{"id":179168,"date":"2024-11-08T23:34:20","date_gmt":"2024-11-08T15:34:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/179168\/"},"modified":"2024-11-08T23:34:21","modified_gmt":"2024-11-08T15:34:21","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%9ahv021-fdw_inconsistent_descriptor_information%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/179168\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1aHV021 &#8211; fdw_inconsistent_descriptor_information\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%9ahv021-fdw_inconsistent_descriptor_information-TOuuAYLzyL\">\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1aHV021 &#8211; fdw_inconsistent_descriptor_information<\/h1>\n<p>\u5728\u4f7f\u7528 PostgreSQL \u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\u4ee3\u78bc\u3002\u5176\u4e2d\uff0c\u932f\u8aa4\u4ee3\u78bc HV021 &#8211; fdw_inconsistent_descriptor_information \u662f\u4e00\u500b\u76f8\u5c0d\u5e38\u898b\u7684\u554f\u984c\uff0c\u7279\u5225\u662f\u5728\u4f7f\u7528\u5916\u90e8\u6578\u64da\u5305\uff08Foreign Data Wrapper, FDW\uff09\u6642\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u8a72\u932f\u8aa4\u7684\u6210\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc-hv021-%e7%9a%84%e8%83%8c%e6%99%af-TOuuAYLzyL\">\u932f\u8aa4\u4ee3\u78bc HV021 \u7684\u80cc\u666f<\/h2>\n<p>HV021 \u932f\u8aa4\u901a\u5e38\u51fa\u73fe\u5728\u4f7f\u7528 FDW \u9032\u884c\u8de8\u6578\u64da\u5eab\u67e5\u8a62\u6642\u3002FDW \u5141\u8a31 PostgreSQL \u9023\u63a5\u5230\u5176\u4ed6\u6578\u64da\u6e90\uff0c\u5982\u5176\u4ed6 PostgreSQL \u6578\u64da\u5eab\u6216\u5176\u4ed6\u985e\u578b\u7684\u6578\u64da\u5eab\uff08\u5982 MySQL\u3001Oracle \u7b49\uff09\u3002\u7576 PostgreSQL \u5617\u8a66\u5f9e\u5916\u90e8\u6578\u64da\u6e90\u7372\u53d6\u6578\u64da\u6642\uff0c\u5982\u679c\u767c\u73fe\u63cf\u8ff0\u7b26\u4fe1\u606f\u4e0d\u4e00\u81f4\uff0c\u5c31\u6703\u5f15\u767c HV021 \u932f\u8aa4\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e7%9a%84%e6%88%90%e5%9b%a0-TOuuAYLzyL\">\u932f\u8aa4\u7684\u6210\u56e0<\/h2>\n<p>HV021 \u932f\u8aa4\u7684\u4e3b\u8981\u6210\u56e0\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u985e\u578b\u4e0d\u5339\u914d\uff1a<\/strong>\u7576\u5916\u90e8\u6578\u64da\u6e90\u4e2d\u7684\u6578\u64da\u985e\u578b\u8207 PostgreSQL \u4e2d\u5b9a\u7fa9\u7684\u6578\u64da\u985e\u578b\u4e0d\u4e00\u81f4\u6642\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u8868\u7d50\u69cb\u8b8a\u66f4\uff1a<\/strong>\u5982\u679c\u5916\u90e8\u6578\u64da\u6e90\u7684\u8868\u7d50\u69cb\u767c\u751f\u8b8a\u66f4\uff08\u4f8b\u5982\uff0c\u6dfb\u52a0\u6216\u522a\u9664\u5217\uff09\uff0c\u800c PostgreSQL \u4e2d\u7684 FDW \u63cf\u8ff0\u7b26\u672a\u66f4\u65b0\uff0c\u5247\u6703\u51fa\u73fe\u4e0d\u4e00\u81f4\u7684\u60c5\u6cc1\u3002<\/li>\n<li><strong>FDW \u914d\u7f6e\u932f\u8aa4\uff1a<\/strong>\u4e0d\u6b63\u78ba\u7684 FDW \u914d\u7f6e\u6216\u53c3\u6578\u8a2d\u7f6e\u4e5f\u53ef\u80fd\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9-hv021-%e9%8c%af%e8%aa%a4-TOuuAYLzyL\">\u5982\u4f55\u4fee\u5fa9 HV021 \u932f\u8aa4<\/h2>\n<p>\u4fee\u5fa9 HV021 \u932f\u8aa4\u7684\u6b65\u9a5f\u5982\u4e0b\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-TOuuAYLzyL\">1. \u6aa2\u67e5\u6578\u64da\u985e\u578b<\/h3>\n<p>\u9996\u5148\uff0c\u6aa2\u67e5\u5916\u90e8\u6578\u64da\u6e90\u4e2d\u76f8\u61c9\u5217\u7684\u6578\u64da\u985e\u578b\u3002\u78ba\u4fdd\u5b83\u5011\u8207 PostgreSQL \u4e2d\u7684\u5b9a\u7fa9\u4e00\u81f4\u3002\u4f8b\u5982\uff0c\u5982\u679c\u5916\u90e8\u6578\u64da\u6e90\u4e2d\u7684\u67d0\u5217\u662f\u6574\u6578\u985e\u578b\uff0c\u800c\u5728 PostgreSQL \u4e2d\u5b9a\u7fa9\u70ba\u6587\u672c\u985e\u578b\uff0c\u5247\u9700\u8981\u9032\u884c\u8abf\u6574\u3002<\/p>\n<pre><code>-- \u6aa2\u67e5\u5916\u90e8\u6578\u64da\u6e90\u7684\u6578\u64da\u985e\u578b\nSELECT column_name, data_type \nFROM information_schema.columns \nWHERE table_name = 'your_table_name';<\/code><\/pre>\n<h3 id=\"2-%e6%9b%b4%e6%96%b0-fdw-%e6%8f%8f%e8%bf%b0%e7%ac%a6-TOuuAYLzyL\">2. \u66f4\u65b0 FDW \u63cf\u8ff0\u7b26<\/h3>\n<p>\u5982\u679c\u5916\u90e8\u6578\u64da\u6e90\u7684\u8868\u7d50\u69cb\u767c\u751f\u8b8a\u66f4\uff0c\u5247\u9700\u8981\u66f4\u65b0 PostgreSQL \u4e2d\u7684 FDW \u63cf\u8ff0\u7b26\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u91cd\u65b0\u5275\u5efa\u6216\u66f4\u65b0 FDW \u63cf\u8ff0\u7b26\uff1a<\/p>\n<pre><code>-- \u66f4\u65b0 FDW \u63cf\u8ff0\u7b26\nALTER FOREIGN TABLE your_foreign_table_name \n    OPTIONS (SET option_name 'new_value');<\/code><\/pre>\n<h3 id=\"3-%e6%aa%a2%e6%9f%a5-fdw-%e9%85%8d%e7%bd%ae-TOuuAYLzyL\">3. \u6aa2\u67e5 FDW \u914d\u7f6e<\/h3>\n<p>\u78ba\u4fdd FDW \u7684\u914d\u7f6e\u6b63\u78ba\u7121\u8aa4\u3002\u6aa2\u67e5\u9023\u63a5\u5b57\u7b26\u4e32\u3001\u7528\u6236\u540d\u548c\u5bc6\u78bc\u7b49\u8a2d\u7f6e\uff0c\u78ba\u4fdd\u5b83\u5011\u80fd\u5920\u6b63\u78ba\u9023\u63a5\u5230\u5916\u90e8\u6578\u64da\u6e90\u3002<\/p>\n<pre><code>-- \u6aa2\u67e5 FDW \u914d\u7f6e\nSELECT * FROM pg_foreign_data_wrapper;<\/code><\/pre>\n<h3 id=\"4-%e6%b8%ac%e8%a9%a6%e9%80%a3%e6%8e%a5-TOuuAYLzyL\">4. \u6e2c\u8a66\u9023\u63a5<\/h3>\n<p>\u5728\u9032\u884c\u4e0a\u8ff0\u66f4\u6539\u5f8c\uff0c\u6e2c\u8a66\u8207\u5916\u90e8\u6578\u64da\u6e90\u7684\u9023\u63a5\uff0c\u78ba\u4fdd\u4e00\u5207\u6b63\u5e38\u904b\u884c\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u6e2c\u8a66\uff1a<\/p>\n<pre><code>-- \u6e2c\u8a66\u67e5\u8a62\nSELECT * FROM your_foreign_table_name LIMIT 10;<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-TOuuAYLzyL\">\u7e3d\u7d50<\/h2>\n<p>HV021 &#8211; fdw_inconsistent_descriptor_information \u932f\u8aa4\u901a\u5e38\u662f\u7531\u65bc\u6578\u64da\u985e\u578b\u4e0d\u5339\u914d\u3001\u8868\u7d50\u69cb\u8b8a\u66f4\u6216 FDW \u914d\u7f6e\u932f\u8aa4\u5f15\u8d77\u7684\u3002\u901a\u904e\u6aa2\u67e5\u6578\u64da\u985e\u578b\u3001\u66f4\u65b0 FDW \u63cf\u8ff0\u7b26\u3001\u6aa2\u67e5\u914d\u7f6e\u4ee5\u53ca\u6e2c\u8a66\u9023\u63a5\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u4fee\u5fa9\u6b64\u932f\u8aa4\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u81f3\u95dc\u91cd\u8981\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc HV021\uff0c\u89e3\u6c7a fdw_inconsistent_descriptor_information \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-179168","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179168","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=179168"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179168\/revisions"}],"predecessor-version":[{"id":179169,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179168\/revisions\/179169"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=179168"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=179168"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=179168"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}