{"id":182312,"date":"2024-11-09T21:23:18","date_gmt":"2024-11-09T13:23:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/182312\/"},"modified":"2024-11-09T21:23:19","modified_gmt":"2024-11-09T13:23:19","slug":"%e6%b7%b1%e5%85%a5%e7%a0%94%e7%a9%b6mysql%e5%88%aa%e9%99%a4%e5%a4%9a%e8%a1%a8%e6%95%b8%e6%93%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/182312\/","title":{"rendered":"\u6df1\u5165\u7814\u7a76MySQL\u522a\u9664\u591a\u8868\u6578\u64da"},"content":{"rendered":"<h1 id=\"%e6%b7%b1%e5%85%a5%e7%a0%94%e7%a9%b6mysql%e5%88%aa%e9%99%a4%e5%a4%9a%e8%a1%a8%e6%95%b8%e6%93%9a-OlckzQSNQR\">\u6df1\u5165\u7814\u7a76MySQL\u522a\u9664\u591a\u8868\u6578\u64da<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u522a\u9664\u6578\u64da\u662f\u4e00\u9805\u5e38\u898b\u7684\u64cd\u4f5c\uff0c\u5c24\u5176\u662f\u5728\u4f7f\u7528MySQL\u9019\u6a23\u7684\u95dc\u806f\u6578\u64da\u5eab\u7cfb\u7d71\u6642\u3002\u7576\u6d89\u53ca\u5230\u591a\u500b\u8868\u7684\u6578\u64da\u522a\u9664\u6642\uff0c\u64cd\u4f5c\u7684\u8907\u96dc\u6027\u6703\u986f\u8457\u589e\u52a0\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u5728MySQL\u4e2d\u6709\u6548\u5730\u522a\u9664\u591a\u8868\u6578\u64da\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n<h2 id=\"mysql%e4%b8%ad%e7%9a%84%e5%88%aa%e9%99%a4%e6%93%8d%e4%bd%9c-OlckzQSNQR\">MySQL\u4e2d\u7684\u522a\u9664\u64cd\u4f5c<\/h2>\n<p>\u5728MySQL\u4e2d\uff0c\u522a\u9664\u6578\u64da\u7684\u4e3b\u8981\u8a9e\u53e5\u662fDELETE\u3002\u9019\u500b\u8a9e\u53e5\u53ef\u4ee5\u7528\u4f86\u522a\u9664\u55ae\u500b\u8868\u4e2d\u7684\u6578\u64da\uff0c\u4e5f\u53ef\u4ee5\u7528\u4f86\u522a\u9664\u591a\u500b\u8868\u4e2d\u7684\u6578\u64da\u3002\u57fa\u672c\u7684DELETE\u8a9e\u53e5\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>DELETE FROM \u8868\u540d WHERE \u689d\u4ef6;<\/code><\/pre>\n<p>\u5728\u522a\u9664\u591a\u8868\u6578\u64da\u6642\uff0c\u901a\u5e38\u6703\u4f7f\u7528JOIN\u8a9e\u53e5\u4f86\u6307\u5b9a\u8981\u522a\u9664\u7684\u6578\u64da\u3002\u9019\u6a23\u53ef\u4ee5\u6839\u64da\u4e0d\u540c\u8868\u4e4b\u9593\u7684\u95dc\u806f\u4f86\u9032\u884c\u522a\u9664\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8join%e5%88%aa%e9%99%a4%e5%a4%9a%e8%a1%a8%e6%95%b8%e6%93%9a-OlckzQSNQR\">\u4f7f\u7528JOIN\u522a\u9664\u591a\u8868\u6578\u64da<\/h2>\n<p>\u7576\u9700\u8981\u6839\u64da\u591a\u500b\u8868\u7684\u689d\u4ef6\u4f86\u522a\u9664\u6578\u64da\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528JOIN\u8a9e\u53e5\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff0c\u5047\u8a2d\u6211\u5011\u6709\u5169\u500b\u8868\uff1a<strong>orders<\/strong>\u548c<strong>customers<\/strong>\uff0c\u6211\u5011\u5e0c\u671b\u522a\u9664\u6240\u6709\u4f86\u81ea\u7279\u5b9a\u5ba2\u6236\u7684\u8a02\u55ae\u3002<\/p>\n<pre><code>DELETE o FROM orders o\nJOIN customers c ON o.customer_id = c.id\nWHERE c.name = '\u7279\u5b9a\u5ba2\u6236\u540d\u7a31';<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u4f7f\u7528JOIN\u5c07<code>orders<\/code>\u8868\u548c<code>customers<\/code>\u8868\u9023\u63a5\u8d77\u4f86\uff0c\u7136\u5f8c\u6839\u64da\u5ba2\u6236\u7684\u540d\u7a31\u4f86\u522a\u9664\u76f8\u61c9\u7684\u8a02\u55ae\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e5%ad%90%e6%9f%a5%e8%a9%a2%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a-OlckzQSNQR\">\u4f7f\u7528\u5b50\u67e5\u8a62\u522a\u9664\u6578\u64da<\/h2>\n<p>\u9664\u4e86JOIN\uff0c\u9084\u53ef\u4ee5\u4f7f\u7528\u5b50\u67e5\u8a62\u4f86\u522a\u9664\u591a\u8868\u6578\u64da\u3002\u9019\u7a2e\u65b9\u6cd5\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u53ef\u80fd\u66f4\u70ba\u76f4\u89c0\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528\u5b50\u67e5\u8a62\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>DELETE FROM orders\nWHERE customer_id IN (SELECT id FROM customers WHERE name = '\u7279\u5b9a\u5ba2\u6236\u540d\u7a31');<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u9996\u5148\u67e5\u8a62\u51fa\u6240\u6709\u7b26\u5408\u689d\u4ef6\u7684\u5ba2\u6236ID\uff0c\u7136\u5f8c\u4f7f\u7528\u9019\u4e9bID\u4f86\u522a\u9664<code>orders<\/code>\u8868\u4e2d\u7684\u76f8\u61c9\u6578\u64da\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-OlckzQSNQR\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u9032\u884c\u591a\u8868\u6578\u64da\u522a\u9664\u6642\uff0c\u6709\u5e7e\u500b\u6ce8\u610f\u4e8b\u9805\u9700\u8981\u8003\u616e\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u5b8c\u6574\u6027\uff1a<\/strong>\u78ba\u4fdd\u522a\u9664\u64cd\u4f5c\u4e0d\u6703\u9055\u53cd\u6578\u64da\u5b8c\u6574\u6027\u7d04\u675f\uff0c\u4f8b\u5982\u5916\u9375\u7d04\u675f\u3002<\/li>\n<li><strong>\u5099\u4efd\u6578\u64da\uff1a<\/strong>\u5728\u57f7\u884c\u522a\u9664\u64cd\u4f5c\u4e4b\u524d\uff0c\u5efa\u8b70\u5099\u4efd\u76f8\u95dc\u6578\u64da\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u522a\u9664\u3002<\/li>\n<li><strong>\u6e2c\u8a66\u522a\u9664\u8a9e\u53e5\uff1a<\/strong>\u5728\u751f\u7522\u74b0\u5883\u4e2d\u57f7\u884c\u522a\u9664\u64cd\u4f5c\u4e4b\u524d\uff0c\u61c9\u5728\u6e2c\u8a66\u74b0\u5883\u4e2d\u9a57\u8b49\u522a\u9664\u8a9e\u53e5\u7684\u6b63\u78ba\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-OlckzQSNQR\">\u7e3d\u7d50<\/h2>\n<p>\u5728MySQL\u4e2d\u522a\u9664\u591a\u8868\u6578\u64da\u662f\u4e00\u9805\u9700\u8981\u8b39\u614e\u8655\u7406\u7684\u64cd\u4f5c\u3002\u901a\u904e\u4f7f\u7528JOIN\u6216\u5b50\u67e5\u8a62\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u6839\u64da\u591a\u500b\u8868\u7684\u689d\u4ef6\u522a\u9664\u6578\u64da\u3002\u5728\u9032\u884c\u6b64\u985e\u64cd\u4f5c\u6642\uff0c\u52d9\u5fc5\u6ce8\u610f\u6578\u64da\u5b8c\u6574\u6027\u548c\u5099\u4efd\u6578\u64da\u7684\u91cd\u8981\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u7ba1\u7406\u7684\u4f01\u696d\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u81f3\u95dc\u91cd\u8981\u3002\u82e5\u60a8\u5c0d\u65bc<code>VPS<\/code>\u3001<code>\u9999\u6e2fVPS<\/code>\u6216\u5176\u4ed6<code>\u4e91\u670d\u52a1\u5668<\/code>\u89e3\u6c7a\u65b9\u6848\u611f\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9 <a href=\"https:\/\/server.hk\">Server.HK<\/a> \u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u7814\u7a76MySQL\u522a\u9664\u591a\u8868\u6578\u64da\uff0c\u63a2\u8a0e\u4e0d\u540c\u65b9\u6cd5\u3001\u6700\u4f73\u5be6\u8e10\u53ca\u6027\u80fd\u512a\u5316\uff0c\u52a9\u60a8\u9ad8\u6548\u7ba1\u7406\u6578\u64da\u5eab\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-182312","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/182312","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=182312"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/182312\/revisions"}],"predecessor-version":[{"id":182313,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/182312\/revisions\/182313"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=182312"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=182312"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=182312"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}