{"id":178816,"date":"2024-11-08T21:08:19","date_gmt":"2024-11-08T13:08:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/178816\/"},"modified":"2024-11-08T21:08:20","modified_gmt":"2024-11-08T13:08:20","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9postgresql%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc%ef%bc%9a23503-foreign_key_violation%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/178816\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc\uff1a23503 &#8211; foreign_key_violation\uff1f"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9postgresql%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc%ef%bc%9a23503-foreign_key_violation%ef%bc%9f-JUJUkIlEON\">\u5982\u4f55\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc\uff1a23503 &#8211; foreign_key_violation\uff1f<\/h1>\n<p>\u5728\u4f7f\u7528PostgreSQL\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\u78bc23503\uff0c\u9019\u662f\u4e00\u500b\u8207\u5916\u9375\u7d04\u675f\u9055\u53cd\u6709\u95dc\u7684\u932f\u8aa4\u3002\u7576\u4f60\u5617\u8a66\u63d2\u5165\u6216\u66f4\u65b0\u4e00\u689d\u8a18\u9304\u6642\uff0c\u5982\u679c\u8a72\u8a18\u9304\u7684\u5916\u9375\u53c3\u8003\u4e86\u4e00\u500b\u4e0d\u5b58\u5728\u7684\u4e3b\u9375\uff0cPostgreSQL\u5c31\u6703\u8fd4\u56de\u9019\u500b\u932f\u8aa4\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=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%a4%96%e9%8d%b5%e7%b4%84%e6%9d%9f%ef%bc%9f-JUJUkIlEON\">\u4ec0\u9ebc\u662f\u5916\u9375\u7d04\u675f\uff1f<\/h2>\n<p>\u5916\u9375\u7d04\u675f\u662f\u4e00\u7a2e\u6578\u64da\u5b8c\u6574\u6027\u7d04\u675f\uff0c\u7528\u65bc\u78ba\u4fdd\u6578\u64da\u5eab\u4e2d\u5169\u500b\u8868\u4e4b\u9593\u7684\u95dc\u806f\u6027\u3002\u7576\u4e00\u500b\u8868\u4e2d\u7684\u67d0\u500b\u5b57\u6bb5\uff08\u5916\u9375\uff09\u5f15\u7528\u53e6\u4e00\u500b\u8868\u4e2d\u7684\u4e3b\u9375\u6642\uff0c\u9019\u7a2e\u95dc\u4fc2\u5c31\u88ab\u7a31\u70ba\u5916\u9375\u7d04\u675f\u3002\u9019\u6a23\u53ef\u4ee5\u9632\u6b62\u5728\u4e00\u500b\u8868\u4e2d\u63d2\u5165\u4e0d\u7b26\u5408\u53e6\u4e00\u500b\u8868\u4e2d\u6578\u64da\u7684\u8a18\u9304\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc23503%e7%9a%84%e5%8e%9f%e5%9b%a0-JUJUkIlEON\">\u932f\u8aa4\u4ee3\u78bc23503\u7684\u539f\u56e0<\/h2>\n<p>\u7576\u4f60\u5728PostgreSQL\u4e2d\u9047\u5230\u932f\u8aa4\u4ee3\u78bc23503\u6642\uff0c\u901a\u5e38\u662f\u56e0\u70ba\u4ee5\u4e0b\u5e7e\u500b\u539f\u56e0\uff1a<\/p>\n<ul>\n<li><strong>\u63d2\u5165\u6216\u66f4\u65b0\u7684\u5916\u9375\u503c\u4e0d\u5b58\u5728\uff1a<\/strong>\u7576\u4f60\u5617\u8a66\u63d2\u5165\u4e00\u689d\u8a18\u9304\uff0c\u4e26\u4e14\u8a72\u8a18\u9304\u7684\u5916\u9375\u503c\u5728\u53c3\u8003\u7684\u4e3b\u9375\u8868\u4e2d\u4e0d\u5b58\u5728\u6642\uff0c\u5c31\u6703\u51fa\u73fe\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u522a\u9664\u4e3b\u9375\u8a18\u9304\uff1a<\/strong>\u5982\u679c\u4f60\u522a\u9664\u4e86\u67d0\u500b\u8868\u4e2d\u7684\u4e3b\u9375\u8a18\u9304\uff0c\u800c\u8a72\u8a18\u9304\u4ecd\u7136\u88ab\u5176\u4ed6\u8868\u4e2d\u7684\u5916\u9375\u5f15\u7528\uff0c\u5247\u5728\u9019\u4e9b\u8868\u4e2d\u9032\u884c\u63d2\u5165\u6216\u66f4\u65b0\u64cd\u4f5c\u6642\u4e5f\u6703\u5f15\u767c\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u6578\u64da\u985e\u578b\u4e0d\u5339\u914d\uff1a<\/strong>\u5916\u9375\u548c\u4e3b\u9375\u7684\u6578\u64da\u985e\u578b\u5fc5\u9808\u4e00\u81f4\u3002\u5982\u679c\u4e0d\u4e00\u81f4\uff0c\u5247\u6703\u5c0e\u81f4\u7d04\u675f\u9055\u53cd\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%bc23503-JUJUkIlEON\">\u5982\u4f55\u4fee\u5fa9\u932f\u8aa4\u4ee3\u78bc23503<\/h2>\n<p>\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc23503\u7684\u65b9\u6cd5\u53d6\u6c7a\u65bc\u5177\u9ad4\u7684\u60c5\u6cc1\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u89e3\u6c7a\u65b9\u6848\uff1a<\/p>\n<h3 id=\"1-%e7%a2%ba%e8%aa%8d%e5%a4%96%e9%8d%b5%e5%80%bc%e7%9a%84%e5%ad%98%e5%9c%a8%e6%80%a7-JUJUkIlEON\">1. \u78ba\u8a8d\u5916\u9375\u503c\u7684\u5b58\u5728\u6027<\/h3>\n<p>\u5728\u63d2\u5165\u6216\u66f4\u65b0\u6578\u64da\u4e4b\u524d\uff0c\u9996\u5148\u8981\u78ba\u8a8d\u5916\u9375\u503c\u662f\u5426\u5b58\u5728\u65bc\u4e3b\u9375\u8868\u4e2d\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u67e5\u8a62\u4f86\u6aa2\u67e5\uff1a<\/p>\n<pre><code>SELECT * FROM parent_table WHERE id = 'your_foreign_key_value';<\/code><\/pre>\n<p>\u5982\u679c\u67e5\u8a62\u7d50\u679c\u70ba\u7a7a\uff0c\u5247\u9700\u8981\u5148\u5728\u4e3b\u9375\u8868\u4e2d\u63d2\u5165\u76f8\u61c9\u7684\u8a18\u9304\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8on-delete-cascade-JUJUkIlEON\">2. \u4f7f\u7528ON DELETE CASCADE<\/h3>\n<p>\u5982\u679c\u4f60\u5e0c\u671b\u5728\u522a\u9664\u4e3b\u9375\u8a18\u9304\u6642\u81ea\u52d5\u522a\u9664\u6240\u6709\u5f15\u7528\u8a72\u8a18\u9304\u7684\u5916\u9375\u8a18\u9304\uff0c\u53ef\u4ee5\u5728\u5275\u5efa\u5916\u9375\u7d04\u675f\u6642\u4f7f\u7528ON DELETE CASCADE\u9078\u9805\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>ALTER TABLE child_table\nADD CONSTRAINT fk_parent\nFOREIGN KEY (parent_id)\nREFERENCES parent_table(id)\nON DELETE CASCADE;<\/code><\/pre>\n<h3 id=\"3-%e7%a2%ba%e4%bf%9d%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e4%b8%80%e8%87%b4-JUJUkIlEON\">3. \u78ba\u4fdd\u6578\u64da\u985e\u578b\u4e00\u81f4<\/h3>\n<p>\u6aa2\u67e5\u5916\u9375\u548c\u4e3b\u9375\u7684\u6578\u64da\u985e\u578b\u662f\u5426\u4e00\u81f4\u3002\u5982\u679c\u4e0d\u4e00\u81f4\uff0c\u5247\u9700\u8981\u9032\u884c\u76f8\u61c9\u7684\u6578\u64da\u985e\u578b\u8f49\u63db\u6216\u4fee\u6539\u3002<\/p>\n<h3 id=\"4-%e4%bf%ae%e6%ad%a3%e6%95%b8%e6%93%9a-JUJUkIlEON\">4. \u4fee\u6b63\u6578\u64da<\/h3>\n<p>\u5982\u679c\u5916\u9375\u503c\u4e0d\u6b63\u78ba\uff0c\u5247\u9700\u8981\u4fee\u6b63\u6578\u64da\u3002\u9019\u53ef\u80fd\u6d89\u53ca\u5230\u66f4\u65b0\u6216\u522a\u9664\u4e0d\u6b63\u78ba\u7684\u8a18\u9304\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-JUJUkIlEON\">\u7e3d\u7d50<\/h2>\n<p>PostgreSQL\u932f\u8aa4\u4ee3\u78bc23503 &#8211; foreign_key_violation\u901a\u5e38\u662f\u7531\u65bc\u5916\u9375\u7d04\u675f\u9055\u53cd\u6240\u5f15\u8d77\u7684\u3002\u901a\u904e\u78ba\u8a8d\u5916\u9375\u503c\u7684\u5b58\u5728\u6027\u3001\u4f7f\u7528ON DELETE CASCADE\u3001\u78ba\u4fdd\u6578\u64da\u985e\u578b\u4e00\u81f4\u4ee5\u53ca\u4fee\u6b63\u6578\u64da\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u4e00\u554f\u984c\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u6578\u64da\u5eab\u7ba1\u7406\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u65b9\u6848\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u6574\u9ad4\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc23503 &#8211; foreign_key_violation\uff0c\u78ba\u4fdd\u6578\u64da\u5b8c\u6574\u6027\u4e26\u89e3\u6c7a\u5916\u9375\u7d04\u675f\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-178816","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178816","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=178816"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178816\/revisions"}],"predecessor-version":[{"id":178817,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178816\/revisions\/178817"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=178816"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=178816"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=178816"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}