{"id":21414,"date":"2024-01-02T08:59:24","date_gmt":"2024-01-02T08:59:24","guid":{"rendered":"https:\/\/server.hk\/blog\/21414\/"},"modified":"2024-11-14T10:34:52","modified_gmt":"2024-11-14T02:34:52","slug":"how-to-fix-postgresql-error-code-42p01-undefined_table","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/21414\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a42P01 &#8211; undefined_table"},"content":{"rendered":"<h1 id=\"how-to-fix-postgresql-error-code-42p01-undefined_table-BCMEAdzXkQ\">\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a42P01 &#8211; undefined_table<\/h1>\n<p>PostgreSQL \u662f\u4e00\u500b\u5f37\u5927\u7684\u958b\u6e90\u95dc\u806f\u5f0f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002\u7136\u800c\uff0c\u8207\u5176\u4ed6\u8edf\u4ef6\u4e00\u6a23\uff0c\u5b83\u4e5f\u53ef\u80fd\u9047\u5230\u932f\u8aa4\u3002\u5176\u4e2d\u4e00\u500b\u5e38\u898b\u932f\u8aa4\u662f\u300c42P01 &#8211; undefined_table\u300d\u932f\u8aa4\u3002\u8a72\u932f\u8aa4\u767c\u751f\u5728\u67e5\u8a62\u4e2d\u5f15\u7528\u4e86\u6578\u64da\u5eab\u4e2d\u4e0d\u5b58\u5728\u7684\u8868\u6642\u3002<\/p>\n<h2 id=\"understanding-the-error-BCMEAdzXkQ\">\u7406\u89e3\u932f\u8aa4<\/h2>\n<p>\u7576\u4f60\u5728 PostgreSQL \u4e2d\u9047\u5230\u300c42P01 &#8211; undefined_table\u300d\u932f\u8aa4\u6642\uff0c\u9019\u610f\u5473\u8457\u4f60\u8a66\u5716\u5728\u67e5\u8a62\u4e2d\u8a2a\u554f\u6216\u5f15\u7528\u7684\u8868\u4e0d\u5b58\u5728\u65bc\u6578\u64da\u5eab\u4e2d\u3002\u9019\u53ef\u80fd\u7531\u65bc\u4ee5\u4e0b\u5e7e\u500b\u539f\u56e0\u5c0e\u81f4\uff1a<\/p>\n<ul>\n<li>\u8868\u540d\u62fc\u5beb\u932f\u8aa4<\/li>\n<li>\u8868\u5c1a\u672a\u5275\u5efa<\/li>\n<li>\u8868\u5df2\u88ab\u522a\u9664\u6216\u4e1f\u5931<\/li>\n<\/ul>\n<p>\u7121\u8ad6\u539f\u56e0\u5982\u4f55\uff0c\u932f\u8aa4\u6d88\u606f\u8868\u660e\u4f60\u6b63\u5728\u8a66\u5716\u8a2a\u554f\u7684\u8868\u7121\u6cd5\u5728\u6578\u64da\u5eab\u4e2d\u627e\u5230\u3002<\/p>\n<h2 id=\"fixing-the-error-BCMEAdzXkQ\">\u4fee\u5fa9\u932f\u8aa4<\/h2>\n<p>\u8981\u4fee\u5fa9 PostgreSQL \u4e2d\u7684\u300c42P01 &#8211; undefined_table\u300d\u932f\u8aa4\uff0c\u4f60\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u6b65\u9a5f\u9032\u884c\uff1a<\/p>\n<h3 id=\"1-check-for-typos-BCMEAdzXkQ\">1. \u6aa2\u67e5\u62fc\u5beb\u932f\u8aa4<\/h3>\n<p>\u4ed4\u7d30\u6aa2\u67e5\u4f60\u67e5\u8a62\u4e2d\u7684\u8868\u540d\u662f\u5426\u6709\u4efb\u4f55\u62fc\u5beb\u932f\u8aa4\u3002\u5373\u4f7f\u662f\u4e00\u500b\u5c0f\u7684\u62fc\u5beb\u932f\u8aa4\u4e5f\u53ef\u80fd\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002\u78ba\u4fdd\u8868\u540d\u62fc\u5beb\u6b63\u78ba\u4e26\u8207\u6578\u64da\u5eab\u4e2d\u7684\u5be6\u969b\u8868\u540d\u5339\u914d\u3002<\/p>\n<h3 id=\"2-verify-table-creation-BCMEAdzXkQ\">2. \u9a57\u8b49\u8868\u7684\u5275\u5efa<\/h3>\n<p>\u5982\u679c\u4f60\u78ba\u5b9a\u8868\u540d\u6b63\u78ba\uff0c\u8acb\u78ba\u4fdd\u8a72\u8868\u5df2\u7d93\u5728\u6578\u64da\u5eab\u4e2d\u5275\u5efa\u3002\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5217\u51fa\u7576\u524d\u6578\u64da\u5eab\u4e2d\u7684\u6240\u6709\u8868\uff1a<\/p>\n<pre><code>SELECT table_name FROM information_schema.tables WHERE table_schema = 'public';<\/code><\/pre>\n<p>\u5982\u679c\u4f60\u8a66\u5716\u8a2a\u554f\u7684\u8868\u672a\u5217\u51fa\uff0c\u5247\u8868\u793a\u8a72\u8868\u5c1a\u672a\u5275\u5efa\u3002\u5728\u9019\u7a2e\u60c5\u6cc1\u4e0b\uff0c\u4f60\u9700\u8981\u4f7f\u7528\u9069\u7576\u7684 SQL \u547d\u4ee4\u5275\u5efa\u8a72\u8868\u3002<\/p>\n<h3 id=\"3-check-for-table-deletion-BCMEAdzXkQ\">3. \u6aa2\u67e5\u8868\u662f\u5426\u88ab\u522a\u9664<\/h3>\n<p>\u5982\u679c\u8a72\u8868\u4e4b\u524d\u5b58\u5728\u4f46\u73fe\u5728\u4e1f\u5931\u4e86\uff0c\u5b83\u53ef\u80fd\u5df2\u88ab\u522a\u9664\u3002\u4f60\u53ef\u4ee5\u901a\u904e\u57f7\u884c\u4ee5\u4e0b\u547d\u4ee4\u4f86\u78ba\u8a8d\u8868\u662f\u5426\u88ab\u522a\u9664\uff1a<\/p>\n<pre><code>SELECT table_name FROM information_schema.tables WHERE table_schema = 'public' AND table_name = 'your_table_name';<\/code><\/pre>\n<p>\u5982\u679c\u67e5\u8a62\u6c92\u6709\u8fd4\u56de\u7d50\u679c\uff0c\u5247\u8868\u793a\u8a72\u8868\u5df2\u88ab\u522a\u9664\u3002\u4f60\u53ef\u4ee5\u5f9e\u5099\u4efd\u4e2d\u6062\u5fa9\u8a72\u8868\u6216\u6839\u64da\u9700\u8981\u91cd\u65b0\u5275\u5efa\u5b83\u3002<\/p>\n<h3 id=\"4-grant-necessary-permissions-BCMEAdzXkQ\">4. \u6388\u4e88\u5fc5\u8981\u7684\u6b0a\u9650<\/h3>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u5982\u679c\u57f7\u884c\u67e5\u8a62\u7684\u7528\u6236\u6c92\u6709\u8a2a\u554f\u8a72\u8868\u7684\u5fc5\u8981\u6b0a\u9650\uff0c\u4e5f\u53ef\u80fd\u6703\u51fa\u73fe\u300c42P01 &#8211; undefined_table\u300d\u932f\u8aa4\u3002\u78ba\u4fdd\u7528\u6236\u64c1\u6709\u8b80\u53d6\u6216\u4fee\u6539\u8a72\u8868\u7684\u9069\u7576\u6b0a\u9650\u3002<\/p>\n<h3 id=\"5-use-schema-prefix-BCMEAdzXkQ\">5. \u4f7f\u7528\u67b6\u69cb\u524d\u7db4<\/h3>\n<p>\u5982\u679c\u4f60\u6b63\u5728\u8655\u7406\u591a\u500b\u67b6\u69cb\u7684\u6578\u64da\u5eab\uff0c\u8acb\u78ba\u4fdd\u5728\u5f15\u7528\u8868\u6642\u5305\u542b\u67b6\u69cb\u540d\u7a31\u4f5c\u70ba\u524d\u7db4\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u7684\u8868\u4f4d\u65bc\u300cpublic\u300d\u67b6\u69cb\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u6cd5\uff1a<\/p>\n<pre><code>SELECT * FROM public.your_table_name;<\/code><\/pre>\n<p>\u901a\u904e\u6307\u5b9a\u67b6\u69cb\u540d\u7a31\uff0c\u4f60\u53ef\u4ee5\u907f\u514d\u4efb\u4f55\u6b67\u7fa9\uff0c\u4e26\u78ba\u4fdd PostgreSQL \u80fd\u5920\u6b63\u78ba\u5b9a\u4f4d\u8a72\u8868\u3002<\/p>\n<h2 id=\"summary-BCMEAdzXkQ\">\u7e3d\u7d50<\/h2>\n<p>\u9047\u5230 PostgreSQL \u4e2d\u7684\u300c42P01 &#8211; undefined_table\u300d\u932f\u8aa4\u53ef\u80fd\u6703\u4ee4\u4eba\u6cae\u55aa\uff0c\u4f46\u53ea\u8981\u63a1\u53d6\u6b63\u78ba\u7684\u65b9\u6cd5\uff0c\u9019\u500b\u554f\u984c\u662f\u53ef\u4ee5\u89e3\u6c7a\u7684\u3002\u4ed4\u7d30\u6aa2\u67e5\u8868\u540d\u662f\u5426\u6709\u62fc\u5beb\u932f\u8aa4\uff0c\u78ba\u8a8d\u8868\u662f\u5426\u5df2\u5275\u5efa\uff0c\u5fc5\u8981\u6642\u6aa2\u67e5\u8868\u662f\u5426\u88ab\u522a\u9664\u3002\u6388\u4e88\u9069\u7576\u7684\u6b0a\u9650\uff0c\u4e26\u5728\u8655\u7406\u591a\u500b\u67b6\u69cb\u6642\u4f7f\u7528\u67b6\u69cb\u524d\u7db4\u3002\u901a\u904e\u9075\u5faa\u9019\u4e9b\u6b65\u9a5f\uff0c\u4f60\u53ef\u4ee5\u514b\u670d\u8a72\u932f\u8aa4\uff0c\u7e7c\u7e8c\u9806\u5229\u5730\u4f7f\u7528 PostgreSQL\u3002<\/p>\n<p>\u5982\u679c\u4f60\u9700\u8981\u53ef\u9760\u4e14\u9ad8\u6548\u7684 VPS \u8a17\u7ba1\u65b9\u6848\uff0c\u8acb\u8003\u616e <a href=\"https:\/\/server.hk\">Server.HK<\/a>\u3002\u6211\u5011\u63d0\u4f9b\u9802\u5c16\u7684 VPS \u8a17\u7ba1\u670d\u52d9\uff0c\u78ba\u4fdd\u4f60\u7684\u61c9\u7528\u7a0b\u5e8f\u7a69\u5b9a\u4e14\u5177\u5099\u53ef\u64f4\u5c55\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u4fee\u5fa9 PostgreSQL &#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":[4925],"tags":[],"class_list":["post-21414","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21414","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=21414"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21414\/revisions"}],"predecessor-version":[{"id":24079,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21414\/revisions\/24079"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=21414"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=21414"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=21414"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}