09\u8005\u7684\u4e0d\u540c\u4e4b\u8655\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u5b83\u5011\u7684\u4f7f\u7528\u60c5\u5883\u3002<\/p>\n

1. Delete<\/h2>\n

Delete<\/strong>\u8a9e\u53e5\u7528\u65bc\u5f9e\u8cc7\u6599\u8868\u4e2d\u522a\u9664\u7279\u5b9a\u7684\u8cc7\u6599\u884c\u3002\u9019\u662f\u4e00\u500b\u975e\u5e38\u9748\u6d3b\u7684\u64cd\u4f5c\uff0c\u56e0\u70ba\u7528\u6236\u53ef\u4ee5\u6839\u64da\u689d\u4ef6\u9078\u64c7\u8981\u522a\u9664\u7684\u8cc7\u6599\u884c\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528Delete\u7684\u57fa\u672c\u8a9e\u6cd5\uff1a<\/p>\n

DELETE FROM \u8868\u540d WHERE \u689d\u4ef6;<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba\u201cusers\u201d\u7684\u8cc7\u6599\u8868\uff0c\u4e26\u5e0c\u671b\u522a\u9664\u7528\u6236ID\u70ba1\u7684\u8cc7\u6599\u884c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n
DELETE FROM users WHERE id = 1;<\/code><\/pre>\n
\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4f7f\u7528Delete\u8a9e\u53e5\u6642\uff0c\u8cc7\u6599\u884c\u6703\u88ab\u9010\u4e00\u522a\u9664\uff0c\u9019\u610f\u5473\u8457\u9019\u500b\u64cd\u4f5c\u53ef\u4ee5\u88ab\u56de\u6efe\uff08rollback\uff09\uff0c\u5982\u679c\u8cc7\u6599\u5eab\u652f\u63f4\u4e8b\u52d9\u7684\u8a71\u3002<\/p>\n
2. Drop<\/h2>\n
Drop<\/strong>\u8a9e\u53e5\u5247\u662f\u7528\u4f86\u522a\u9664\u6574\u500b\u8cc7\u6599\u8868\u6216\u8cc7\u6599\u5eab\u3002\u9019\u662f\u4e00\u500b\u4e0d\u53ef\u9006\u7684\u64cd\u4f5c\uff0c\u4e00\u65e6\u57f7\u884c\uff0c\u6240\u6709\u7684\u8cc7\u6599\u548c\u7d50\u69cb\u90fd\u6703\u88ab\u6c38\u4e45\u522a\u9664\u3002\u4ee5\u4e0b\u662fDrop\u7684\u57fa\u672c\u8a9e\u6cd5\uff1a<\/p>\n
DROP TABLE \u8868\u540d;<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u82e5\u8981\u522a\u9664\u540d\u70ba\u201cusers\u201d\u7684\u8cc7\u6599\u8868\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n
DROP TABLE users;<\/code><\/pre>\n
\u57f7\u884c\u9019\u500b\u64cd\u4f5c\u5f8c\uff0c\u8cc7\u6599\u8868\u53ca\u5176\u6240\u6709\u8cc7\u6599\u5c07\u7121\u6cd5\u6062\u5fa9\uff0c\u56e0\u6b64\u5728\u4f7f\u7528Drop\u6642\u5fc5\u9808\u683c\u5916\u5c0f\u5fc3\u3002<\/p>\n
3. Truncate<\/h2>\n
Truncate<\/strong>\u8a9e\u53e5\u7528\u65bc\u5feb\u901f\u522a\u9664\u8cc7\u6599\u8868\u4e2d\u7684\u6240\u6709\u8cc7\u6599\uff0c\u4f46\u4fdd\u7559\u8cc7\u6599\u8868\u7684\u7d50\u69cb\u3002\u9019\u500b\u64cd\u4f5c\u6bd4Delete\u66f4\u5feb\uff0c\u56e0\u70ba\u5b83\u4e0d\u6703\u9010\u884c\u522a\u9664\uff0c\u800c\u662f\u76f4\u63a5\u91cb\u653e\u8cc7\u6599\u9801\u3002\u4ee5\u4e0b\u662fTruncate\u7684\u57fa\u672c\u8a9e\u6cd5\uff1a<\/p>\n
TRUNCATE TABLE \u8868\u540d;<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u82e5\u8981\u6e05\u7a7a\u201cusers\u201d\u8cc7\u6599\u8868\u4e2d\u7684\u6240\u6709\u8cc7\u6599\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n
TRUNCATE TABLE users;<\/code><\/pre>\n
\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0cTruncate\u64cd\u4f5c\u540c\u6a23\u662f\u4e0d\u53ef\u9006\u7684\uff0c\u4e26\u4e14\u901a\u5e38\u7121\u6cd5\u88ab\u56de\u6efe\u3002\u6b64\u5916\uff0cTruncate\u4e0d\u6703\u89f8\u767c\u4efb\u4f55\u522a\u9664\u89f8\u767c\u5668\uff08triggers\uff09\uff0c\u9019\u4e5f\u662f\u5b83\u8207Delete\u7684\u4e00\u500b\u91cd\u8981\u5340\u5225\u3002<\/p>\n
4. \u7e3d\u7d50<\/h2>\n
\u7e3d\u7d50\u4f86\u8aaa\uff0cDelete\u3001Drop\u548cTruncate\u96d6\u7136\u90fd\u662f\u7528\u4f86\u522a\u9664\u8cc7\u6599\u7684\u64cd\u4f5c\uff0c\u4f46\u5b83\u5011\u7684\u4f7f\u7528\u60c5\u5883\u548c\u5f71\u97ff\u537b\u5927\u76f8\u5f91\u5ead\u3002Delete\u7528\u65bc\u522a\u9664\u7279\u5b9a\u8cc7\u6599\u884c\uff0c\u4e26\u4e14\u53ef\u4ee5\u56de\u6efe\uff1bDrop\u7528\u65bc\u522a\u9664\u6574\u500b\u8cc7\u6599\u8868\u6216\u8cc7\u6599\u5eab\uff0c\u4e14\u4e0d\u53ef\u6062\u5fa9\uff1b\u800cTruncate\u5247\u662f\u5feb\u901f\u6e05\u7a7a\u8cc7\u6599\u8868\u4e2d\u7684\u6240\u6709\u8cc7\u6599\uff0c\u4fdd\u7559\u5176\u7d50\u69cb\u3002\u4e86\u89e3\u9019\u4e9b\u64cd\u4f5c\u7684\u5340\u5225\uff0c\u80fd\u5e6b\u52a9\u8cc7\u6599\u5eab\u7ba1\u7406\u54e1\u5728\u65e5\u5e38\u5de5\u4f5c\u4e2d\u505a\u51fa\u66f4\u660e\u667a\u7684\u6c7a\u7b56\u3002<\/p>\n
\u5982\u679c\u60a8\u5c0d\u65bc\u8cc7\u6599\u5eab\u7ba1\u7406\u6216\u5176\u4ed6\u76f8\u95dc\u6280\u8853\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4e86\u89e3\u66f4\u591a\u8cc7\u8a0a\uff0c\u7279\u5225\u662f\u6211\u5011\u63d0\u4f9b\u7684\u9999\u6e2fVPS<\/a>\u89e3\u6c7a\u65b9\u6848\uff0c\u52a9\u60a8\u8f15\u9b06\u7ba1\u7406\u60a8\u7684\u4f3a\u670d\u5668\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e86\u89e3Delete\u3001Drop\u3001Truncate\u4e09\u8005\u7684\u5340\u5225\uff0c\u638c\u63e1\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u95dc\u9375\uff0c\u63d0\u5347\u4f60\u7684SQL\u6280\u80fd\uff01<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-61127","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61127","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=61127"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61127\/revisions"}],"predecessor-version":[{"id":61128,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61127\/revisions\/61128"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=61127"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=61127"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=61127"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}