{"id":179010,"date":"2024-11-08T22:15:22","date_gmt":"2024-11-08T14:15:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/179010\/"},"modified":"2024-11-08T22:15:23","modified_gmt":"2024-11-08T14:15:23","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%9a42830-invalid_foreign_key%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/179010\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a42830 &#8211; invalid_foreign_key\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%9a42830-invalid_foreign_key%ef%bc%9f-MmsnXnnxlt\">\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc\uff1a42830 &#8211; invalid_foreign_key\uff1f<\/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 42830\uff0c\u8a72\u932f\u8aa4\u901a\u5e38\u8868\u793a\u7121\u6548\u7684\u5916\u9375\uff08invalid_foreign_key\uff09\u3002\u9019\u500b\u554f\u984c\u901a\u5e38\u767c\u751f\u5728\u5617\u8a66\u5275\u5efa\u6216\u4fee\u6539\u8868\u6642\uff0c\u5c24\u5176\u662f\u7576\u5916\u9375\u7d04\u675f\u7684\u53c3\u8003\u4e0d\u6b63\u78ba\u6642\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%e4%bb%a3%e7%a2%bc-42830-%e7%9a%84%e5%8e%9f%e5%9b%a0-MmsnXnnxlt\">\u932f\u8aa4\u4ee3\u78bc 42830 \u7684\u539f\u56e0<\/h2>\n<p>PostgreSQL \u7684\u5916\u9375\u7d04\u675f\u7528\u65bc\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\uff0c\u9019\u610f\u5473\u8457\u4e00\u500b\u8868\u4e2d\u7684\u67d0\u500b\u5b57\u6bb5\u5fc5\u9808\u53c3\u8003\u53e6\u4e00\u500b\u8868\u4e2d\u7684\u6709\u6548\u5b57\u6bb5\u3002\u7576\u4f60\u9047\u5230\u932f\u8aa4\u4ee3\u78bc 42830 \u6642\uff0c\u901a\u5e38\u662f\u7531\u65bc\u4ee5\u4e0b\u5e7e\u500b\u539f\u56e0\uff1a<\/p>\n<ul>\n<li><strong>\u53c3\u8003\u7684\u8868\u4e0d\u5b58\u5728\uff1a<\/strong>\u5982\u679c\u4f60\u5617\u8a66\u5275\u5efa\u4e00\u500b\u5916\u9375\u7d04\u675f\uff0c\u4f46\u53c3\u8003\u7684\u8868\u4e26\u4e0d\u5b58\u5728\uff0c\u5247\u6703\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u53c3\u8003\u7684\u5b57\u6bb5\u4e0d\u5b58\u5728\uff1a<\/strong>\u5373\u4f7f\u53c3\u8003\u7684\u8868\u5b58\u5728\uff0c\u5982\u679c\u6307\u5b9a\u7684\u5b57\u6bb5\u5728\u8a72\u8868\u4e2d\u4e0d\u5b58\u5728\uff0c\u4e5f\u6703\u5f15\u767c\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u5b57\u6bb5\u985e\u578b\u4e0d\u5339\u914d\uff1a<\/strong>\u5916\u9375\u5b57\u6bb5\u548c\u53c3\u8003\u5b57\u6bb5\u7684\u6578\u64da\u985e\u578b\u5fc5\u9808\u76f8\u540c\u3002\u5982\u679c\u985e\u578b\u4e0d\u5339\u914d\uff0c\u5247\u6703\u51fa\u73fe\u932f\u8aa4\u3002<\/li>\n<li><strong>\u5916\u9375\u7d04\u675f\u7684\u5b9a\u7fa9\u4e0d\u6b63\u78ba\uff1a<\/strong>\u5728\u5275\u5efa\u5916\u9375\u7d04\u675f\u6642\uff0c\u8a9e\u6cd5\u932f\u8aa4\u6216\u908f\u8f2f\u932f\u8aa4\u4e5f\u6703\u5c0e\u81f4\u6b64\u554f\u984c\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-42830-MmsnXnnxlt\">\u5982\u4f55\u4fee\u5fa9\u932f\u8aa4\u4ee3\u78bc 42830<\/h2>\n<p>\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc 42830 \u7684\u904e\u7a0b\u901a\u5e38\u6d89\u53ca\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e5%8f%83%e8%80%83%e7%9a%84%e8%a1%a8%e5%92%8c%e5%ad%97%e6%ae%b5-MmsnXnnxlt\">1. \u6aa2\u67e5\u53c3\u8003\u7684\u8868\u548c\u5b57\u6bb5<\/h3>\n<p>\u9996\u5148\uff0c\u78ba\u4fdd\u4f60\u6240\u53c3\u8003\u7684\u8868\u548c\u5b57\u6bb5\u78ba\u5be6\u5b58\u5728\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u67e5\u8a62\u4f86\u6aa2\u67e5\u8868\u7684\u7d50\u69cb\uff1a<\/p>\n<pre><code>SELECT column_name \nFROM information_schema.columns \nWHERE table_name = 'your_table_name';<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u78ba\u8a8d\u4f60\u6240\u53c3\u8003\u7684\u5b57\u6bb5\u662f\u5426\u5b58\u5728\u65bc\u6307\u5b9a\u7684\u8868\u4e2d\u3002<\/p>\n<h3 id=\"2-%e7%a2%ba%e8%aa%8d%e5%ad%97%e6%ae%b5%e9%a1%9e%e5%9e%8b-MmsnXnnxlt\">2. \u78ba\u8a8d\u5b57\u6bb5\u985e\u578b<\/h3>\n<p>\u63a5\u4e0b\u4f86\uff0c\u6aa2\u67e5\u5916\u9375\u5b57\u6bb5\u548c\u53c3\u8003\u5b57\u6bb5\u7684\u6578\u64da\u985e\u578b\u662f\u5426\u4e00\u81f4\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8a62\u4f86\u6aa2\u67e5\u5b57\u6bb5\u7684\u6578\u64da\u985e\u578b\uff1a<\/p>\n<pre><code>SELECT column_name, data_type \nFROM information_schema.columns \nWHERE table_name = 'your_table_name';<\/code><\/pre>\n<p>\u78ba\u4fdd\u5169\u500b\u5b57\u6bb5\u7684\u6578\u64da\u985e\u578b\u76f8\u540c\uff0c\u4f8b\u5982\uff0c\u5982\u679c\u4e00\u500b\u5b57\u6bb5\u662f\u6574\u6578\u985e\u578b\uff0c\u53e6\u4e00\u500b\u5b57\u6bb5\u4e5f\u5fc5\u9808\u662f\u6574\u6578\u985e\u578b\u3002<\/p>\n<h3 id=\"3-%e4%bf%ae%e6%ad%a3%e5%a4%96%e9%8d%b5%e7%b4%84%e6%9d%9f%e7%9a%84%e5%ae%9a%e7%be%a9-MmsnXnnxlt\">3. \u4fee\u6b63\u5916\u9375\u7d04\u675f\u7684\u5b9a\u7fa9<\/h3>\n<p>\u5982\u679c\u4ee5\u4e0a\u5169\u6b65\u90fd\u6c92\u6709\u554f\u984c\uff0c\u90a3\u9ebc\u53ef\u80fd\u662f\u5916\u9375\u7d04\u675f\u7684\u5b9a\u7fa9\u5b58\u5728\u932f\u8aa4\u3002\u6aa2\u67e5\u4f60\u7684 SQL \u8a9e\u53e5\uff0c\u78ba\u4fdd\u8a9e\u6cd5\u6b63\u78ba\u3002\u4f8b\u5982\uff0c\u5275\u5efa\u5916\u9375\u7d04\u675f\u7684\u6b63\u78ba\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>ALTER TABLE child_table \nADD CONSTRAINT fk_child_parent \nFOREIGN KEY (child_id) \nREFERENCES parent_table (id);<\/code><\/pre>\n<p>\u78ba\u4fdd\u5728\u9019\u500b\u8a9e\u53e5\u4e2d\uff0cchild_table \u548c parent_table \u90fd\u662f\u6b63\u78ba\u7684\u8868\u540d\uff0cchild_id \u548c id \u662f\u6b63\u78ba\u7684\u5b57\u6bb5\u540d\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-MmsnXnnxlt\">\u7e3d\u7d50<\/h2>\n<p>PostgreSQL \u932f\u8aa4\u4ee3\u78bc 42830 \u901a\u5e38\u662f\u7531\u65bc\u7121\u6548\u7684\u5916\u9375\u7d04\u675f\u5f15\u8d77\u7684\u3002\u901a\u904e\u6aa2\u67e5\u53c3\u8003\u7684\u8868\u548c\u5b57\u6bb5\u3001\u78ba\u8a8d\u5b57\u6bb5\u985e\u578b\u4ee5\u53ca\u4fee\u6b63\u5916\u9375\u7d04\u675f\u7684\u5b9a\u7fa9\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u500b\u554f\u984c\u3002\u5c0d\u65bc\u4f7f\u7528 PostgreSQL \u7684\u958b\u767c\u8005\u4f86\u8aaa\uff0c\u7406\u89e3\u9019\u4e9b\u57fa\u672c\u6982\u5ff5\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u5728\u9047\u5230\u554f\u984c\u6642\u8fc5\u901f\u627e\u5230\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<p>\u5982\u679c\u4f60\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u7528\u6236\u3002\u7121\u8ad6\u662f\u6578\u64da\u5eab\u7ba1\u7406\u9084\u662f\u7db2\u7ad9\u6258\u7ba1\uff0c\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u4f60\u63d0\u4f9b\u53ef\u9760\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u4fee\u5fa9 PostgreSQL \u932f\u8aa4\u4ee3\u78bc 42830 &#8211; invalid_foreign_key\uff0c\u89e3\u6c7a\u5916\u9375\u7d04\u675f\u554f\u984c\uff0c\u78ba\u4fdd\u6578\u64da\u5eab\u5b8c\u6574\u6027\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-179010","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179010","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=179010"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179010\/revisions"}],"predecessor-version":[{"id":179011,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179010\/revisions\/179011"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=179010"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=179010"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=179010"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}