{"id":160641,"date":"2024-11-03T23:47:17","date_gmt":"2024-11-03T15:47:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/160641\/"},"modified":"2024-11-03T23:47:18","modified_gmt":"2024-11-03T15:47:18","slug":"postgresql%e6%95%99%e7%a8%8bpostgresql-delete-%e8%aa%9e%e5%8f%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/160641\/","title":{"rendered":"POSTGRESQL\u6559\u7a0bPostgreSQL DELETE \u8a9e\u53e5"},"content":{"rendered":"<h1 id=\"postgresql-delete-%e8%aa%9e%e5%8f%a5%e6%95%99%e7%a8%8b-wYEapjRXpF\">PostgreSQL DELETE \u8a9e\u53e5\u6559\u7a0b<\/h1>\n<p>PostgreSQL \u662f\u4e00\u500b\u5f37\u5927\u7684\u958b\u6e90\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002DELETE \u8a9e\u53e5\u662f PostgreSQL \u4e2d\u7528\u65bc\u522a\u9664\u6578\u64da\u7684\u57fa\u672c SQL \u8a9e\u53e5\u4e4b\u4e00\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e PostgreSQL DELETE \u8a9e\u53e5\u7684\u7528\u6cd5\u3001\u8a9e\u6cd5\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-wYEapjRXpF\">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\u4f60\u60f3\u8981\u522a\u9664\u6578\u64da\u7684\u8868\u7684\u540d\u7a31\uff0c\u800c <strong>\u689d\u4ef6<\/strong> \u662f\u7528\u4f86\u6307\u5b9a\u54ea\u4e9b\u884c\u9700\u8981\u88ab\u522a\u9664\u7684\u689d\u4ef6\u3002\u5982\u679c\u4e0d\u6307\u5b9a WHERE \u5b50\u53e5\uff0c\u5247\u6703\u522a\u9664\u8868\u4e2d\u6240\u6709\u7684\u884c\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-delete-%e8%aa%9e%e5%8f%a5%e7%9a%84%e7%af%84%e4%be%8b-wYEapjRXpF\">\u4f7f\u7528 DELETE \u8a9e\u53e5\u7684\u7bc4\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4f7f\u7528 DELETE \u8a9e\u53e5\u7684\u7bc4\u4f8b\uff1a<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b-1%ef%bc%9a%e5%88%aa%e9%99%a4%e7%89%b9%e5%ae%9a%e8%a1%8c-wYEapjRXpF\">\u7bc4\u4f8b 1\uff1a\u522a\u9664\u7279\u5b9a\u884c<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <strong>employees<\/strong> \u7684\u8868\uff0c\u7d50\u69cb\u5982\u4e0b\uff1a<\/p>\n<pre><code>CREATE TABLE employees (\n    id SERIAL PRIMARY KEY,\n    name VARCHAR(100),\n    age INT,\n    department VARCHAR(50)\n);<\/code><\/pre>\n<p>\u5982\u679c\u6211\u5011\u60f3\u522a\u9664\u540d\u70ba &#8220;John Doe&#8221; \u7684\u54e1\u5de5\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n<pre><code>DELETE FROM employees\nWHERE name = 'John Doe';<\/code><\/pre>\n<h3 id=\"%e7%af%84%e4%be%8b-2%ef%bc%9a%e5%88%aa%e9%99%a4%e5%a4%9a%e8%a1%8c-wYEapjRXpF\">\u7bc4\u4f8b 2\uff1a\u522a\u9664\u591a\u884c<\/h3>\n<p>\u5982\u679c\u6211\u5011\u60f3\u522a\u9664\u6240\u6709\u5e74\u9f61\u5927\u65bc 60 \u6b72\u7684\u54e1\u5de5\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre><code>DELETE FROM employees\nWHERE age &gt; 60;<\/code><\/pre>\n<h3 id=\"%e7%af%84%e4%be%8b-3%ef%bc%9a%e5%88%aa%e9%99%a4%e6%89%80%e6%9c%89%e8%a1%8c-wYEapjRXpF\">\u7bc4\u4f8b 3\uff1a\u522a\u9664\u6240\u6709\u884c<\/h3>\n<p>\u5982\u679c\u6211\u5011\u60f3\u522a\u9664 <strong>employees<\/strong> \u8868\u4e2d\u7684\u6240\u6709\u6578\u64da\uff0c\u53ef\u4ee5\u9019\u6a23\u505a\uff1a<\/p>\n<pre><code>DELETE FROM employees;<\/code><\/pre>\n<p>\u8acb\u6ce8\u610f\uff0c\u9019\u5c07\u522a\u9664\u8868\u4e2d\u7684\u6240\u6709\u884c\uff0c\u4f46\u8868\u7d50\u69cb\u4ecd\u7136\u5b58\u5728\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-wYEapjRXpF\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li><strong>\u4f7f\u7528 WHERE \u5b50\u53e5\uff1a<\/strong>\u5728\u4f7f\u7528 DELETE \u8a9e\u53e5\u6642\uff0c\u5efa\u8b70\u59cb\u7d42\u4f7f\u7528 WHERE \u5b50\u53e5\uff0c\u4ee5\u907f\u514d\u610f\u5916\u522a\u9664\u6240\u6709\u6578\u64da\u3002<\/li>\n<li><strong>\u4e8b\u52d9\u8655\u7406\uff1a<\/strong>\u5728\u57f7\u884c DELETE \u64cd\u4f5c\u4e4b\u524d\uff0c\u8003\u616e\u4f7f\u7528\u4e8b\u52d9\u4f86\u4fdd\u8b77\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002\u53ef\u4ee5\u4f7f\u7528 <code>BEGIN<\/code> \u548c <code>COMMIT<\/code> \u4f86\u7ba1\u7406\u4e8b\u52d9\u3002<\/li>\n<li><strong>\u522a\u9664\u5916\u9375\u7d04\u675f\uff1a<\/strong>\u5982\u679c\u8868\u4e2d\u6709\u5916\u9375\u7d04\u675f\uff0c\u522a\u9664\u64cd\u4f5c\u53ef\u80fd\u6703\u53d7\u5230\u9650\u5236\u3002\u78ba\u4fdd\u4e86\u89e3\u6578\u64da\u4e4b\u9593\u7684\u95dc\u806f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-wYEapjRXpF\">\u7d50\u8ad6<\/h2>\n<p>PostgreSQL \u7684 DELETE \u8a9e\u53e5\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u3002\u901a\u904e\u6b63\u78ba\u4f7f\u7528 DELETE \u8a9e\u53e5\uff0c\u60a8\u53ef\u4ee5\u9748\u6d3b\u5730\u522a\u9664\u4e0d\u9700\u8981\u7684\u6578\u64da\uff0c\u4fdd\u6301\u6578\u64da\u5eab\u7684\u6574\u6f54\u548c\u9ad8\u6548\u3002\u5728\u9032\u884c\u522a\u9664\u64cd\u4f5c\u6642\uff0c\u52d9\u5fc5\u5c0f\u5fc3\uff0c\u4ee5\u514d\u9020\u6210\u6578\u64da\u4e1f\u5931\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f\u6578\u64da\u5eab\u7ba1\u7406\u9084\u662f\u61c9\u7528\u7a0b\u5e8f\u90e8\u7f72\uff0c\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u4e91\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528PostgreSQL DELETE\u8a9e\u53e5\u6709\u6548\u5730\u522a\u9664\u8cc7\u6599\uff0c\u638c\u63e1\u57fa\u672c\u8a9e\u6cd5\u8207\u5be6\u7528\u7bc4\u4f8b\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6280\u80fd\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-160641","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160641","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=160641"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160641\/revisions"}],"predecessor-version":[{"id":160642,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160641\/revisions\/160642"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=160641"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=160641"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=160641"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}