{"id":21428,"date":"2024-01-02T09:13:23","date_gmt":"2024-01-02T09:13:23","guid":{"rendered":"https:\/\/server.hk\/blog\/21428\/"},"modified":"2024-11-14T10:34:35","modified_gmt":"2024-11-14T02:34:35","slug":"how-to-fix-postgresql-error-code-42p08-ambiguous_parameter","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/21428\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a42P08 – ambiguous_parameter"},"content":{"rendered":"

\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a42P08 – ambiguous_parameter<\/h1>\n

PostgreSQL \u662f\u4e00\u500b\u529f\u80fd\u5f37\u5927\u7684\u958b\u6e90\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u61c9\u7528\u7a0b\u5f0f\u4e2d\u3002\u7136\u800c\uff0c\u548c\u6240\u6709\u8edf\u4ef6\u4e00\u6a23\uff0c\u5b83\u53ef\u80fd\u6703\u9047\u5230\u4e00\u4e9b\u932f\u8aa4\uff0c\u5f71\u97ff\u5176\u6b63\u5e38\u529f\u80fd\u3002\u5176\u4e2d\u4e00\u500b\u932f\u8aa4\u662f PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a42P08 – ambiguous_parameter\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u5c07\u63a2\u8a0e\u8a72\u932f\u8aa4\u7684\u542b\u7fa9\u53ca\u5982\u4f55\u4fee\u5fa9\u5b83\u3002<\/p>\n

\u4e86\u89e3\u932f\u8aa4<\/h2>\n

PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a42P08 – ambiguous_parameter \u7576\u67e5\u8a62\u4e2d\u5305\u542b\u6a21\u7cca\u7684\u53c3\u6578\u6642\u6703\u767c\u751f\u3002\u9019\u610f\u5473\u8457\u67e5\u8a62\u4e2d\u4f7f\u7528\u7684\u53c3\u6578\u540d\u7a31\u4e26\u4e0d\u552f\u4e00\uff0c\u53ef\u80fd\u6703\u6307\u5411\u6578\u64da\u5eab\u4e2d\u7684\u591a\u500b\u5c0d\u8c61\u3002PostgreSQL \u7121\u6cd5\u78ba\u5b9a\u8a72\u53c3\u6578\u6307\u5411\u54ea\u500b\u5c0d\u8c61\uff0c\u5f9e\u800c\u5c0e\u81f4\u932f\u8aa4\u3002<\/p>\n

\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u7684\u6578\u64da\u5eab\u4e2d\u6709\u5169\u500b\u8868\uff1a “customers” \u548c “orders”\u3002\u9019\u5169\u500b\u8868\u90fd\u6709\u4e00\u500b\u540d\u70ba “id” \u7684\u5217\u3002\u5982\u679c\u6211\u5011\u57f7\u884c\u4e00\u500b\u5f15\u7528 “id” \u5217\u7684\u67e5\u8a62\u800c\u672a\u6307\u5b9a\u8868\u540d\uff0cPostgreSQL \u5c07\u6703\u9047\u5230 ambiguous_parameter \u932f\u8aa4\uff0c\u56e0\u70ba\u5b83\u4e0d\u77e5\u9053\u6211\u5011\u6307\u7684\u662f\u54ea\u500b “id” \u5217\u3002<\/p>\n

\u89e3\u6c7a\u932f\u8aa4<\/h2>\n

\u8981\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a42P08 – ambiguous_parameter\uff0c\u6211\u5011\u9700\u8981\u63d0\u4f9b\u8db3\u5920\u7684\u4fe1\u606f\u8b93 PostgreSQL \u78ba\u5b9a\u8a72\u53c3\u6578\u6307\u5411\u7684\u6b63\u78ba\u5c0d\u8c61\u3002\u4ee5\u4e0b\u662f\u5e7e\u500b\u89e3\u6c7a\u6b64\u932f\u8aa4\u7684\u65b9\u6cd5\uff1a<\/p>\n

\u6307\u5b9a\u8868\u540d<\/h3>\n

\u6700\u7c21\u55ae\u7684\u89e3\u6c7a\u65b9\u6848\u662f\u5728\u67e5\u8a62\u4e2d\u5f15\u7528\u5217\u6642\u660e\u78ba\u6307\u5b9a\u8868\u540d\u3002\u901a\u904e\u5c07\u5217\u540d\u524d\u7db4\u70ba\u8868\u540d\uff0cPostgreSQL \u53ef\u4ee5\u8b58\u5225\u6b63\u78ba\u7684\u5c0d\u8c61\uff0c\u6d88\u9664\u6a21\u7cca\u6027\u3002\u4f8b\u5982\uff1a<\/p>\n

SELECT customers.id FROM customers;<\/code><\/pre>\n
\u5728\u6b64\u67e5\u8a62\u4e2d\uff0c\u6211\u5011\u660e\u78ba\u6307\u5b9a\u8981\u5f9e “customers” \u8868\u4e2d\u7372\u53d6 “id” \u5217\uff0c\u5f9e\u800c\u6d88\u9664\u4e86\u4efb\u4f55\u6a21\u7cca\u6027\u3002<\/p>\n
\u4f7f\u7528\u8868\u5225\u540d<\/h3>\n
\u5982\u679c\u60a8\u5728\u67e5\u8a62\u4e2d\u9023\u63a5\u591a\u500b\u8868\uff0c\u5247\u53ef\u4ee5\u4f7f\u7528\u8868\u5225\u540d\u4f86\u5340\u5206\u540c\u540d\u7684\u5217\u3002\u8868\u5225\u540d\u63d0\u4f9b\u4e86\u4e00\u7a2e\u7c21\u5beb\u65b9\u5f0f\uff0c\u7528\u65bc\u5728\u67e5\u8a62\u4e2d\u5f15\u7528\u8868\u3002\u4ee5\u4e0b\u662f\u793a\u4f8b\uff1a<\/p>\n
SELECT c.id, o.id FROM customers c JOIN orders o ON c.id = o.customer_id;<\/code><\/pre>\n
\u5728\u6b64\u67e5\u8a62\u4e2d\uff0c\u6211\u5011\u70ba “customers” \u8868\u6307\u5b9a\u5225\u540d “c”\uff0c\u70ba “orders” \u8868\u6307\u5b9a\u5225\u540d “o”\u3002\u901a\u904e\u4f7f\u7528\u9019\u4e9b\u5225\u540d\uff0c\u6211\u5011\u53ef\u4ee5\u5728\u4e0d\u7522\u751f\u6a21\u7cca\u7684\u60c5\u6cc1\u4e0b\u5f15\u7528\u6bcf\u500b\u8868\u7684 “id” \u5217\u3002<\/p>\n
\u7528\u8868\u540d\u9650\u5b9a\u5217\u540d<\/h3>\n
\u53e6\u4e00\u7a2e\u65b9\u6cd5\u662f\u5728\u67e5\u8a62\u4e2d\u7528\u8868\u540d\u9650\u5b9a\u5217\u540d\u3002\u9019\u6d89\u53ca\u5728\u5217\u540d\u4e4b\u524d\u52a0\u4e0a\u8868\u540d\uff0c\u4e26\u7528\u9ede\u5206\u9694\u3002\u4ee5\u4e0b\u662f\u793a\u4f8b\uff1a<\/p>\n
SELECT customers.id FROM customers, orders WHERE customers.id = orders.customer_id;<\/code><\/pre>\n
\u5728\u6b64\u67e5\u8a62\u4e2d\uff0c\u6211\u5011\u7528 “customers” \u8868\u9650\u5b9a “id” \u5217\uff0c\u4f7f\u5176\u4e0d\u518d\u6a21\u7cca\u3002<\/p>\n
\u7d50\u8ad6<\/h2>\n
\u901a\u904e\u63d0\u4f9b\u8db3\u5920\u7684\u4fe1\u606f\u8b93 PostgreSQL \u78ba\u5b9a\u53c3\u6578\u6307\u5411\u7684\u6b63\u78ba\u5c0d\u8c61\uff0c\u6211\u5011\u53ef\u4ee5\u89e3\u6c7a PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a42P08 – ambiguous_parameter\u3002\u901a\u904e\u6307\u5b9a\u8868\u540d\u3001\u4f7f\u7528\u8868\u5225\u540d\u6216\u7528\u8868\u540d\u9650\u5b9a\u5217\uff0c\u6211\u5011\u53ef\u4ee5\u6d88\u9664\u6a21\u7cca\u6027\u4e26\u4fee\u5fa9\u8a72\u932f\u8aa4\u3002\u8acb\u8a18\u4f4f\uff0c\u5728\u67e5\u8a62\u4e2d\u59cb\u7d42\u4fdd\u6301\u660e\u78ba\uff0c\u4ee5\u907f\u514d\u9047\u5230\u6b64\u932f\u8aa4\u3002<\/p>\n
\u5982\u9700\u66f4\u591a\u6709\u95dc VPS \u8a17\u7ba1\u89e3\u6c7a\u65b9\u6848\u7684\u4fe1\u606f\uff0c\u8acb\u8003\u616e Server.HK<\/a>\u3002\u4ed6\u5011\u63d0\u4f9b\u53ef\u9760\u4e14\u9ad8\u6548\u7684 VPS \u8a17\u7ba1\u670d\u52d9\uff0c\u5c08\u70ba\u6eff\u8db3\u60a8\u7684\u5177\u9ad4\u9700\u6c42\u800c\u8a2d\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5982\u4f55\u4fee\u5fa9 PostgreSQL ...<\/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-21428","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21428","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=21428"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21428\/revisions"}],"predecessor-version":[{"id":24060,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21428\/revisions\/24060"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=21428"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=21428"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=21428"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}