{"id":179080,"date":"2024-11-08T22:50:20","date_gmt":"2024-11-08T14:50:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/179080\/"},"modified":"2024-11-08T22:50:21","modified_gmt":"2024-11-08T14:50:21","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%9a54011-too_many_columns%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/179080\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a54011 &#8211; too_many_columns\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%9a54011-too_many_columns-gRYBXrOLQB\">\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a54011 &#8211; too_many_columns<\/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 54011\uff0c\u8a72\u932f\u8aa4\u901a\u5e38\u986f\u793a\u70ba &#8220;too_many_columns&#8221;\u3002\u9019\u500b\u932f\u8aa4\u7684\u51fa\u73fe\u901a\u5e38\u662f\u56e0\u70ba\u5728\u5275\u5efa\u8868\u683c\u6216\u4fee\u6539\u8868\u683c\u7d50\u69cb\u6642\uff0c\u6240\u6307\u5b9a\u7684\u5217\u6578\u8d85\u904e\u4e86 PostgreSQL \u7684\u9650\u5236\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=\"postgresql-%e5%88%97%e6%95%b8%e9%99%90%e5%88%b6-gRYBXrOLQB\">PostgreSQL \u5217\u6578\u9650\u5236<\/h2>\n<p>PostgreSQL \u5c0d\u6bcf\u500b\u8868\u683c\u7684\u5217\u6578\u6709\u4e00\u5b9a\u7684\u9650\u5236\u3002\u6839\u64da\u5b98\u65b9\u6587\u6a94\uff0c\u55ae\u500b\u8868\u683c\u6700\u591a\u53ef\u4ee5\u64c1\u6709 1,600 \u5217\u3002\u9019\u500b\u9650\u5236\u662f\u7531\u65bc PostgreSQL \u5728\u5167\u90e8\u5b58\u5132\u6578\u64da\u7684\u65b9\u5f0f\u6240\u6c7a\u5b9a\u7684\u3002\u7576\u4f60\u5617\u8a66\u5275\u5efa\u4e00\u500b\u5305\u542b\u8d85\u904e 1,600 \u5217\u7684\u8868\u683c\u6642\uff0c\u5c31\u6703\u51fa\u73fe\u932f\u8aa4\u4ee3\u78bc 54011\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e5%8e%9f%e5%9b%a0%e5%88%86%e6%9e%90-gRYBXrOLQB\">\u932f\u8aa4\u539f\u56e0\u5206\u6790<\/h2>\n<p>\u932f\u8aa4\u4ee3\u78bc 54011 \u7684\u4e3b\u8981\u539f\u56e0\u662f\u8868\u683c\u7684\u5217\u6578\u8d85\u904e\u4e86 PostgreSQL \u7684\u6700\u5927\u9650\u5236\u3002\u9019\u53ef\u80fd\u767c\u751f\u5728\u4ee5\u4e0b\u5e7e\u7a2e\u60c5\u6cc1\u4e0b\uff1a<\/p>\n<ul>\n<li><strong>\u5275\u5efa\u65b0\u8868\u683c\uff1a<\/strong>\u7576\u4f60\u4f7f\u7528 CREATE TABLE \u8a9e\u53e5\u5275\u5efa\u4e00\u500b\u65b0\u8868\u683c\u6642\uff0c\u5982\u679c\u6307\u5b9a\u7684\u5217\u6578\u8d85\u904e\u4e86\u9650\u5236\uff0c\u5c31\u6703\u51fa\u73fe\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u4fee\u6539\u73fe\u6709\u8868\u683c\uff1a<\/strong>\u4f7f\u7528 ALTER TABLE \u8a9e\u53e5\u6dfb\u52a0\u65b0\u5217\u6642\uff0c\u5982\u679c\u6dfb\u52a0\u7684\u5217\u6578\u4f7f\u7e3d\u5217\u6578\u8d85\u904e\u9650\u5236\uff0c\u4e5f\u6703\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u8907\u88fd\u8868\u683c\u7d50\u69cb\uff1a<\/strong>\u5728\u4f7f\u7528 SELECT INTO \u6216 CREATE TABLE AS \u8a9e\u53e5\u6642\uff0c\u5982\u679c\u6e90\u8868\u7684\u5217\u6578\u904e\u591a\uff0c\u5247\u6703\u51fa\u73fe\u6b64\u932f\u8aa4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc-54011-gRYBXrOLQB\">\u5982\u4f55\u4fee\u5fa9\u932f\u8aa4\u4ee3\u78bc 54011<\/h2>\n<p>\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc 54011 \u7684\u65b9\u6cd5\u4e3b\u8981\u6709\u4ee5\u4e0b\u5e7e\u7a2e\uff1a<\/p>\n<h3 id=\"1-%e6%b8%9b%e5%b0%91%e5%88%97%e6%95%b8-gRYBXrOLQB\">1. \u6e1b\u5c11\u5217\u6578<\/h3>\n<p>\u6700\u76f4\u63a5\u7684\u89e3\u6c7a\u65b9\u6848\u662f\u6e1b\u5c11\u8868\u683c\u4e2d\u7684\u5217\u6578\u3002\u9019\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u5e7e\u7a2e\u65b9\u5f0f\u5be6\u73fe\uff1a<\/p>\n<ul>\n<li>\u91cd\u65b0\u8a2d\u8a08\u6578\u64da\u6a21\u578b\uff0c\u5c07\u67d0\u4e9b\u5217\u5408\u4f75\u5230\u4e00\u500b\u5217\u4e2d\uff0c\u4f8b\u5982\u4f7f\u7528 JSON \u6216 JSONB \u985e\u578b\u4f86\u5b58\u5132\u7d50\u69cb\u5316\u6578\u64da\u3002<\/li>\n<li>\u5c07\u67d0\u4e9b\u5217\u79fb\u52d5\u5230\u53e6\u4e00\u500b\u8868\u683c\u4e2d\uff0c\u901a\u904e\u5916\u9375\u95dc\u806f\u4f86\u4fdd\u6301\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002<\/li>\n<\/ul>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e8%a6%96%e5%9c%96-gRYBXrOLQB\">2. \u4f7f\u7528\u8996\u5716<\/h3>\n<p>\u5982\u679c\u9700\u8981\u67e5\u8a62\u5927\u91cf\u5217\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u8996\u5716\u4f86\u7c21\u5316\u67e5\u8a62\u3002\u8996\u5716\u53ef\u4ee5\u5c07\u591a\u500b\u8868\u683c\u7684\u6578\u64da\u6574\u5408\u5728\u4e00\u8d77\uff0c\u4e26\u4e14\u4e0d\u6703\u53d7\u5230\u5217\u6578\u9650\u5236\u7684\u5f71\u97ff\u3002<\/p>\n<h3 id=\"3-%e6%aa%a2%e6%9f%a5%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-gRYBXrOLQB\">3. \u6aa2\u67e5\u6578\u64da\u985e\u578b<\/h3>\n<p>\u5728\u8a2d\u8a08\u8868\u683c\u6642\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u4e5f\u53ef\u4ee5\u5e6b\u52a9\u6e1b\u5c11\u5217\u6578\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u6578\u7d44\u6216 JSON \u985e\u578b\u4f86\u5b58\u5132\u591a\u500b\u503c\uff0c\u800c\u4e0d\u662f\u70ba\u6bcf\u500b\u503c\u5275\u5efa\u55ae\u7368\u7684\u5217\u3002<\/p>\n<h2 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-gRYBXrOLQB\">\u793a\u4f8b\u4ee3\u78bc<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528 JSON \u985e\u578b\u4f86\u6e1b\u5c11\u5217\u6578\uff1a<\/p>\n<pre><code>CREATE TABLE users (\n    id SERIAL PRIMARY KEY,\n    name VARCHAR(100),\n    details JSONB\n);\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c&#8221;details&#8221; \u5217\u53ef\u4ee5\u7528\u4f86\u5b58\u5132\u7528\u6236\u7684\u591a\u500b\u5c6c\u6027\uff0c\u800c\u4e0d\u9700\u8981\u70ba\u6bcf\u500b\u5c6c\u6027\u5275\u5efa\u55ae\u7368\u7684\u5217\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-gRYBXrOLQB\">\u7e3d\u7d50<\/h2>\n<p>PostgreSQL \u932f\u8aa4\u4ee3\u78bc 54011 &#8211; too_many_columns \u662f\u7531\u65bc\u8868\u683c\u7684\u5217\u6578\u8d85\u904e\u4e86 PostgreSQL \u7684\u9650\u5236\u6240\u5f15\u8d77\u7684\u3002\u901a\u904e\u91cd\u65b0\u8a2d\u8a08\u6578\u64da\u6a21\u578b\u3001\u4f7f\u7528\u8996\u5716\u6216\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u500b\u554f\u984c\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u5b58\u5132\u548c\u7ba1\u7406\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc 54011 &#8211; too_many_columns\uff0c\u89e3\u6c7a\u5217\u6578\u904e\u591a\u7684\u554f\u984c\uff0c\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\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-179080","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179080","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=179080"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179080\/revisions"}],"predecessor-version":[{"id":179081,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179080\/revisions\/179081"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=179080"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=179080"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=179080"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}