{"id":179134,"date":"2024-11-08T23:17:20","date_gmt":"2024-11-08T15:17:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/179134\/"},"modified":"2024-11-08T23:17:21","modified_gmt":"2024-11-08T15:17:21","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%9ahv007-fdw_invalid_column_name%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/179134\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1aHV007 &#8211; fdw_invalid_column_name\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%9ahv007-fdw_invalid_column_name-GarauttyHE\">\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1aHV007 &#8211; fdw_invalid_column_name<\/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\u662f HV007 &#8211; fdw_invalid_column_name\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u8207\u5916\u90e8\u6578\u64da\u5305\u88dd\u5668\uff08Foreign Data Wrapper, FDW\uff09\u6709\u95dc\uff0c\u7576\u4f60\u5617\u8a66\u5f9e\u5916\u90e8\u6578\u64da\u6e90\u67e5\u8a62\u6578\u64da\u6642\uff0cPostgreSQL \u7121\u6cd5\u8b58\u5225\u67d0\u4e9b\u5217\u540d\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-GarauttyHE\">\u932f\u8aa4\u539f\u56e0\u5206\u6790<\/h2>\n<p>HV007 \u932f\u8aa4\u901a\u5e38\u767c\u751f\u5728\u4ee5\u4e0b\u60c5\u6cc1\uff1a<\/p>\n<ul>\n<li>\u67e5\u8a62\u4e2d\u4f7f\u7528\u7684\u5217\u540d\u5728\u5916\u90e8\u6578\u64da\u6e90\u4e2d\u4e0d\u5b58\u5728\u3002<\/li>\n<li>\u5217\u540d\u62fc\u5beb\u932f\u8aa4\u6216\u5927\u5c0f\u5beb\u4e0d\u6b63\u78ba\u3002<\/li>\n<li>\u5916\u90e8\u6578\u64da\u6e90\u7684\u7d50\u69cb\u5df2\u7d93\u6539\u8b8a\uff0c\u4f46\u5728 PostgreSQL \u4e2d\u7684\u5b9a\u7fa9\u672a\u66f4\u65b0\u3002<\/li>\n<li>FDW \u914d\u7f6e\u4e0d\u6b63\u78ba\uff0c\u5c0e\u81f4\u7121\u6cd5\u6b63\u78ba\u6620\u5c04\u5217\u540d\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u5047\u8a2d\u4f60\u6709\u4e00\u500b\u540d\u70ba <code>employees<\/code> \u7684\u5916\u90e8\u8868\uff0c\u4e26\u4e14\u4f60\u5617\u8a66\u57f7\u884c\u4ee5\u4e0b\u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT name, age FROM employees;<\/code><\/pre>\n<p>\u5982\u679c <code>employees<\/code> \u8868\u4e2d\u4e26\u4e0d\u5b58\u5728 <code>age<\/code> \u5217\uff0c\u5247\u6703\u5f15\u767c HV007 \u932f\u8aa4\u3002<\/p>\n<h2 id=\"%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88-GarauttyHE\">\u89e3\u6c7a\u65b9\u6848<\/h2>\n<p>\u8981\u4fee\u5fa9 HV007 \u932f\u8aa4\uff0c\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u6b65\u9a5f\u9032\u884c\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e5%88%97%e5%90%8d-GarauttyHE\">1. \u6aa2\u67e5\u5217\u540d<\/h3>\n<p>\u9996\u5148\uff0c\u78ba\u8a8d\u4f60\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528\u7684\u5217\u540d\u662f\u5426\u6b63\u78ba\u3002\u53ef\u4ee5\u901a\u904e\u67e5\u8a62\u5916\u90e8\u6578\u64da\u6e90\u7684\u7d50\u69cb\u4f86\u9a57\u8b49\u5217\u540d\uff1a<\/p>\n<pre><code>SELECT * FROM foreign_table LIMIT 1;<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u5e6b\u52a9\u4f60\u6aa2\u67e5\u6240\u6709\u53ef\u7528\u7684\u5217\u540d\uff0c\u78ba\u4fdd\u5b83\u5011\u8207\u4f60\u7684\u67e5\u8a62\u4e00\u81f4\u3002<\/p>\n<h3 id=\"2-%e6%9b%b4%e6%96%b0%e5%a4%96%e9%83%a8%e8%a1%a8%e7%b5%90%e6%a7%8b-GarauttyHE\">2. \u66f4\u65b0\u5916\u90e8\u8868\u7d50\u69cb<\/h3>\n<p>\u5982\u679c\u5916\u90e8\u6578\u64da\u6e90\u7684\u7d50\u69cb\u5df2\u7d93\u6539\u8b8a\uff0c\u5247\u9700\u8981\u5728 PostgreSQL \u4e2d\u66f4\u65b0\u5916\u90e8\u8868\u7684\u5b9a\u7fa9\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u4fee\u6539\u5916\u90e8\u8868\uff1a<\/p>\n<pre><code>ALTER FOREIGN TABLE foreign_table_name \n    ALTER COLUMN column_name TYPE new_data_type;<\/code><\/pre>\n<p>\u78ba\u4fdd\u6240\u6709\u5217\u540d\u548c\u6578\u64da\u985e\u578b\u90fd\u8207\u5916\u90e8\u6578\u64da\u6e90\u4e00\u81f4\u3002<\/p>\n<h3 id=\"3-%e6%aa%a2%e6%9f%a5-fdw-%e9%85%8d%e7%bd%ae-GarauttyHE\">3. \u6aa2\u67e5 FDW \u914d\u7f6e<\/h3>\n<p>\u5982\u679c\u4f60\u4f7f\u7528\u7684\u662f\u81ea\u5b9a\u7fa9\u7684 FDW\uff0c\u8acb\u6aa2\u67e5\u5176\u914d\u7f6e\u662f\u5426\u6b63\u78ba\u3002\u78ba\u4fdd\u6240\u6709\u5fc5\u8981\u7684\u53c3\u6578\u90fd\u5df2\u6b63\u78ba\u8a2d\u7f6e\uff0c\u4e26\u4e14\u80fd\u5920\u6b63\u78ba\u6620\u5c04\u5230\u5916\u90e8\u6578\u64da\u6e90\u7684\u5217\u3002<\/p>\n<h3 id=\"4-%e4%bd%bf%e7%94%a8%e6%ad%a3%e7%a2%ba%e7%9a%84%e5%a4%a7%e5%b0%8f%e5%af%ab-GarauttyHE\">4. \u4f7f\u7528\u6b63\u78ba\u7684\u5927\u5c0f\u5beb<\/h3>\n<p>PostgreSQL \u5c0d\u65bc\u5217\u540d\u7684\u5927\u5c0f\u5beb\u662f\u654f\u611f\u7684\u3002\u5982\u679c\u5916\u90e8\u6578\u64da\u6e90\u4e2d\u7684\u5217\u540d\u4f7f\u7528\u4e86\u5927\u5beb\u5b57\u6bcd\uff0c\u5247\u5728\u67e5\u8a62\u4e2d\u4e5f\u5fc5\u9808\u4f7f\u7528\u96d9\u5f15\u865f\u4f86\u4fdd\u7559\u5927\u5c0f\u5beb\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT \"Name\", \"Age\" FROM employees;<\/code><\/pre>\n<h2 id=\"%e7%a4%ba%e4%be%8b-GarauttyHE\">\u793a\u4f8b<\/h2>\n<p>\u5047\u8a2d\u4f60\u6709\u4e00\u500b\u5916\u90e8\u8868 <code>orders<\/code>\uff0c\u5176\u7d50\u69cb\u5982\u4e0b\uff1a<\/p>\n<pre><code>CREATE FOREIGN TABLE orders (\n    order_id integer,\n    customer_name text,\n    order_date date\n) SERVER foreign_server\nOPTIONS (table_name 'orders_table');<\/code><\/pre>\n<p>\u5982\u679c\u4f60\u57f7\u884c\u4ee5\u4e0b\u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT order_id, order_date, total_amount FROM orders;<\/code><\/pre>\n<p>\u7531\u65bc <code>total_amount<\/code> \u5217\u5728\u5916\u90e8\u8868\u4e2d\u4e0d\u5b58\u5728\uff0c\u5c07\u6703\u5f15\u767c HV007 \u932f\u8aa4\u3002\u4f60\u9700\u8981\u6aa2\u67e5\u5916\u90e8\u8868\u7684\u7d50\u69cb\uff0c\u4e26\u78ba\u4fdd\u67e5\u8a62\u4e2d\u7684\u5217\u540d\u6b63\u78ba\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-GarauttyHE\">\u7e3d\u7d50<\/h2>\n<p>HV007 &#8211; fdw_invalid_column_name \u932f\u8aa4\u901a\u5e38\u662f\u7531\u65bc\u5217\u540d\u4e0d\u5339\u914d\u6216\u5916\u90e8\u8868\u7d50\u69cb\u4e0d\u6b63\u78ba\u5f15\u8d77\u7684\u3002\u901a\u904e\u6aa2\u67e5\u5217\u540d\u3001\u66f4\u65b0\u5916\u90e8\u8868\u7d50\u69cb\u3001\u6aa2\u67e5 FDW \u914d\u7f6e\u4ee5\u53ca\u6ce8\u610f\u5927\u5c0f\u5beb\u554f\u984c\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u500b\u932f\u8aa4\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u670d\u52d9\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u4f60\u7684\u6578\u64da\u8655\u7406\u80fd\u529b\uff0c\u78ba\u4fdd\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u53ef\u9760\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc HV007 &#8211; fdw_invalid_column_name \u7684\u65b9\u6cd5\uff0c\u5e6b\u52a9\u60a8\u89e3\u6c7a\u5916\u90e8\u6578\u64da\u5305\u88dd\u5668\u4e2d\u7684\u5217\u540d\u554f\u984c\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-179134","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179134","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=179134"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179134\/revisions"}],"predecessor-version":[{"id":179135,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179134\/revisions\/179135"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=179134"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=179134"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=179134"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}