{"id":158185,"date":"2024-11-03T00:43:06","date_gmt":"2024-11-02T16:43:06","guid":{"rendered":"https:\/\/server.hk\/cnblog\/158185\/"},"modified":"2024-11-03T00:43:07","modified_gmt":"2024-11-02T16:43:07","slug":"%e9%ab%98%e6%95%88%e6%b8%85%e7%90%86%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9a%e5%a4%9a%e8%a1%8c%e8%aa%9e%e5%8f%a5%e5%88%aa%e9%99%a4%e6%8a%80%e5%b7%a7%ef%bc%88%e6%95%b8%e6%93%9a%e5%ba%ab%e5%88%aa%e9%99%a4","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/158185\/","title":{"rendered":"\u9ad8\u6548\u6e05\u7406\u6578\u64da\u5eab\uff1a\u591a\u884c\u8a9e\u53e5\u522a\u9664\u6280\u5de7\uff08\u6578\u64da\u5eab\u522a\u9664\u591a\u884c\u8a9e\u53e5\uff09"},"content":{"rendered":"<h1 id=\"%e9%ab%98%e6%95%88%e6%b8%85%e7%90%86%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9a%e5%a4%9a%e8%a1%8c%e8%aa%9e%e5%8f%a5%e5%88%aa%e9%99%a4%e6%8a%80%e5%b7%a7%ef%bc%88%e6%95%b8%e6%93%9a%e5%ba%ab%e5%88%aa%e9%99%a4-yDobwiyFOv\">\u9ad8\u6548\u6e05\u7406\u6578\u64da\u5eab\uff1a\u591a\u884c\u8a9e\u53e5\u522a\u9664\u6280\u5de7\uff08\u6578\u64da\u5eab\u522a\u9664\u591a\u884c\u8a9e\u53e5\uff09<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u6578\u64da\u7684\u6e05\u7406\u548c\u7dad\u8b77\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u96a8\u8457\u6642\u9593\u7684\u63a8\u79fb\uff0c\u6578\u64da\u5eab\u4e2d\u53ef\u80fd\u6703\u7a4d\u7d2f\u5927\u91cf\u4e0d\u5fc5\u8981\u7684\u6578\u64da\uff0c\u9019\u4e0d\u50c5\u6703\u4f54\u7528\u5b58\u5132\u7a7a\u9593\uff0c\u9084\u53ef\u80fd\u5f71\u97ff\u67e5\u8a62\u6027\u80fd\u3002\u56e0\u6b64\uff0c\u638c\u63e1\u9ad8\u6548\u7684\u6578\u64da\u522a\u9664\u6280\u5de7\uff0c\u7279\u5225\u662f\u591a\u884c\u8a9e\u53e5\u522a\u9664\uff0c\u5c0d\u65bc\u6578\u64da\u5eab\u7684\u5065\u5eb7\u904b\u884c\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e6%b8%85%e7%90%86%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%9f-yDobwiyFOv\">\u70ba\u4ec0\u9ebc\u9700\u8981\u6e05\u7406\u6578\u64da\u5eab\uff1f<\/h2>\n<p>\u6578\u64da\u5eab\u6e05\u7406\u7684\u4e3b\u8981\u539f\u56e0\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u63d0\u5347\u6027\u80fd\uff1a<\/strong>\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u52a0\uff0c\u67e5\u8a62\u901f\u5ea6\u53ef\u80fd\u6703\u8b8a\u6162\u3002\u5b9a\u671f\u6e05\u7406\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002<\/li>\n<li><strong>\u7bc0\u7701\u5b58\u5132\u7a7a\u9593\uff1a<\/strong>\u522a\u9664\u5197\u9918\u6578\u64da\u53ef\u4ee5\u91cb\u653e\u5b58\u5132\u7a7a\u9593\uff0c\u964d\u4f4e\u904b\u71df\u6210\u672c\u3002<\/li>\n<li><strong>\u6578\u64da\u4e00\u81f4\u6027\uff1a<\/strong>\u4fdd\u6301\u6578\u64da\u7684\u6e96\u78ba\u6027\u548c\u4e00\u81f4\u6027\uff0c\u907f\u514d\u56e0\u904e\u6642\u6216\u932f\u8aa4\u7684\u6578\u64da\u5c0e\u81f4\u7684\u6c7a\u7b56\u5931\u8aa4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a4%9a%e8%a1%8c%e8%aa%9e%e5%8f%a5%e5%88%aa%e9%99%a4%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-yDobwiyFOv\">\u591a\u884c\u8a9e\u53e5\u522a\u9664\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u5728 SQL \u4e2d\uff0c\u522a\u9664\u6578\u64da\u7684\u57fa\u672c\u8a9e\u6cd5\u662f\u4f7f\u7528 DELETE \u8a9e\u53e5\u3002\u5c0d\u65bc\u9700\u8981\u522a\u9664\u591a\u884c\u6578\u64da\u7684\u60c5\u6cc1\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u7a2e\u65b9\u6cd5\u4f86\u5be6\u73fe\u3002\u4ee5\u4e0b\u662f\u5e7e\u7a2e\u5e38\u898b\u7684\u522a\u9664\u6280\u5de7\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8-where-%e5%ad%90%e5%8f%a5-yDobwiyFOv\">1. \u4f7f\u7528 WHERE \u5b50\u53e5<\/h3>\n<p>\u6700\u5e38\u898b\u7684\u522a\u9664\u65b9\u6cd5\u662f\u4f7f\u7528 WHERE \u5b50\u53e5\u4f86\u6307\u5b9a\u8981\u522a\u9664\u7684\u884c\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>DELETE FROM \u8868\u540d WHERE \u689d\u4ef6;<\/code><\/pre>\n<p>\u5982\u679c\u9700\u8981\u522a\u9664\u591a\u884c\uff0c\u53ef\u4ee5\u4f7f\u7528 AND \u6216 OR \u4f86\u7d44\u5408\u591a\u500b\u689d\u4ef6\uff1a<\/p>\n<pre><code>DELETE FROM \u8868\u540d WHERE \u689d\u4ef61 OR \u689d\u4ef62;<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8-in-%e5%ad%90%e5%8f%a5-yDobwiyFOv\">2. \u4f7f\u7528 IN \u5b50\u53e5<\/h3>\n<p>\u7576\u9700\u8981\u522a\u9664\u591a\u500b\u7279\u5b9a\u503c\u7684\u884c\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528 IN \u5b50\u53e5\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>DELETE FROM \u8868\u540d WHERE \u5217\u540d IN (\u503c1, \u503c2, \u503c3);<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u4e00\u6b21\u6027\u522a\u9664\u591a\u884c\uff0c\u7c21\u5316\u8a9e\u53e5\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8-join-%e8%aa%9e%e5%8f%a5-yDobwiyFOv\">3. \u4f7f\u7528 JOIN \u8a9e\u53e5<\/h3>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u6839\u64da\u53e6\u4e00\u500b\u8868\u7684\u6578\u64da\u4f86\u522a\u9664\u884c\u3002\u9019\u6642\u53ef\u4ee5\u4f7f\u7528 JOIN \u8a9e\u53e5\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>DELETE t1 FROM \u88681 t1\nJOIN \u88682 t2 ON t1.id = t2.id\nWHERE t2 \u689d\u4ef6;<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u6839\u64da\u88682\u7684\u689d\u4ef6\u522a\u9664\u88681\u4e2d\u7684\u591a\u884c\u6578\u64da\u3002<\/p>\n<h3 id=\"4-%e4%bd%bf%e7%94%a8%e5%ad%90%e6%9f%a5%e8%a9%a2-yDobwiyFOv\">4. \u4f7f\u7528\u5b50\u67e5\u8a62<\/h3>\n<p>\u5b50\u67e5\u8a62\u4e5f\u662f\u4e00\u7a2e\u6709\u6548\u7684\u522a\u9664\u65b9\u6cd5\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>DELETE FROM \u8868\u540d WHERE \u5217\u540d IN (SELECT \u5217\u540d FROM \u5176\u4ed6\u8868 WHERE \u689d\u4ef6);<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u6839\u64da\u5176\u4ed6\u8868\u7684\u6578\u64da\u4f86\u522a\u9664\u7576\u524d\u8868\u4e2d\u7684\u591a\u884c\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-yDobwiyFOv\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u9032\u884c\u591a\u884c\u522a\u9664\u64cd\u4f5c\u6642\uff0c\u61c9\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u5099\u4efd\u6578\u64da\uff1a<\/strong>\u5728\u57f7\u884c\u522a\u9664\u64cd\u4f5c\u4e4b\u524d\uff0c\u5efa\u8b70\u5148\u5099\u4efd\u6578\u64da\uff0c\u4ee5\u9632\u6b62\u8aa4\u522a\u9664\u3002<\/li>\n<li><strong>\u6e2c\u8a66\u67e5\u8a62\uff1a<\/strong>\u5728\u57f7\u884c\u522a\u9664\u4e4b\u524d\uff0c\u53ef\u4ee5\u5148\u57f7\u884c SELECT \u67e5\u8a62\u4f86\u78ba\u8a8d\u5c07\u8981\u522a\u9664\u7684\u6578\u64da\u3002<\/li>\n<li><strong>\u4f7f\u7528\u4e8b\u52d9\uff1a<\/strong>\u5728\u652f\u6301\u4e8b\u52d9\u7684\u6578\u64da\u5eab\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e8b\u52d9\u4f86\u78ba\u4fdd\u522a\u9664\u64cd\u4f5c\u7684\u539f\u5b50\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-yDobwiyFOv\">\u7e3d\u7d50<\/h2>\n<p>\u9ad8\u6548\u6e05\u7406\u6578\u64da\u5eab\u662f\u7dad\u8b77\u6578\u64da\u5eab\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u7684\u95dc\u9375\u3002\u901a\u904e\u638c\u63e1\u591a\u884c\u8a9e\u53e5\u522a\u9664\u6280\u5de7\uff0c\u60a8\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\uff0c\u63d0\u5347\u7cfb\u7d71\u7684\u6574\u9ad4\u6548\u7387\u3002\u7121\u8ad6\u662f\u4f7f\u7528 WHERE \u5b50\u53e5\u3001IN \u5b50\u53e5\u3001JOIN \u9084\u662f\u5b50\u67e5\u8a62\uff0c\u9078\u64c7\u5408\u9069\u7684\u65b9\u6cd5\u90fd\u80fd\u5e6b\u52a9\u60a8\u9054\u5230\u6e05\u7406\u7684\u76ee\u7684\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\u7ba1\u7406\uff0cServer.HK \u63d0\u4f9b\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\u53ef\u9760\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u638c\u63e1\u9ad8\u6548\u6e05\u7406\u6578\u64da\u5eab\u7684\u591a\u884c\u8a9e\u53e5\u522a\u9664\u6280\u5de7\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u7c21\u5316\u64cd\u4f5c\u6d41\u7a0b\uff0c\u78ba\u4fdd\u6578\u64da\u6e96\u78ba\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-158185","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158185","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=158185"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158185\/revisions"}],"predecessor-version":[{"id":158186,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/158185\/revisions\/158186"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=158185"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=158185"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=158185"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}