{"id":175427,"date":"2024-11-08T05:47:19","date_gmt":"2024-11-07T21:47:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/175427\/"},"modified":"2024-11-08T05:47:20","modified_gmt":"2024-11-07T21:47:20","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8sql%e8%aa%9e%e5%8f%a5%e6%b8%85%e7%a9%ba%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9f-%e6%b8%85%e7%a9%ba%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84sql%e8%aa%9e%e5%8f%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/175427\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528SQL\u8a9e\u53e5\u6e05\u7a7a\u6578\u64da\u5eab\uff1f (\u6e05\u7a7a\u6578\u64da\u5eab\u7684sql\u8a9e\u53e5)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8sql%e8%aa%9e%e5%8f%a5%e6%b8%85%e7%a9%ba%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9f-%e6%b8%85%e7%a9%ba%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84sql%e8%aa%9e%e5%8f%a5-hbdByAzBht\">\u5982\u4f55\u4f7f\u7528SQL\u8a9e\u53e5\u6e05\u7a7a\u6578\u64da\u5eab\uff1f (\u6e05\u7a7a\u6578\u64da\u5eab\u7684SQL\u8a9e\u53e5)<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u6e05\u7a7a\u6578\u64da\u5eab\u662f\u4e00\u500b\u5e38\u898b\u7684\u64cd\u4f5c\uff0c\u5c24\u5176\u662f\u5728\u958b\u767c\u548c\u6e2c\u8a66\u968e\u6bb5\u3002\u9019\u7bc7\u6587\u7ae0\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528SQL\u8a9e\u53e5\u4f86\u6e05\u7a7a\u6578\u64da\u5eab\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u6ce8\u610f\u4e8b\u9805\u3002<\/p>\n<h2 id=\"%e6%b8%85%e7%a9%ba%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-hbdByAzBht\">\u6e05\u7a7a\u6578\u64da\u5eab\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u6e05\u7a7a\u6578\u64da\u5eab\u7684\u64cd\u4f5c\u901a\u5e38\u662f\u6307\u522a\u9664\u6578\u64da\u5eab\u4e2d\u7684\u6240\u6709\u6578\u64da\uff0c\u800c\u4e0d\u5f71\u97ff\u6578\u64da\u5eab\u7684\u7d50\u69cb\u3002\u9019\u610f\u5473\u8457\u6240\u6709\u7684\u8868\u683c\u3001\u7d22\u5f15\u548c\u5176\u4ed6\u6578\u64da\u5eab\u5c0d\u8c61\u5c07\u4fdd\u6301\u4e0d\u8b8a\uff0c\u4f46\u5176\u5167\u5bb9\u5c07\u88ab\u6e05\u7a7a\u3002\u9019\u5728\u9700\u8981\u91cd\u7f6e\u6578\u64da\u5eab\u72c0\u614b\u6642\u975e\u5e38\u6709\u7528\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8sql%e8%aa%9e%e5%8f%a5%e6%b8%85%e7%a9%ba%e6%95%b8%e6%93%9a%e5%ba%ab-hbdByAzBht\">\u4f7f\u7528SQL\u8a9e\u53e5\u6e05\u7a7a\u6578\u64da\u5eab<\/h2>\n<p>\u5728SQL\u4e2d\uff0c\u6709\u5e7e\u7a2e\u65b9\u6cd5\u53ef\u4ee5\u6e05\u7a7a\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\u3002\u6700\u5e38\u898b\u7684\u65b9\u6cd5\u662f\u4f7f\u7528 <code>TRUNCATE<\/code> \u548c <code>DELETE<\/code> \u8a9e\u53e5\u3002<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8truncate%e8%aa%9e%e5%8f%a5-hbdByAzBht\">1. \u4f7f\u7528TRUNCATE\u8a9e\u53e5<\/h3>\n<p><code>TRUNCATE<\/code> \u662f\u4e00\u500b\u5feb\u901f\u4e14\u9ad8\u6548\u7684\u65b9\u5f0f\u4f86\u6e05\u7a7a\u8868\u683c\u4e2d\u7684\u6240\u6709\u6578\u64da\u3002\u5b83\u6703\u522a\u9664\u6240\u6709\u884c\uff0c\u4f46\u4e0d\u6703\u8a18\u9304\u6bcf\u4e00\u884c\u7684\u522a\u9664\u64cd\u4f5c\uff0c\u56e0\u6b64\u901f\u5ea6\u6bd4 <code>DELETE<\/code> \u66f4\u5feb\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528 <code>TRUNCATE<\/code> \u7684\u57fa\u672c\u8a9e\u6cd5\uff1a<\/p>\n<pre><code>TRUNCATE TABLE \u8868\u540d;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>users<\/code> \u7684\u8868\u683c\uff0c\u60f3\u8981\u6e05\u7a7a\u5b83\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n<pre><code>TRUNCATE TABLE users;<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8delete%e8%aa%9e%e5%8f%a5-hbdByAzBht\">2. \u4f7f\u7528DELETE\u8a9e\u53e5<\/h3>\n<p>\u5982\u679c\u9700\u8981\u66f4\u7d30\u7dfb\u7684\u63a7\u5236\uff0c\u6216\u8005\u5e0c\u671b\u5728\u522a\u9664\u6578\u64da\u6642\u89f8\u767c\u89f8\u767c\u5668\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>DELETE<\/code> \u8a9e\u53e5\u3002\u9019\u7a2e\u65b9\u6cd5\u6703\u9010\u884c\u522a\u9664\u6578\u64da\uff0c\u4e26\u4e14\u53ef\u4ee5\u9078\u64c7\u6027\u5730\u522a\u9664\u7b26\u5408\u7279\u5b9a\u689d\u4ef6\u7684\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528 <code>DELETE<\/code> \u7684\u57fa\u672c\u8a9e\u6cd5\uff1a<\/p>\n<pre><code>DELETE FROM \u8868\u540d;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u6e05\u7a7a <code>users<\/code> \u8868\u683c\u7684\u8a9e\u53e5\u5982\u4e0b\uff1a<\/p>\n<pre><code>DELETE FROM users;<\/code><\/pre>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4f7f\u7528 <code>DELETE<\/code> \u8a9e\u53e5\u6642\uff0c\u6578\u64da\u5eab\u6703\u8a18\u9304\u6bcf\u4e00\u884c\u7684\u522a\u9664\u64cd\u4f5c\uff0c\u56e0\u6b64\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0c\u9019\u7a2e\u65b9\u6cd5\u7684\u6027\u80fd\u53ef\u80fd\u6703\u8f03\u5dee\u3002<\/p>\n<h2 id=\"%e6%b8%85%e7%a9%ba%e6%95%b4%e5%80%8b%e6%95%b8%e6%93%9a%e5%ba%ab-hbdByAzBht\">\u6e05\u7a7a\u6574\u500b\u6578\u64da\u5eab<\/h2>\n<p>\u5982\u679c\u9700\u8981\u6e05\u7a7a\u6574\u500b\u6578\u64da\u5eab\u4e2d\u7684\u6240\u6709\u8868\u683c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9a5f\uff1a<\/p>\n<ol>\n<li>\u9996\u5148\uff0c\u7372\u53d6\u6578\u64da\u5eab\u4e2d\u6240\u6709\u8868\u683c\u7684\u540d\u7a31\u3002<\/li>\n<li>\u7136\u5f8c\uff0c\u5c0d\u6bcf\u500b\u8868\u683c\u57f7\u884c <code>TRUNCATE<\/code> \u6216 <code>DELETE<\/code> \u64cd\u4f5c\u3002<\/li>\n<\/ol>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528 SQL \u8a9e\u53e5\u6e05\u7a7a\u6574\u500b\u6578\u64da\u5eab\uff1a<\/p>\n<pre><code>\nSET FOREIGN_KEY_CHECKS = 0;  -- \u7981\u7528\u5916\u9375\u6aa2\u67e5\nSELECT CONCAT('TRUNCATE TABLE ', table_name, ';') \nFROM information_schema.tables \nWHERE table_schema = '\u6578\u64da\u5eab\u540d\u7a31';\nSET FOREIGN_KEY_CHECKS = 1;  -- \u91cd\u65b0\u555f\u7528\u5916\u9375\u6aa2\u67e5\n<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u6703\u751f\u6210\u4e00\u7cfb\u5217\u7684 <code>TRUNCATE<\/code> \u8a9e\u53e5\uff0c\u7136\u5f8c\u53ef\u4ee5\u9010\u4e00\u57f7\u884c\u4f86\u6e05\u7a7a\u6240\u6709\u8868\u683c\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-hbdByAzBht\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li>\u5728\u57f7\u884c\u6e05\u7a7a\u64cd\u4f5c\u4e4b\u524d\uff0c\u52d9\u5fc5\u5099\u4efd\u6578\u64da\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u4e1f\u5931\u91cd\u8981\u4fe1\u606f\u3002<\/li>\n<li>\u4f7f\u7528 <code>TRUNCATE<\/code> \u6642\uff0c\u7121\u6cd5\u4f7f\u7528 <code>WHERE<\/code> \u5b50\u53e5\u4f86\u9650\u5236\u522a\u9664\u7684\u884c\u3002<\/li>\n<li>\u6e05\u7a7a\u6578\u64da\u5eab\u5f8c\uff0c\u67d0\u4e9b\u6578\u64da\u5eab\u7cfb\u7d71\u53ef\u80fd\u6703\u81ea\u52d5\u91cd\u7f6e\u81ea\u589e\u5217\u7684\u8a08\u6578\u5668\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-hbdByAzBht\">\u7e3d\u7d50<\/h2>\n<p>\u6e05\u7a7a\u6578\u64da\u5eab\u662f\u4e00\u500b\u91cd\u8981\u7684\u64cd\u4f5c\uff0c\u7121\u8ad6\u662f\u5728\u958b\u767c\u9084\u662f\u6e2c\u8a66\u74b0\u5883\u4e2d\u3002\u901a\u904e\u4f7f\u7528 <code>TRUNCATE<\/code> \u548c <code>DELETE<\/code> \u8a9e\u53e5\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\u3002\u8acb\u52d9\u5fc5\u5728\u9032\u884c\u6b64\u985e\u64cd\u4f5c\u4e4b\u524d\u505a\u597d\u5099\u4efd\uff0c\u4ee5\u9632\u6b62\u6578\u64da\u4e1f\u5931\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u4e91\u4f3a\u670d\u5668<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528SQL\u8a9e\u53e5\u6e05\u7a7a\u6578\u64da\u5eab\uff0c\u5305\u62ecDROP\u548cTRUNCATE\u547d\u4ee4\u7684\u6b63\u78ba\u7528\u6cd5\uff0c\u78ba\u4fdd\u6578\u64da\u5b89\u5168\u8207\u5b8c\u6574\u6027\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-175427","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175427","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=175427"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175427\/revisions"}],"predecessor-version":[{"id":175428,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175427\/revisions\/175428"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=175427"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=175427"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=175427"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}