{"id":178992,"date":"2024-11-08T22:06:22","date_gmt":"2024-11-08T14:06:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/178992\/"},"modified":"2024-11-08T22:06:23","modified_gmt":"2024-11-08T14:06:23","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9-postgresql-%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc%ef%bc%9a42703-undefined_column%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/178992\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a42703 &#8211; undefined_column\uff1f"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9-postgresql-%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc%ef%bc%9a42703-undefined_column%ef%bc%9f-nOZHbmTBPF\">\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a42703 &#8211; undefined_column\uff1f<\/h1>\n<p>\u5728\u4f7f\u7528 PostgreSQL \u6578\u64da\u5eab\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\u78bc 42703\uff0c\u8868\u793a\u300cundefined_column\u300d\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u51fa\u73fe\u5728\u67e5\u8a62\u4e2d\u5f15\u7528\u4e86\u4e0d\u5b58\u5728\u7684\u5217\u540d\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u9019\u500b\u932f\u8aa4\u7684\u6210\u56e0\u3001\u5982\u4f55\u8b58\u5225\u554f\u984c\u4ee5\u53ca\u4fee\u5fa9\u65b9\u6cd5\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc-42703-%e7%9a%84%e6%88%90%e5%9b%a0-nOZHbmTBPF\">\u932f\u8aa4\u4ee3\u78bc 42703 \u7684\u6210\u56e0<\/h2>\n<p>PostgreSQL \u7684\u932f\u8aa4\u4ee3\u78bc 42703 \u901a\u5e38\u51fa\u73fe\u5728\u4ee5\u4e0b\u5e7e\u7a2e\u60c5\u6cc1\uff1a<\/p>\n<ul>\n<li><strong>\u62fc\u5beb\u932f\u8aa4\uff1a<\/strong>\u67e5\u8a62\u4e2d\u5217\u540d\u7684\u62fc\u5beb\u932f\u8aa4\u662f\u6700\u5e38\u898b\u7684\u539f\u56e0\u4e4b\u4e00\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u5728\u67e5\u8a62\u4e2d\u5beb\u6210\u4e86 &#8220;usernme&#8221; \u800c\u4e0d\u662f &#8220;username&#8221;\uff0c\u5c31\u6703\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u5217\u540d\u4e0d\u5728\u7bc4\u570d\u5167\uff1a<\/strong>\u5982\u679c\u4f60\u5728\u67e5\u8a62\u4e2d\u5f15\u7528\u7684\u5217\u540d\u4e0d\u5728\u6240\u67e5\u8a62\u7684\u8868\u6216\u8996\u5716\u4e2d\uff0c\u4e5f\u6703\u51fa\u73fe\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u4f7f\u7528\u4e86\u932f\u8aa4\u7684\u8868\u5225\u540d\uff1a<\/strong>\u5728\u4f7f\u7528\u8868\u5225\u540d\u6642\uff0c\u5982\u679c\u6c92\u6709\u6b63\u78ba\u5f15\u7528\u5225\u540d\u4e2d\u7684\u5217\u540d\uff0c\u4e5f\u6703\u5c0e\u81f4 undefined_column \u932f\u8aa4\u3002<\/li>\n<li><strong>\u4e0a\u4e0b\u6587\u554f\u984c\uff1a<\/strong>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u5217\u540d\u53ef\u80fd\u5728\u67d0\u500b\u4e0a\u4e0b\u6587\u4e2d\u662f\u6709\u6548\u7684\uff0c\u4f46\u5728\u5176\u4ed6\u4e0a\u4e0b\u6587\u4e2d\u537b\u7121\u6cd5\u8b58\u5225\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e8%ad%98%e5%88%a5%e5%95%8f%e9%a1%8c-nOZHbmTBPF\">\u5982\u4f55\u8b58\u5225\u554f\u984c<\/h2>\n<p>\u8981\u4fee\u5fa9\u932f\u8aa4 42703\uff0c\u9996\u5148\u9700\u8981\u8b58\u5225\u554f\u984c\u7684\u6839\u6e90\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6b65\u9a5f\u4f86\u5e6b\u52a9\u4f60\u627e\u5230\u554f\u984c\u6240\u5728\uff1a<\/p>\n<ul>\n<li><strong>\u6aa2\u67e5 SQL \u67e5\u8a62\uff1a<\/strong>\u4ed4\u7d30\u6aa2\u67e5\u4f60\u7684 SQL \u67e5\u8a62\uff0c\u78ba\u4fdd\u6240\u6709\u5217\u540d\u7684\u62fc\u5beb\u6b63\u78ba\uff0c\u4e26\u4e14\u5b83\u5011\u78ba\u5be6\u5b58\u5728\u65bc\u76f8\u61c9\u7684\u8868\u4e2d\u3002<\/li>\n<li><strong>\u4f7f\u7528 d \u547d\u4ee4\uff1a<\/strong>\u5728 PostgreSQL \u7684\u547d\u4ee4\u884c\u754c\u9762\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 d \u547d\u4ee4\u4f86\u67e5\u770b\u8868\u7684\u7d50\u69cb\uff0c\u78ba\u8a8d\u5217\u540d\u662f\u5426\u6b63\u78ba\u3002<\/li>\n<li><strong>\u67e5\u770b\u932f\u8aa4\u4fe1\u606f\uff1a<\/strong>PostgreSQL \u901a\u5e38\u6703\u63d0\u4f9b\u8a73\u7d30\u7684\u932f\u8aa4\u4fe1\u606f\uff0c\u6aa2\u67e5\u9019\u4e9b\u4fe1\u606f\u53ef\u4ee5\u5e6b\u52a9\u4f60\u5b9a\u4f4d\u554f\u984c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bf%ae%e5%be%a9%e6%96%b9%e6%b3%95-nOZHbmTBPF\">\u4fee\u5fa9\u65b9\u6cd5<\/h2>\n<p>\u4e00\u65e6\u8b58\u5225\u51fa\u554f\u984c\uff0c\u63a5\u4e0b\u4f86\u5c31\u662f\u4fee\u5fa9\u5b83\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u4fee\u5fa9\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li><strong>\u4fee\u6b63\u62fc\u5beb\u932f\u8aa4\uff1a<\/strong>\u5982\u679c\u767c\u73fe\u5217\u540d\u62fc\u5beb\u932f\u8aa4\uff0c\u8acb\u7acb\u5373\u4fee\u6b63\u3002\u4f8b\u5982\uff0c\u5c07 &#8220;usernme&#8221; \u6539\u70ba &#8220;username&#8221;\u3002<\/li>\n<li><strong>\u78ba\u8a8d\u5217\u5b58\u5728\uff1a<\/strong>\u5982\u679c\u5217\u540d\u4e0d\u5728\u8868\u4e2d\uff0c\u8acb\u6aa2\u67e5\u8868\u7d50\u69cb\uff0c\u4e26\u78ba\u4fdd\u4f60\u5f15\u7528\u7684\u5217\u540d\u662f\u6b63\u78ba\u7684\u3002\u5982\u679c\u9700\u8981\uff0c\u8003\u616e\u6dfb\u52a0\u7f3a\u5931\u7684\u5217\u3002<\/li>\n<li><strong>\u6b63\u78ba\u4f7f\u7528\u8868\u5225\u540d\uff1a<\/strong>\u5982\u679c\u4f7f\u7528\u4e86\u8868\u5225\u540d\uff0c\u8acb\u78ba\u4fdd\u5728\u67e5\u8a62\u4e2d\u6b63\u78ba\u5f15\u7528\u9019\u4e9b\u5225\u540d\u3002\u4f8b\u5982\uff0c\u4f7f\u7528 &#8220;a.username&#8221; \u800c\u4e0d\u662f &#8220;username&#8221;\u3002<\/li>\n<li><strong>\u6aa2\u67e5\u4e0a\u4e0b\u6587\uff1a<\/strong>\u5982\u679c\u5217\u540d\u5728\u67d0\u500b\u4e0a\u4e0b\u6587\u4e2d\u7121\u6cd5\u8b58\u5225\uff0c\u8acb\u6aa2\u67e5\u67e5\u8a62\u7684\u7d50\u69cb\uff0c\u78ba\u4fdd\u6240\u6709\u5f15\u7528\u90fd\u662f\u6b63\u78ba\u7684\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%a4%ba%e4%be%8b-nOZHbmTBPF\">\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4fee\u5fa9\u932f\u8aa4 42703\uff1a<\/p>\n<pre><code>SELECT username FROM users WHERE usernme = 'john_doe'; -- \u9019\u88e1\u6703\u51fa\u73fe\u932f\u8aa4\n<\/code><\/pre>\n<p>\u4fee\u6b63\u5f8c\u7684\u67e5\u8a62\u61c9\u8a72\u662f\uff1a<\/p>\n<pre><code>SELECT username FROM users WHERE username = 'john_doe'; -- \u4fee\u6b63\u62fc\u5beb\u932f\u8aa4\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-nOZHbmTBPF\">\u7e3d\u7d50<\/h2>\n<p>PostgreSQL \u932f\u8aa4\u4ee3\u78bc 42703 &#8211; undefined_column \u901a\u5e38\u662f\u7531\u65bc\u5217\u540d\u62fc\u5beb\u932f\u8aa4\u3001\u5217\u4e0d\u5b58\u5728\u6216\u4e0a\u4e0b\u6587\u554f\u984c\u5f15\u8d77\u7684\u3002\u901a\u904e\u4ed4\u7d30\u6aa2\u67e5 SQL \u67e5\u8a62\u3001\u4f7f\u7528 d \u547d\u4ee4\u67e5\u770b\u8868\u7d50\u69cb\u4ee5\u53ca\u6b63\u78ba\u5f15\u7528\u8868\u5225\u540d\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u8b58\u5225\u548c\u4fee\u5fa9\u9019\u500b\u932f\u8aa4\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u6216 <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u4f60\u7684\u61c9\u7528\u7a0b\u5e8f\u904b\u884c\u9806\u5229\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc 42703 &#8211; undefined_column\uff0c\u89e3\u6c7a\u67e5\u8a62\u4e2d\u672a\u5b9a\u7fa9\u6b04\u4f4d\u7684\u554f\u984c\uff0c\u63d0\u5347\u6578\u64da\u5eab\u64cd\u4f5c\u6548\u7387\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-178992","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178992","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=178992"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178992\/revisions"}],"predecessor-version":[{"id":178993,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178992\/revisions\/178993"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=178992"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=178992"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=178992"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}