{"id":168473,"date":"2024-11-06T12:40:20","date_gmt":"2024-11-06T04:40:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/168473\/"},"modified":"2024-11-06T12:40:21","modified_gmt":"2024-11-06T04:40:21","slug":"sql-%e8%aa%9e%e5%8f%a5%e4%b8%ad%e5%88%aa%e9%99%a4%e8%aa%9e%e5%8f%a5-delete-%e7%9a%84%e8%aa%aa%e6%98%8e","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/168473\/","title":{"rendered":"SQL \u8a9e\u53e5\u4e2d\u522a\u9664\u8a9e\u53e5 DELETE \u7684\u8aaa\u660e"},"content":{"rendered":"<h1 id=\"sql-%e8%aa%9e%e5%8f%a5%e4%b8%ad%e5%88%aa%e9%99%a4%e8%aa%9e%e5%8f%a5-delete-%e7%9a%84%e8%aa%aa%e6%98%8e-oKAQyOlENq\">SQL \u8a9e\u53e5\u4e2d\u522a\u9664\u8a9e\u53e5 DELETE \u7684\u8aaa\u660e<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0cSQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u662f\u4e00\u7a2e\u7528\u65bc\u7ba1\u7406\u548c\u64cd\u4f5c\u8cc7\u6599\u7684\u6a19\u6e96\u8a9e\u8a00\u3002\u7576\u6211\u5011\u9700\u8981\u5f9e\u8cc7\u6599\u8868\u4e2d\u522a\u9664\u7279\u5b9a\u7684\u8cc7\u6599\u6642\uff0cDELETE \u8a9e\u53e5\u4fbf\u662f\u6211\u5011\u7684\u4e3b\u8981\u5de5\u5177\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e DELETE \u8a9e\u53e5\u7684\u7528\u6cd5\u3001\u8a9e\u6cd5\u7d50\u69cb\u53ca\u5176\u6ce8\u610f\u4e8b\u9805\u3002<\/p>\n<h2 id=\"delete-%e8%aa%9e%e5%8f%a5%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-oKAQyOlENq\">DELETE \u8a9e\u53e5\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>DELETE \u8a9e\u53e5\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>DELETE FROM \u8868\u540d\nWHERE \u689d\u4ef6;<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<strong>\u8868\u540d<\/strong>\u662f\u6307\u6211\u5011\u8981\u522a\u9664\u8cc7\u6599\u7684\u8cc7\u6599\u8868\u540d\u7a31\uff0c\u800c<strong>\u689d\u4ef6<\/strong>\u5247\u662f\u7528\u4f86\u6307\u5b9a\u54ea\u4e9b\u8cc7\u6599\u9700\u8981\u88ab\u522a\u9664\u7684\u689d\u4ef6\u3002\u82e5\u4e0d\u52a0\u4e0a WHERE \u5b50\u53e5\uff0c\u5247\u6574\u500b\u8cc7\u6599\u8868\u7684\u8cc7\u6599\u90fd\u6703\u88ab\u522a\u9664\uff0c\u9019\u662f\u975e\u5e38\u5371\u96aa\u7684\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e7%af%84%e4%be%8b-oKAQyOlENq\">\u4f7f\u7528\u7bc4\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u7bc4\u4f8b\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <strong>customers<\/strong> \u7684\u8cc7\u6599\u8868\uff0c\u88e1\u9762\u5b58\u653e\u8457\u5ba2\u6236\u7684\u8cc7\u6599\uff1a<\/p>\n<pre><code>DELETE FROM customers\nWHERE customer_id = 1;<\/code><\/pre>\n<p>\u4e0a\u8ff0\u8a9e\u53e5\u5c07\u6703\u522a\u9664 <strong>customer_id<\/strong> \u70ba 1 \u7684\u5ba2\u6236\u8cc7\u6599\u3002\u5982\u679c\u6211\u5011\u60f3\u8981\u522a\u9664\u6240\u6709\u4f86\u81ea\u67d0\u500b\u57ce\u5e02\u7684\u5ba2\u6236\u8cc7\u6599\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n<pre><code>DELETE FROM customers\nWHERE city = 'Hong Kong';<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-oKAQyOlENq\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li><strong>\u5c0f\u5fc3\u4f7f\u7528 WHERE \u5b50\u53e5\uff1a<\/strong>\u5982\u524d\u6240\u8ff0\uff0c\u82e5\u4e0d\u52a0\u4e0a WHERE \u5b50\u53e5\uff0c\u5c07\u6703\u522a\u9664\u6574\u500b\u8cc7\u6599\u8868\u7684\u6240\u6709\u8cc7\u6599\uff0c\u9019\u53ef\u80fd\u6703\u5c0e\u81f4\u4e0d\u53ef\u9006\u7684\u640d\u5931\u3002<\/li>\n<li><strong>\u4f7f\u7528\u4e8b\u52d9\u63a7\u5236\uff1a<\/strong>\u5728\u57f7\u884c DELETE \u64cd\u4f5c\u4e4b\u524d\uff0c\u5efa\u8b70\u4f7f\u7528\u4e8b\u52d9\u63a7\u5236\uff08\u5982 BEGIN TRANSACTION \u548c COMMIT\uff09\u4f86\u78ba\u4fdd\u8cc7\u6599\u7684\u5b89\u5168\u6027\u3002<\/li>\n<li><strong>\u5099\u4efd\u8cc7\u6599\uff1a<\/strong>\u5728\u9032\u884c\u5927\u898f\u6a21\u522a\u9664\u64cd\u4f5c\u4e4b\u524d\uff0c\u52d9\u5fc5\u5099\u4efd\u8cc7\u6599\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u522a\u9664\u91cd\u8981\u8cc7\u6599\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%88%aa%e9%99%a4%e5%a4%9a%e6%a2%9d%e8%a8%98%e9%8c%84-oKAQyOlENq\">\u522a\u9664\u591a\u689d\u8a18\u9304<\/h2>\n<p>DELETE \u8a9e\u53e5\u4e5f\u53ef\u4ee5\u7528\u4f86\u522a\u9664\u591a\u689d\u8a18\u9304\uff0c\u53ea\u9700\u5728 WHERE \u5b50\u53e5\u4e2d\u6307\u5b9a\u591a\u500b\u689d\u4ef6\u3002\u4f8b\u5982\uff0c\u82e5\u8981\u522a\u9664\u4f86\u81ea\u300c\u9999\u6e2f\u300d\u548c\u300c\u65b0\u52a0\u5761\u300d\u7684\u5ba2\u6236\u8cc7\u6599\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n<pre><code>DELETE FROM customers\nWHERE city IN ('Hong Kong', 'Singapore');<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-oKAQyOlENq\">\u7d50\u8ad6<\/h2>\n<p>DELETE \u8a9e\u53e5\u662f SQL \u4e2d\u4e00\u500b\u975e\u5e38\u91cd\u8981\u7684\u529f\u80fd\uff0c\u80fd\u5920\u6709\u6548\u5730\u7ba1\u7406\u548c\u7dad\u8b77\u8cc7\u6599\u5eab\u4e2d\u7684\u8cc7\u6599\u3002\u7136\u800c\uff0c\u4f7f\u7528 DELETE \u8a9e\u53e5\u6642\u5fc5\u9808\u8b39\u614e\uff0c\u4ee5\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u8cc7\u6599\u640d\u5931\u3002\u4e86\u89e3\u5176\u8a9e\u6cd5\u548c\u4f7f\u7528\u7bc4\u4f8b\uff0c\u4e26\u9075\u5faa\u6700\u4f73\u5be6\u8e10\uff0c\u5c07\u6709\u52a9\u65bc\u78ba\u4fdd\u8cc7\u6599\u7684\u5b89\u5168\u6027\u548c\u5b8c\u6574\u6027\u3002<\/p>\n<p>\u5982\u9700\u9032\u4e00\u6b65\u4e86\u89e3\u8cc7\u6599\u5eab\u7ba1\u7406\u53ca\u76f8\u95dc\u6280\u8853\uff0c\u60a8\u53ef\u4ee5\u8003\u616e\u4f7f\u7528 <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u670d\u52d9\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u8cc7\u6599\u5eab\u63d0\u4f9b\u7a69\u5b9a\u7684\u904b\u884c\u74b0\u5883\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3 SQL \u8a9e\u53e5\u4e2d\u522a\u9664\u8a9e\u53e5 DELETE \u7684\u7528\u6cd5\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u5730\u5f9e\u8cc7\u6599\u8868\u4e2d\u79fb\u9664\u4e0d\u9700\u8981\u7684\u6578\u64da\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-168473","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168473","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=168473"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168473\/revisions"}],"predecessor-version":[{"id":168474,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168473\/revisions\/168474"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=168473"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=168473"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=168473"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}