{"id":21412,"date":"2024-01-02T08:57:24","date_gmt":"2024-01-02T08:57:24","guid":{"rendered":"https:\/\/server.hk\/blog\/21412\/"},"modified":"2024-11-14T10:34:54","modified_gmt":"2024-11-14T02:34:54","slug":"how-to-fix-postgresql-error-code-42703-undefined_column","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/21412\/","title":{"rendered":"\u5982\u4f55\u89e3\u51b3 PostgreSQL \u9519\u8bef\u4ee3\u7801\uff1a42703 &#8211; undefined_column"},"content":{"rendered":"<h1 id=\"how-to-fix-postgresql-error-code-42703-undefined_column-gmIMxmLtLS\">\u5982\u4f55\u89e3\u51b3 PostgreSQL \u9519\u8bef\u4ee3\u7801\uff1a42703 &#8211; undefined_column<\/h1>\n<p>PostgreSQL \u662f\u4e00\u6b3e\u529f\u80fd\u5f3a\u5927\u7684\u5f00\u6e90\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u5e7f\u6cdb\u7528\u4e8e\u5404\u79cd\u5e94\u7528\u3002\u7136\u800c\uff0c\u5b83\u548c\u5176\u4ed6\u8f6f\u4ef6\u4e00\u6837\uff0c\u4e5f\u4f1a\u51fa\u73b0\u9519\u8bef\u3002PostgreSQL \u7528\u6237\u53ef\u80fd\u4f1a\u9047\u5230\u7684\u4e00\u4e2a\u5e38\u89c1\u9519\u8bef\u662f &#8220;42703 &#8211; undefined_column&#8221; \u9519\u8bef\u3002\u5f53\u67e5\u8be2\u5f15\u7528\u4e86\u6307\u5b9a\u8868\u4e2d\u4e0d\u5b58\u5728\u7684\u5217\u65f6\uff0c\u5c31\u4f1a\u51fa\u73b0\u8fd9\u4e2a\u9519\u8bef\u3002\u672c\u6587\u5c06\u63a2\u8ba8\u6b64\u9519\u8bef\u7684\u6210\u56e0\uff0c\u5e76\u63d0\u4f9b\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n<h2 id=\"causes-of-the-error-gmIMxmLtLS\">\u9519\u8bef\u6210\u56e0<\/h2>\n<p>&#8220;42703 &#8211; undefined_column&#8221; \u9519\u8bef\u901a\u5e38\u662f\u7531\u4ee5\u4e0b\u539f\u56e0\u5f15\u8d77\u7684\uff1a<\/p>\n<ul>\n<li><strong>\u5217\u540d\u62fc\u5199\u9519\u8bef\uff1a<\/strong> \u6b64\u9519\u8bef\u6700\u5e38\u89c1\u7684\u539f\u56e0\u662f\u67e5\u8be2\u4e2d\u5217\u540d\u7684\u62fc\u5199\u9519\u8bef\u3002\u7531\u4e8e PostgreSQL \u533a\u5206\u5927\u5c0f\u5199\uff0c\u5373\u4f7f\u662f\u4e00\u4e2a\u5c0f\u5c0f\u7684\u62fc\u5199\u9519\u8bef\u4e5f\u4f1a\u5bfc\u81f4\u9519\u8bef\u3002<\/li>\n<li><strong>\u7f3a\u5931\u5217\uff1a<\/strong> \u53e6\u4e00\u4e2a\u9519\u8bef\u7684\u539f\u56e0\u662f\u8868\u4e2d\u7f3a\u5931\u5217\u3002\u8fd9\u53ef\u80fd\u662f\u7531\u4e8e\u5217\u672a\u88ab\u521b\u5efa\u6216\u5728\u7f16\u5199\u67e5\u8be2\u540e\u88ab\u5220\u9664\u3002<\/li>\n<li><strong>\u8868\u522b\u540d\uff1a<\/strong> \u5982\u679c\u5728\u67e5\u8be2\u4e2d\u4f7f\u7528\u4e86\u8868\u522b\u540d\uff0c\u8bf7\u786e\u4fdd\u5217\u540d\u6b63\u786e\u5f15\u7528\u4e86\u8be5\u522b\u540d\u3002<\/li>\n<\/ul>\n<h2 id=\"fixing-the-error-gmIMxmLtLS\">\u4fee\u590d\u6b64\u9519\u8bef<\/h2>\n<p>\u9047\u5230 &#8220;42703 &#8211; undefined_column&#8221; \u9519\u8bef\u65f6\uff0c\u8bf7\u6309\u4ee5\u4e0b\u6b65\u9aa4\u4fee\u590d\uff1a<\/p>\n<h3 id=\"1-check-for-typos-gmIMxmLtLS\">1. \u68c0\u67e5\u62fc\u5199\u9519\u8bef<\/h3>\n<p>\u68c0\u67e5\u60a8\u7684\u67e5\u8be2\uff0c\u786e\u4fdd\u5217\u540d\u62fc\u5199\u6b63\u786e\u3002\u6ce8\u610f PostgreSQL \u7684\u5927\u5c0f\u5199\u654f\u611f\u6027\u3002\u5373\u4f7f\u662f\u4e00\u4e2a\u5b57\u7b26\u7684\u5dee\u5f02\u4e5f\u4f1a\u5f15\u8d77\u9519\u8bef\u3002\u5982\u679c\u53d1\u73b0\u4efb\u4f55\u62fc\u5199\u9519\u8bef\uff0c\u8bf7\u66f4\u6b63\u540e\u91cd\u65b0\u8fd0\u884c\u67e5\u8be2\u3002<\/p>\n<h3 id=\"2-verify-column-existence-gmIMxmLtLS\">2. \u9a8c\u8bc1\u5217\u662f\u5426\u5b58\u5728<\/h3>\n<p>\u518d\u6b21\u786e\u5b9a\u6307\u5b9a\u8868\u4e2d\u662f\u5426\u5b58\u5728\u8be5\u5217\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8be2\u5217\u51fa\u8868\u4e2d\u7684\u6240\u6709\u5217\uff1a<\/p>\n<pre><code>SELECT column_name\r\nFROM information_schema.columns\r\nWHERE table_name = 'your_table_name';\r\n<\/code><\/pre>\n<p>\u5982\u679c\u7f3a\u5c11\u8be5\u5217\uff0c\u60a8\u9700\u8981\u4f7f\u7528 ALTER TABLE \u8bed\u53e5\u5c06\u5176\u6dfb\u52a0\u5230\u8868\u4e2d\uff1a<\/p>\n<pre><code>ALTER TABLE your_table_name\r\nADD COLUMN your_column_name data_type;\r\n<\/code><\/pre>\n<p>\u5c06 &#8220;your_table_name&#8221; \u66ff\u6362\u4e3a\u5b9e\u9645\u8868\u540d\uff0c&#8221;your_column_name&#8221; \u66ff\u6362\u4e3a\u7f3a\u5931\u7684\u5217\u540d\u3002\u6307\u5b9a\u5217\u7684\u9002\u5f53\u6570\u636e\u7c7b\u578b\u3002<\/p>\n<h3 id=\"3-check-table-aliases-gmIMxmLtLS\">3. \u68c0\u67e5\u8868\u522b\u540d<\/h3>\n<p>\u5982\u679c\u5728\u67e5\u8be2\u4e2d\u4f7f\u7528\u4e86\u8868\u522b\u540d\uff0c\u8bf7\u786e\u4fdd\u5217\u540d\u6b63\u786e\u5f15\u7528\u4e86\u8be5\u522b\u540d\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u4e3a\u8868 &#8220;your_table_name&#8221; \u8bbe\u7f6e\u4e86\u522b\u540d &#8220;t&#8221;\uff0c\u8bf7\u786e\u4fdd\u5728\u67e5\u8be2\u4e2d\u4f7f\u7528\u7684\u662f &#8220;t.column_name&#8221;\uff0c\u800c\u4e0d\u662f\u7b80\u5355\u7684 &#8220;column_name&#8221;\u3002<\/p>\n<h3 id=\"4-update-postgresql-version-gmIMxmLtLS\">4. \u66f4\u65b0 PostgreSQL \u7248\u672c<\/h3>\n<p>\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c&#8221;42703 &#8211; undefined_column&#8221; \u9519\u8bef\u53ef\u80fd\u662f\u7531\u4e8e\u60a8\u4f7f\u7528\u7684 PostgreSQL \u7248\u672c\u4e2d\u5b58\u5728\u7684 bug \u5f15\u8d77\u7684\u3002\u66f4\u65b0\u5230\u6700\u65b0\u7248\u672c\u53ef\u4ee5\u89e3\u51b3\u8fd9\u4e9b\u95ee\u9898\u3002\u5728\u66f4\u65b0\u4e4b\u524d\uff0c\u8bf7\u786e\u4fdd\u5907\u4efd\u6570\u636e\u5e93\uff0c\u4ee5\u907f\u514d\u6570\u636e\u4e22\u5931\u3002<\/p>\n<h2 id=\"summary-gmIMxmLtLS\">\u603b\u7ed3<\/h2>\n<p>\u5728 PostgreSQL \u4e2d\uff0c\u5f53\u67e5\u8be2\u5f15\u7528\u4e86\u6307\u5b9a\u8868\u4e2d\u4e0d\u5b58\u5728\u7684\u5217\u65f6\uff0c\u5c31\u4f1a\u51fa\u73b0 &#8220;42703 &#8211; undefined_column&#8221; \u9519\u8bef\u3002\u60a8\u53ef\u4ee5\u901a\u8fc7\u68c0\u67e5\u62fc\u5199\u9519\u8bef\u3001\u9a8c\u8bc1\u5217\u7684\u5b58\u5728\u6027\u3001\u786e\u4fdd\u6b63\u786e\u7684\u8868\u522b\u540d\u4ee5\u53ca\u5fc5\u8981\u65f6\u66f4\u65b0 PostgreSQL \u5230\u6700\u65b0\u7248\u672c\u6765\u89e3\u51b3\u6b64\u9519\u8bef\u3002\u5982\u679c\u60a8\u9700\u8981\u6709\u5173 PostgreSQL \u6216\u5176\u4ed6 VPS \u4e3b\u673a\u670d\u52a1\u7684\u5e2e\u52a9\uff0c\u8bf7\u8003\u8651\u8bbf\u95ee <a href=\"https:\/\/server.hk\">Server.HK<\/a>\u3002\u6211\u4eec\u53ef\u9760\u4e14\u9ad8\u6027\u80fd\u7684 VPS \u89e3\u51b3\u65b9\u6848\u65e8\u5728\u6ee1\u8db3\u60a8\u7684\u6258\u7ba1\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u89e3\u51b3 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-21412","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21412","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=21412"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21412\/revisions"}],"predecessor-version":[{"id":24080,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21412\/revisions\/24080"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=21412"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=21412"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=21412"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}