{"id":178872,"date":"2024-11-08T21:36:19","date_gmt":"2024-11-08T13:36:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/178872\/"},"modified":"2024-11-08T21:36:20","modified_gmt":"2024-11-08T13:36:20","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9postgresql%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc%ef%bc%9a2f005-function_executed_no_return_statement%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/178872\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc\uff1a2F005 &#8211; function_executed_no_return_statement\uff1f"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9postgresql%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc%ef%bc%9a2f005-function_executed_no_return_statement-HtEtpjcqjj\">\u5982\u4f55\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc\uff1a2F005 &#8211; function_executed_no_return_statement<\/h1>\n<p>\u5728\u4f7f\u7528PostgreSQL\u9032\u884c\u6578\u64da\u5eab\u958b\u767c\u6642\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\u4ee3\u78bc\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u932f\u8aa4\u4ee3\u78bc2F005\uff0c\u8a72\u932f\u8aa4\u7684\u63cf\u8ff0\u70ba\u201cfunction_executed_no_return_statement\u201d\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u767c\u751f\u5728\u7528\u6236\u5b9a\u7fa9\u7684\u51fd\u6578\u4e2d\uff0c\u7576\u51fd\u6578\u88ab\u57f7\u884c\u4f46\u6c92\u6709\u8fd4\u56de\u4efb\u4f55\u503c\u6642\uff0c\u5c31\u6703\u5f15\u767c\u6b64\u932f\u8aa4\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u500b\u932f\u8aa4\u7684\u539f\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e5%8e%9f%e5%9b%a0%e5%88%86%e6%9e%90-HtEtpjcqjj\">\u932f\u8aa4\u539f\u56e0\u5206\u6790<\/h2>\n<p>PostgreSQL\u4e2d\u7684\u51fd\u6578\u53ef\u4ee5\u8fd4\u56de\u591a\u7a2e\u6578\u64da\u985e\u578b\uff0c\u5305\u62ec\u6574\u6578\u3001\u6587\u672c\u3001\u8868\u683c\u7b49\u3002\u7576\u4f60\u5275\u5efa\u4e00\u500b\u51fd\u6578\u6642\uff0c\u5fc5\u9808\u660e\u78ba\u6307\u5b9a\u5176\u8fd4\u56de\u985e\u578b\u3002\u5982\u679c\u51fd\u6578\u7684\u908f\u8f2f\u8def\u5f91\u4e2d\u6c92\u6709\u8fd4\u56de\u8a9e\u53e5\uff0c\u5247\u5728\u57f7\u884c\u8a72\u51fd\u6578\u6642\u5c31\u6703\u51fa\u73fe2F005\u932f\u8aa4\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u8003\u616e\u4ee5\u4e0b\u7c21\u55ae\u7684\u51fd\u6578\uff1a<\/p>\n<pre><code>CREATE OR REPLACE FUNCTION get_user_name(user_id INT) RETURNS TEXT AS $$\nBEGIN\n    IF user_id IS NULL THEN\n        -- \u6c92\u6709\u8fd4\u56de\u503c\n    ELSE\n        RETURN (SELECT name FROM users WHERE id = user_id);\n    END IF;\nEND;\n$$ LANGUAGE plpgsql;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u5982\u679c\u50b3\u5165\u7684user_id\u70baNULL\uff0c\u51fd\u6578\u5c07\u4e0d\u6703\u8fd4\u56de\u4efb\u4f55\u503c\uff0c\u9019\u5c07\u5c0e\u81f4\u932f\u8aa42F005\u7684\u767c\u751f\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9%e9%8c%af%e8%aa%a4-HtEtpjcqjj\">\u5982\u4f55\u4fee\u5fa9\u932f\u8aa4<\/h2>\n<p>\u8981\u4fee\u5fa9\u6b64\u932f\u8aa4\uff0c\u958b\u767c\u8005\u9700\u8981\u78ba\u4fdd\u6bcf\u500b\u53ef\u80fd\u7684\u57f7\u884c\u8def\u5f91\u90fd\u6709\u8fd4\u56de\u8a9e\u53e5\u3002\u4ee5\u4e0b\u662f\u4fee\u6b63\u5f8c\u7684\u51fd\u6578\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE OR REPLACE FUNCTION get_user_name(user_id INT) RETURNS TEXT AS $$\nBEGIN\n    IF user_id IS NULL THEN\n        RETURN 'Unknown User';  -- \u6dfb\u52a0\u8fd4\u56de\u503c\n    ELSE\n        RETURN (SELECT name FROM users WHERE id = user_id);\n    END IF;\nEND;\n$$ LANGUAGE plpgsql;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4fee\u6b63\u5f8c\u7684\u7248\u672c\u4e2d\uff0c\u7576user_id\u70baNULL\u6642\uff0c\u51fd\u6578\u5c07\u8fd4\u56de\u4e00\u500b\u9810\u8a2d\u7684\u5b57\u7b26\u4e32\u201cUnknown User\u201d\uff0c\u5f9e\u800c\u907f\u514d\u4e86\u932f\u8aa42F005\u7684\u767c\u751f\u3002<\/p>\n<h2 id=\"%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-HtEtpjcqjj\">\u6700\u4f73\u5be6\u8e10<\/h2>\n<ul>\n<li><strong>\u59cb\u7d42\u6aa2\u67e5\u8fd4\u56de\u985e\u578b\uff1a<\/strong>\u5728\u5275\u5efa\u51fd\u6578\u6642\uff0c\u78ba\u4fdd\u6240\u6709\u7684\u57f7\u884c\u8def\u5f91\u90fd\u6709\u8fd4\u56de\u503c\uff0c\u7279\u5225\u662f\u5728\u4f7f\u7528\u689d\u4ef6\u8a9e\u53e5\u6642\u3002<\/li>\n<li><strong>\u4f7f\u7528\u9810\u8a2d\u8fd4\u56de\u503c\uff1a<\/strong>\u8003\u616e\u5728\u51fd\u6578\u4e2d\u6dfb\u52a0\u9810\u8a2d\u8fd4\u56de\u503c\uff0c\u4ee5\u8655\u7406\u610f\u5916\u60c5\u6cc1\u3002<\/li>\n<li><strong>\u6e2c\u8a66\u51fd\u6578\uff1a<\/strong>\u5728\u90e8\u7f72\u4e4b\u524d\uff0c\u5c0d\u51fd\u6578\u9032\u884c\u5145\u5206\u7684\u6e2c\u8a66\uff0c\u78ba\u4fdd\u5176\u5728\u5404\u7a2e\u60c5\u6cc1\u4e0b\u90fd\u80fd\u6b63\u5e38\u5de5\u4f5c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-HtEtpjcqjj\">\u7d50\u8ad6<\/h2>\n<p>PostgreSQL\u7684\u932f\u8aa4\u4ee3\u78bc2F005\u901a\u5e38\u662f\u7531\u65bc\u51fd\u6578\u672a\u80fd\u8fd4\u56de\u503c\u6240\u5f15\u8d77\u7684\u3002\u901a\u904e\u4ed4\u7d30\u6aa2\u67e5\u51fd\u6578\u7684\u908f\u8f2f\u4e26\u78ba\u4fdd\u6bcf\u500b\u57f7\u884c\u8def\u5f91\u90fd\u6709\u8fd4\u56de\u8a9e\u53e5\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u4fee\u5fa9\u6b64\u932f\u8aa4\u3002\u9075\u5faa\u6700\u4f73\u5be6\u8e10\u4e0d\u50c5\u80fd\u63d0\u9ad8\u4ee3\u78bc\u7684\u7a69\u5b9a\u6027\uff0c\u9084\u80fd\u6e1b\u5c11\u672a\u4f86\u51fa\u73fe\u985e\u4f3c\u554f\u984c\u7684\u53ef\u80fd\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u7528\u6236\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f\u6578\u64da\u5eab\u7ba1\u7406\u9084\u662f\u61c9\u7528\u7a0b\u5e8f\u958b\u767c\uff0c\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc2F005\u7684\u65b9\u6cd5\uff0c\u89e3\u6c7a\u51fd\u6578\u57f7\u884c\u672a\u8fd4\u56de\u8a9e\u53e5\u7684\u554f\u984c\uff0c\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\u8207\u7a69\u5b9a\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-178872","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178872","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=178872"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178872\/revisions"}],"predecessor-version":[{"id":178873,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178872\/revisions\/178873"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=178872"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=178872"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=178872"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}