{"id":80062,"date":"2024-10-16T13:53:18","date_gmt":"2024-10-16T05:53:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/80062\/"},"modified":"2024-10-16T13:53:18","modified_gmt":"2024-10-16T05:53:18","slug":"mysql%e6%8c%87%e4%bb%a4-truncate%ef%bc%88%e6%b8%85%e7%a9%ba%e8%a1%a8%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/80062\/","title":{"rendered":"MySQL\u6307\u4ee4: TRUNCATE\uff08\u6e05\u7a7a\u8868\uff09"},"content":{"rendered":"<h1 id=\"mysql%e6%8c%87%e4%bb%a4-truncate%ef%bc%88%e6%b8%85%e7%a9%ba%e8%a1%a8%ef%bc%89-IWrpOwinxw\">MySQL\u6307\u4ee4: TRUNCATE\uff08\u6e05\u7a7a\u8868\uff09<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u4e2d\uff0cMySQL\u662f\u4e00\u500b\u5ee3\u6cdb\u4f7f\u7528\u7684\u95dc\u806f\u5f0f\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u3002\u7576\u6211\u5011\u9700\u8981\u6e05\u7a7a\u4e00\u500b\u8cc7\u6599\u8868\u4e2d\u7684\u6240\u6709\u6578\u64da\u6642\uff0cTRUNCATE\u6307\u4ee4\u662f\u4e00\u500b\u975e\u5e38\u6709\u6548\u7684\u9078\u64c7\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eTRUNCATE\u6307\u4ee4\u7684\u529f\u80fd\u3001\u4f7f\u7528\u60c5\u5883\u53ca\u5176\u8207DELETE\u6307\u4ee4\u7684\u5340\u5225\u3002<\/p>\n<h2 id=\"truncate%e6%8c%87%e4%bb%a4%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-IWrpOwinxw\">TRUNCATE\u6307\u4ee4\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>TRUNCATE\u662f\u4e00\u500bDML\uff08\u8cc7\u6599\u64cd\u4f5c\u8a9e\u8a00\uff09\u6307\u4ee4\uff0c\u7528\u65bc\u5feb\u901f\u6e05\u7a7a\u8cc7\u6599\u8868\u4e2d\u7684\u6240\u6709\u8a18\u9304\u3002\u8207DELETE\u6307\u4ee4\u4e0d\u540c\uff0cTRUNCATE\u4e0d\u6703\u9010\u884c\u522a\u9664\u6578\u64da\uff0c\u800c\u662f\u76f4\u63a5\u522a\u9664\u6574\u500b\u8868\u7684\u6578\u64da\uff0c\u9019\u4f7f\u5f97\u5176\u57f7\u884c\u901f\u5ea6\u66f4\u5feb\u3002<\/p>\n<h2 id=\"truncate%e7%9a%84%e8%aa%9e%e6%b3%95-IWrpOwinxw\">TRUNCATE\u7684\u8a9e\u6cd5<\/h2>\n<pre><code>TRUNCATE TABLE \u8868\u540d;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba\u201cusers\u201d\u7684\u8cc7\u6599\u8868\uff0c\u60f3\u8981\u6e05\u7a7a\u5176\u4e2d\u7684\u6240\u6709\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6307\u4ee4\uff1a<\/p>\n<pre><code>TRUNCATE TABLE users;<\/code><\/pre>\n<h2 id=\"truncate%e7%9a%84%e7%89%b9%e9%bb%9e-IWrpOwinxw\">TRUNCATE\u7684\u7279\u9ede<\/h2>\n<ul>\n<li><strong>\u901f\u5ea6\u5feb\uff1a<\/strong>\u7531\u65bcTRUNCATE\u662f\u76f4\u63a5\u522a\u9664\u6574\u500b\u8868\u7684\u6578\u64da\uff0c\u56e0\u6b64\u5176\u57f7\u884c\u901f\u5ea6\u901a\u5e38\u6bd4DELETE\u5feb\u5f97\u591a\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u3002<\/li>\n<li><strong>\u7121\u6cd5\u56de\u6efe\uff1a<\/strong>TRUNCATE\u6307\u4ee4\u662f\u4e0d\u53ef\u56de\u6efe\u7684\uff0c\u9019\u610f\u5473\u8457\u4e00\u65e6\u57f7\u884c\uff0c\u5c31\u7121\u6cd5\u6062\u5fa9\u88ab\u522a\u9664\u7684\u6578\u64da\u3002\u56e0\u6b64\uff0c\u5728\u4f7f\u7528TRUNCATE\u4e4b\u524d\uff0c\u52d9\u5fc5\u78ba\u8a8d\u4e0d\u518d\u9700\u8981\u9019\u4e9b\u6578\u64da\u3002<\/li>\n<li><strong>\u91cd\u7f6e\u81ea\u589e\u8a08\u6578\u5668\uff1a<\/strong>\u5982\u679c\u8cc7\u6599\u8868\u4e2d\u6709\u81ea\u589e\u4e3b\u9375\uff0c\u4f7f\u7528TRUNCATE\u6703\u5c07\u8a08\u6578\u5668\u91cd\u7f6e\u70ba\u521d\u59cb\u503c\uff0c\u800cDELETE\u5247\u4e0d\u6703\u3002<\/li>\n<\/ul>\n<h2 id=\"truncate%e8%88%87delete%e7%9a%84%e5%8d%80%e5%88%a5-IWrpOwinxw\">TRUNCATE\u8207DELETE\u7684\u5340\u5225<\/h2>\n<p>\u96d6\u7136TRUNCATE\u548cDELETE\u90fd\u53ef\u4ee5\u7528\u4f86\u522a\u9664\u8cc7\u6599\u8868\u4e2d\u7684\u6578\u64da\uff0c\u4f46\u5b83\u5011\u4e4b\u9593\u6709\u5e7e\u500b\u91cd\u8981\u7684\u5340\u5225\uff1a<\/p>\n<ul>\n<li><strong>\u57f7\u884c\u65b9\u5f0f\uff1a<\/strong>DELETE\u9010\u884c\u522a\u9664\u6578\u64da\uff0c\u4e26\u5728\u6bcf\u6b21\u522a\u9664\u6642\u8a18\u9304\u65e5\u8a8c\uff0c\u800cTRUNCATE\u5247\u662f\u4e00\u6b21\u6027\u522a\u9664\u6240\u6709\u6578\u64da\uff0c\u4e26\u4e0d\u8a18\u9304\u6bcf\u4e00\u884c\u7684\u522a\u9664\u3002<\/li>\n<li><strong>\u6027\u80fd\uff1a<\/strong>\u7531\u65bcTRUNCATE\u4e0d\u9700\u8981\u9010\u884c\u522a\u9664\uff0c\u56e0\u6b64\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0cTRUNCATE\u7684\u6027\u80fd\u512a\u65bcDELETE\u3002<\/li>\n<li><strong>\u4f7f\u7528\u9650\u5236\uff1a<\/strong>TRUNCATE\u4e0d\u80fd\u5728\u6709\u5916\u9375\u7d04\u675f\u7684\u8868\u4e0a\u4f7f\u7528\uff0c\u800cDELETE\u5247\u53ef\u4ee5\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8truncate%e7%9a%84%e6%83%85%e5%a2%83-IWrpOwinxw\">\u4f7f\u7528TRUNCATE\u7684\u60c5\u5883<\/h2>\n<p>TRUNCATE\u6307\u4ee4\u9069\u5408\u7528\u65bc\u4ee5\u4e0b\u60c5\u5883\uff1a<\/p>\n<ul>\n<li>\u7576\u9700\u8981\u6e05\u7a7a\u4e00\u500b\u8cc7\u6599\u8868\u4ee5\u91cd\u65b0\u586b\u5145\u65b0\u6578\u64da\u6642\u3002<\/li>\n<li>\u5728\u6e2c\u8a66\u74b0\u5883\u4e2d\uff0c\u5feb\u901f\u6e05\u7a7a\u8cc7\u6599\u8868\u4ee5\u4fbf\u9032\u884c\u65b0\u7684\u6e2c\u8a66\u3002<\/li>\n<li>\u7576\u78ba\u5b9a\u4e0d\u518d\u9700\u8981\u8cc7\u6599\u8868\u4e2d\u7684\u4efb\u4f55\u6578\u64da\u6642\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-IWrpOwinxw\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528TRUNCATE\u6307\u4ee4\u6642\uff0c\u61c9\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u5728\u57f7\u884cTRUNCATE\u4e4b\u524d\uff0c\u5efa\u8b70\u5099\u4efd\u8cc7\u6599\u8868\u4e2d\u7684\u6578\u64da\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u522a\u9664\u91cd\u8981\u6578\u64da\u3002<\/li>\n<li>\u78ba\u4fdd\u5728\u57f7\u884cTRUNCATE\u6642\uff0c\u6c92\u6709\u5176\u4ed6\u7528\u6236\u6216\u61c9\u7528\u7a0b\u5e8f\u6b63\u5728\u8a2a\u554f\u8a72\u8cc7\u6599\u8868\uff0c\u4ee5\u907f\u514d\u6f5b\u5728\u7684\u6578\u64da\u4e00\u81f4\u6027\u554f\u984c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-IWrpOwinxw\">\u7e3d\u7d50<\/h2>\n<p>TRUNCATE\u6307\u4ee4\u662f\u4e00\u500b\u5f37\u5927\u4e14\u9ad8\u6548\u7684\u5de5\u5177\uff0c\u7528\u65bc\u5feb\u901f\u6e05\u7a7aMySQL\u8cc7\u6599\u8868\u4e2d\u7684\u6578\u64da\u3002\u96d6\u7136\u5176\u901f\u5ea6\u548c\u6027\u80fd\u512a\u65bcDELETE\uff0c\u4f46\u4f7f\u7528\u6642\u9700\u8b39\u614e\uff0c\u56e0\u70ba\u4e00\u65e6\u57f7\u884c\u4fbf\u7121\u6cd5\u6062\u5fa9\u6578\u64da\u3002\u4e86\u89e3TRUNCATE\u7684\u7279\u9ede\u53ca\u5176\u9069\u7528\u60c5\u5883\uff0c\u80fd\u5e6b\u52a9\u8cc7\u6599\u5eab\u7ba1\u7406\u54e1\u66f4\u6709\u6548\u5730\u7ba1\u7406\u8cc7\u6599\u5eab\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc<code><a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a><\/code>\u53ca<code><a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a><\/code>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3MySQL\u6307\u4ee4TRUNCATE\uff0c\u5feb\u901f\u6e05\u7a7a\u8868\u6570\u636e\u7684\u6709\u6548\u65b9\u6cd5\uff0c\u63d0\u5347\u6570\u636e\u5e93\u7ba1\u7406\u6548\u7387\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-80062","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/80062","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=80062"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/80062\/revisions"}],"predecessor-version":[{"id":80063,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/80062\/revisions\/80063"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=80062"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=80062"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=80062"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}