{"id":186716,"date":"2024-11-11T08:14:20","date_gmt":"2024-11-11T00:14:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/186716\/"},"modified":"2024-11-11T08:14:21","modified_gmt":"2024-11-11T00:14:21","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e6%8a%80%e5%b7%a7%ef%bc%9a%e9%ab%98%e6%95%88%e5%88%aa%e9%99%a4%e5%a4%9a%e8%a1%8c%e6%95%b8%e6%93%9a-%e5%a6%82%e4%bd%95%e5%90%8c%e6%99%82%e5%88%aa%e9%99%a4%e4%b8%8d%e9%80%a3","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/186716\/","title":{"rendered":"\u6578\u64da\u5eab\u6280\u5de7\uff1a\u9ad8\u6548\u522a\u9664\u591a\u884c\u6578\u64da (\u5982\u4f55\u540c\u6642\u522a\u9664\u4e0d\u9023\u7e8c\u591a\u884c\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e6%8a%80%e5%b7%a7%ef%bc%9a%e9%ab%98%e6%95%88%e5%88%aa%e9%99%a4%e5%a4%9a%e8%a1%8c%e6%95%b8%e6%93%9a-%e5%a6%82%e4%bd%95%e5%90%8c%e6%99%82%e5%88%aa%e9%99%a4%e4%b8%8d%e9%80%a3-xZtwQCknQy\">\u6578\u64da\u5eab\u6280\u5de7\uff1a\u9ad8\u6548\u522a\u9664\u591a\u884c\u6578\u64da (\u5982\u4f55\u540c\u6642\u522a\u9664\u4e0d\u9023\u7e8c\u591a\u884c\u6578\u64da\u5eab)<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u522a\u9664\u591a\u884c\u6578\u64da\u662f\u4e00\u500b\u5e38\u898b\u7684\u64cd\u4f5c\u3002\u5c24\u5176\u662f\u5728\u8655\u7406\u5927\u578b\u6578\u64da\u96c6\u6642\uff0c\u5982\u4f55\u9ad8\u6548\u5730\u522a\u9664\u4e0d\u9023\u7e8c\u7684\u591a\u884c\u6578\u64da\u6210\u70ba\u4e86\u8a31\u591a\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u9700\u8981\u9762\u5c0d\u7684\u6311\u6230\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5e7e\u7a2e\u6709\u6548\u7684\u6280\u8853\uff0c\u5e6b\u52a9\u60a8\u5728\u6578\u64da\u5eab\u4e2d\u9ad8\u6548\u5730\u522a\u9664\u4e0d\u9023\u7e8c\u7684\u591a\u884c\u6578\u64da\u3002<\/p>\n<h2 id=\"1-%e4%bd%bf%e7%94%a8-sql-%e7%9a%84-in-%e5%ad%90%e5%8f%a5-xZtwQCknQy\">1. \u4f7f\u7528 SQL \u7684 IN \u5b50\u53e5<\/h2>\n<p>\u5728 SQL \u4e2d\uff0c\u4f7f\u7528 <code>DELETE<\/code> \u8a9e\u53e5\u7d50\u5408 <code>IN<\/code> \u5b50\u53e5\u662f\u4e00\u7a2e\u7c21\u55ae\u800c\u6709\u6548\u7684\u65b9\u6cd5\u4f86\u522a\u9664\u4e0d\u9023\u7e8c\u7684\u591a\u884c\u6578\u64da\u3002\u9019\u7a2e\u65b9\u6cd5\u9069\u7528\u65bc\u7576\u60a8\u77e5\u9053\u8981\u522a\u9664\u7684\u884c\u7684\u4e3b\u9375\u6216\u552f\u4e00\u6a19\u8b58\u7b26\u6642\u3002<\/p>\n<pre><code>DELETE FROM \u8868\u540d WHERE \u4e3b\u9375 IN (\u503c1, \u503c2, \u503c3, ...);\n<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u6709\u4e00\u500b\u540d\u70ba <code>users<\/code> \u7684\u8868\uff0c\u4e26\u4e14\u60f3\u8981\u522a\u9664\u7528\u6236 ID \u70ba 1\u30013 \u548c 5 \u7684\u8a18\u9304\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\uff1a<\/p>\n<pre><code>DELETE FROM users WHERE id IN (1, 3, 5);\n<\/code><\/pre>\n<h2 id=\"2-%e4%bd%bf%e7%94%a8-join-%e8%aa%9e%e5%8f%a5-xZtwQCknQy\">2. \u4f7f\u7528 JOIN \u8a9e\u53e5<\/h2>\n<p>\u7576\u9700\u8981\u6839\u64da\u53e6\u4e00\u500b\u8868\u4e2d\u7684\u689d\u4ef6\u4f86\u522a\u9664\u6578\u64da\u6642\uff0c\u4f7f\u7528 <code>JOIN<\/code> \u8a9e\u53e5\u662f\u4e00\u500b\u6709\u6548\u7684\u9078\u64c7\u3002\u9019\u7a2e\u65b9\u6cd5\u7279\u5225\u9069\u5408\u65bc\u9700\u8981\u6839\u64da\u8907\u96dc\u689d\u4ef6\u522a\u9664\u6578\u64da\u7684\u60c5\u6cc1\u3002<\/p>\n<pre><code>DELETE t1 FROM \u8868\u540d1 t1\nJOIN \u8868\u540d2 t2 ON t1.\u689d\u4ef6 = t2.\u689d\u4ef6\nWHERE t2.\u5176\u4ed6\u689d\u4ef6;\n<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5047\u8a2d\u60a8\u6709\u5169\u500b\u8868 <code>orders<\/code> \u548c <code>customers<\/code>\uff0c\u60a8\u60f3\u8981\u522a\u9664\u6240\u6709\u4f86\u81ea\u7279\u5b9a\u5ba2\u6236\u7684\u8a02\u55ae\uff1a<\/p>\n<pre><code>DELETE o FROM orders o\nJOIN customers c ON o.customer_id = c.id\nWHERE c.status = 'inactive';\n<\/code><\/pre>\n<h2 id=\"3-%e4%bd%bf%e7%94%a8%e5%ad%90%e6%9f%a5%e8%a9%a2-xZtwQCknQy\">3. \u4f7f\u7528\u5b50\u67e5\u8a62<\/h2>\n<p>\u5b50\u67e5\u8a62\u662f\u4e00\u7a2e\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5728\u522a\u9664\u64cd\u4f5c\u4e2d\u4f7f\u7528\u3002\u901a\u904e\u5728 <code>DELETE<\/code> \u8a9e\u53e5\u4e2d\u5d4c\u5165\u4e00\u500b\u67e5\u8a62\uff0c\u60a8\u53ef\u4ee5\u6839\u64da\u7279\u5b9a\u689d\u4ef6\u522a\u9664\u6578\u64da\u3002<\/p>\n<pre><code>DELETE FROM \u8868\u540d\nWHERE \u4e3b\u9375 IN (SELECT \u4e3b\u9375 FROM \u5176\u4ed6\u8868 WHERE \u689d\u4ef6);\n<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u60a8\u53ef\u4ee5\u522a\u9664\u6240\u6709\u5728\u67d0\u500b\u65e5\u671f\u4e4b\u524d\u7684\u8a02\u55ae\uff1a<\/p>\n<pre><code>DELETE FROM orders\nWHERE id IN (SELECT id FROM orders WHERE order_date &lt; '2023-01-01');\n<\/code><\/pre>\n<h2 id=\"4-%e4%bd%bf%e7%94%a8%e4%ba%8b%e5%8b%99-xZtwQCknQy\">4. \u4f7f\u7528\u4e8b\u52d9<\/h2>\n<p>\u5728\u9032\u884c\u5927\u898f\u6a21\u522a\u9664\u64cd\u4f5c\u6642\uff0c\u4f7f\u7528\u4e8b\u52d9\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002\u901a\u904e\u5c07\u522a\u9664\u64cd\u4f5c\u5305\u88f9\u5728\u4e8b\u52d9\u4e2d\uff0c\u60a8\u53ef\u4ee5\u5728\u51fa\u73fe\u932f\u8aa4\u6642\u56de\u6efe\u64cd\u4f5c\u3002<\/p>\n<pre><code>START TRANSACTION;\n\nDELETE FROM \u8868\u540d WHERE \u689d\u4ef6;\n\nCOMMIT; -- \u6216 ROLLBACK; \u6839\u64da\u9700\u8981\n<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u5982\u679c\u522a\u9664\u904e\u7a0b\u4e2d\u51fa\u73fe\u554f\u984c\uff0c\u60a8\u53ef\u4ee5\u96a8\u6642\u6062\u5fa9\u5230\u64cd\u4f5c\u4e4b\u524d\u7684\u72c0\u614b\u3002<\/p>\n<h2 id=\"5-%e6%80%a7%e8%83%bd%e8%80%83%e9%87%8f-xZtwQCknQy\">5. \u6027\u80fd\u8003\u91cf<\/h2>\n<p>\u5728\u522a\u9664\u5927\u91cf\u6578\u64da\u6642\uff0c\u6027\u80fd\u662f\u4e00\u500b\u91cd\u8981\u7684\u8003\u91cf\u56e0\u7d20\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u63d0\u9ad8\u522a\u9664\u6027\u80fd\u7684\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li>\u8003\u616e\u4f7f\u7528\u6279\u91cf\u522a\u9664\uff0c\u800c\u4e0d\u662f\u4e00\u6b21\u522a\u9664\u6240\u6709\u884c\u3002<\/li>\n<li>\u5728\u522a\u9664\u4e4b\u524d\uff0c\u78ba\u4fdd\u6709\u9069\u7576\u7684\u7d22\u5f15\uff0c\u4ee5\u52a0\u5feb\u67e5\u8a62\u901f\u5ea6\u3002<\/li>\n<li>\u5728\u9ad8\u6d41\u91cf\u7684\u6642\u9593\u6bb5\u5916\u57f7\u884c\u522a\u9664\u64cd\u4f5c\uff0c\u4ee5\u6e1b\u5c11\u5c0d\u7cfb\u7d71\u6027\u80fd\u7684\u5f71\u97ff\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-xZtwQCknQy\">\u7e3d\u7d50<\/h2>\n<p>\u9ad8\u6548\u522a\u9664\u4e0d\u9023\u7e8c\u591a\u884c\u6578\u64da\u7684\u6280\u5de7\u5c0d\u65bc\u6578\u64da\u5eab\u7ba1\u7406\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u4f7f\u7528 <code>IN<\/code> \u5b50\u53e5\u3001<code>JOIN<\/code> \u8a9e\u53e5\u3001\u5b50\u67e5\u8a62\u4ee5\u53ca\u4e8b\u52d9\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\u3002\u9019\u4e9b\u6280\u8853\u4e0d\u50c5\u80fd\u63d0\u9ad8\u64cd\u4f5c\u7684\u6548\u7387\uff0c\u9084\u80fd\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u64cd\u4f5c\uff0cServer.HK \u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u7528\u6236\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u638c\u63e1\u9ad8\u6548\u522a\u9664\u591a\u884c\u6578\u64da\u7684\u6280\u5de7\uff0c\u5b78\u7fd2\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u540c\u6642\u522a\u9664\u4e0d\u9023\u7e8c\u7684\u591a\u884c\u6578\u64da\uff0c\u63d0\u5347\u64cd\u4f5c\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-186716","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186716","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=186716"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186716\/revisions"}],"predecessor-version":[{"id":186717,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186716\/revisions\/186717"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=186716"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=186716"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=186716"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}