{"id":20356,"date":"2024-01-02T04:49:17","date_gmt":"2024-01-02T04:49:17","guid":{"rendered":"https:\/\/server.hk\/blog\/20356\/"},"modified":"2024-11-14T10:39:52","modified_gmt":"2024-11-14T02:39:52","slug":"postgresql-command-drop-function","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/20356\/","title":{"rendered":"PostgreSQL \u6307\u4ee4\uff1aDROP FUNCTION"},"content":{"rendered":"<h1 id=\"postgresql-command-drop-function-zXXrkeiugB\">PostgreSQL \u6307\u4ee4\uff1aDROP FUNCTION<\/h1>\n<p>PostgreSQL \u662f\u4e00\u500b\u529f\u80fd\u5f37\u5927\u7684\u958b\u6e90\u95dc\u806f\u5f0f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u591a\u7a2e\u7279\u6027\u548c\u529f\u80fd\u3002\u5728 PostgreSQL \u4e2d\uff0c\u4e00\u500b\u57fa\u672c\u7684\u6307\u4ee4\u662f DROP FUNCTION \u6307\u4ee4\uff0c\u8a72\u6307\u4ee4\u5141\u8a31\u7528\u6236\u5f9e\u6578\u64da\u5eab\u4e2d\u79fb\u9664\u4e00\u500b\u51fd\u6578\u3002<\/p>\n<h2 id=\"syntax-zXXrkeiugB\">\u8a9e\u6cd5<\/h2>\n<p>DROP FUNCTION \u6307\u4ee4\u7684\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>DROP FUNCTION [IF EXISTS] function_name ([argument_data_type [, ...]])\r\n<\/code><\/pre>\n<p><code>IF EXISTS<\/code> \u5b50\u53e5\u662f\u53ef\u9078\u7684\uff0c\u5b83\u5141\u8a31\u6307\u4ee4\u5373\u4f7f\u5728\u6307\u5b9a\u7684\u51fd\u6578\u4e0d\u5b58\u5728\u6642\u4ecd\u6210\u529f\u57f7\u884c\u3002<code>function_name<\/code> \u53c3\u6578\u8868\u793a\u8981\u79fb\u9664\u7684\u51fd\u6578\u540d\u7a31\u3002\u6b64\u5916\uff0c\u60a8\u53ef\u4ee5\u6307\u5b9a\u53c3\u6578\u6578\u64da\u985e\u578b\uff0c\u4ee5\u78ba\u4fdd\u5728\u5b58\u5728\u540c\u540d\u4f46\u53c3\u6578\u985e\u578b\u4e0d\u540c\u7684\u591a\u500b\u51fd\u6578\u6642\uff0c\u6b63\u78ba\u7684\u51fd\u6578\u88ab\u79fb\u9664\u3002<\/p>\n<h2 id=\"example-zXXrkeiugB\">\u7bc4\u4f8b<\/h2>\n<p>\u8b93\u6211\u5011\u8003\u616e\u4e00\u500b\u7bc4\u4f8b\uff0c\u5176\u4e2d\u6709\u4e00\u500b\u540d\u70ba <code>calculate_total<\/code> \u7684\u51fd\u6578\uff0c\u7528\u65bc\u8a08\u7b97\u7d66\u5b9a\u8a02\u55ae\u7684\u7e3d\u91d1\u984d\u3002\u8981\u79fb\u9664\u9019\u500b\u51fd\u6578\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6307\u4ee4\uff1a<\/p>\n<pre><code>DROP FUNCTION calculate_total();\r\n<\/code><\/pre>\n<p>\u6b64\u6307\u4ee4\u5c07\u5f9e\u6578\u64da\u5eab\u4e2d\u79fb\u9664 <code>calculate_total<\/code> \u51fd\u6578\u3002<\/p>\n<h2 id=\"precautions-zXXrkeiugB\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528 DROP FUNCTION \u6307\u4ee4\u6642\uff0c\u5fc5\u9808\u8b39\u614e\u5c0f\u5fc3\uff0c\u4ee5\u907f\u514d\u610f\u5916\u522a\u9664\u91cd\u8981\u51fd\u6578\u3002\u4ee5\u4e0b\u662f\u5e7e\u500b\u9700\u8b39\u8a18\u7684\u6ce8\u610f\u4e8b\u9805\uff1a<\/p>\n<ul>\n<li>\u5728\u57f7\u884c DROP FUNCTION \u6307\u4ee4\u4e4b\u524d\uff0c\u8acb\u78ba\u4fdd\u60a8\u6709\u6578\u64da\u5eab\u7684\u5099\u4efd\u3002\u9019\u6a23\u53ef\u4ee5\u5728\u9700\u8981\u6642\u6062\u5fa9\u51fd\u6578\u3002<\/li>\n<li>\u4ed4\u7d30\u6aa2\u67e5\u51fd\u6578\u540d\u7a31\u548c\u53c3\u6578\u6578\u64da\u985e\u578b\uff0c\u4ee5\u78ba\u4fdd\u60a8\u79fb\u9664\u7684\u662f\u6b63\u78ba\u7684\u51fd\u6578\u3002<\/li>\n<li>\u8003\u616e\u5728\u522a\u9664\u51fd\u6578\u4e4b\u524d\u64a4\u92b7\u5c0d\u8a72\u51fd\u6578\u6388\u4e88\u7684\u4efb\u4f55\u6b0a\u9650\uff0c\u4ee5\u9632\u6b62\u672a\u7d93\u6388\u6b0a\u7684\u8a2a\u554f\u3002<\/li>\n<\/ul>\n<h2 id=\"summary-zXXrkeiugB\">\u6458\u8981<\/h2>\n<p>PostgreSQL \u4e2d\u7684 DROP FUNCTION \u6307\u4ee4\u5141\u8a31\u7528\u6236\u5f9e\u6578\u64da\u5eab\u4e2d\u79fb\u9664\u51fd\u6578\u3002\u4f7f\u7528\u6b64\u6307\u4ee4\u6642\uff0c\u5fc5\u9808\u5c0f\u5fc3\u8b39\u614e\uff0c\u4ee5\u514d\u610f\u5916\u522a\u9664\u91cd\u8981\u51fd\u6578\u3002\u9075\u5faa\u6b63\u78ba\u7684\u8a9e\u6cd5\u4e26\u63a1\u53d6\u5fc5\u8981\u7684\u9810\u9632\u63aa\u65bd\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u60a8\u7684 PostgreSQL \u51fd\u6578\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6709\u8208\u8da3\u4e86\u89e3\u66f4\u591a\u6709\u95dc VPS \u8a17\u7ba1\u53ca\u5176\u597d\u8655\u7684\u8cc7\u8a0a\uff0c\u8acb\u8003\u616e\u63a2\u7d22 <a href=\"https:\/\/server.hk\">Server.HK<\/a>\u3002\u5229\u7528\u4e00\u6d41\u7684 VPS \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u53ef\u9760\u7684\u8a17\u7ba1\u670d\u52d9\uff0c\u4ee5\u6eff\u8db3\u60a8\u7684\u5177\u9ad4\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PostgreSQL \u6307\u4ee4\uff1aDR&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-20356","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20356","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=20356"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20356\/revisions"}],"predecessor-version":[{"id":24398,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20356\/revisions\/24398"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=20356"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=20356"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=20356"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}