{"id":177873,"date":"2024-11-08T16:16:22","date_gmt":"2024-11-08T08:16:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/177873\/"},"modified":"2024-11-08T16:16:23","modified_gmt":"2024-11-08T08:16:23","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41217-sqlstate-23000%ef%bc%88er_row_is_referenced%ef%bc%89%e7%84%a1%e6%b3%95%e5%88%aa%e9%99%a4%e6%88%96%e6%9b%b4%e6%96%b0%e7%88%b6%e8%a1%8c","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/177873\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41217 &#8211; SQLSTATE: 23000\uff08ER_ROW_IS_REFERENCED\uff09\u7121\u6cd5\u522a\u9664\u6216\u66f4\u65b0\u7236\u884c\uff1a\u5916\u9375\u7d04\u675f\u5931\u6557"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41217-sqlstate-23000%ef%bc%88er_row_is_referenced%ef%bc%89%e7%84%a1%e6%b3%95%e5%88%aa%e9%99%a4%e6%88%96%e6%9b%b4%e6%96%b0%e7%88%b6%e8%a1%8c-hkmNJUhXcc\">\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41217 &#8211; SQLSTATE: 23000\uff08ER_ROW_IS_REFERENCED\uff09\u7121\u6cd5\u522a\u9664\u6216\u66f4\u65b0\u7236\u884c\uff1a\u5916\u9375\u7d04\u675f\u5931\u6557<\/h1>\n<p>\u5728\u4f7f\u7528MySQL\u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u7d93\u5e38\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u932f\u8aa41217\uff0c\u8a72\u932f\u8aa4\u7684\u4ee3\u78bc\u70baSQLSTATE: 23000\uff0c\u8868\u793a\u7121\u6cd5\u522a\u9664\u6216\u66f4\u65b0\u7236\u884c\uff0c\u56e0\u70ba\u5916\u9375\u7d04\u675f\u5931\u6557\u3002\u9019\u901a\u5e38\u767c\u751f\u5728\u5617\u8a66\u522a\u9664\u6216\u66f4\u65b0\u4e00\u500b\u8868\u4e2d\u7684\u884c\u6642\uff0c\u800c\u8a72\u884c\u5728\u53e6\u4e00\u500b\u8868\u4e2d\u88ab\u5f15\u7528\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u4e00\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-hkmNJUhXcc\">\u932f\u8aa4\u539f\u56e0\u5206\u6790<\/h2>\n<p>MySQL\u4e2d\u7684\u5916\u9375\u7d04\u675f\u662f\u4e00\u7a2e\u7528\u65bc\u7dad\u8b77\u6578\u64da\u5b8c\u6574\u6027\u7684\u6a5f\u5236\u3002\u7576\u4e00\u500b\u8868\uff08\u5b50\u8868\uff09\u4e2d\u7684\u67d0\u500b\u5b57\u6bb5\u5f15\u7528\u53e6\u4e00\u500b\u8868\uff08\u7236\u8868\uff09\u4e2d\u7684\u5b57\u6bb5\u6642\uff0c\u9019\u7a2e\u95dc\u4fc2\u5c31\u5f62\u6210\u4e86\u5916\u9375\u7d04\u675f\u3002\u7576\u4f60\u5617\u8a66\u522a\u9664\u6216\u66f4\u65b0\u7236\u8868\u4e2d\u7684\u884c\u6642\uff0c\u5982\u679c\u8a72\u884c\u5728\u5b50\u8868\u4e2d\u4ecd\u7136\u88ab\u5f15\u7528\uff0c\u5c31\u6703\u51fa\u73fe\u932f\u8aa41217\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u5047\u8a2d\u6709\u5169\u500b\u8868\uff1a<code>orders<\/code>\uff08\u8a02\u55ae\u8868\uff09\u548c<code>customers<\/code>\uff08\u5ba2\u6236\u8868\uff09\u3002\u5982\u679c<code>orders<\/code>\u8868\u4e2d\u7684\u67d0\u500b\u8a02\u55ae\u5f15\u7528\u4e86<code>customers<\/code>\u8868\u4e2d\u7684\u5ba2\u6236ID\uff0c\u90a3\u9ebc\u5728\u522a\u9664\u8a72\u5ba2\u6236\u4e4b\u524d\uff0c\u5fc5\u9808\u5148\u522a\u9664\u6240\u6709\u5f15\u7528\u8a72\u5ba2\u6236\u7684\u8a02\u55ae\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9%e9%8c%af%e8%aa%a41217-hkmNJUhXcc\">\u5982\u4f55\u4fee\u5fa9\u932f\u8aa41217<\/h2>\n<h3 id=\"1-%e7%a2%ba%e8%aa%8d%e5%a4%96%e9%8d%b5%e7%b4%84%e6%9d%9f-hkmNJUhXcc\">1. \u78ba\u8a8d\u5916\u9375\u7d04\u675f<\/h3>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u78ba\u8a8d\u54ea\u4e9b\u5916\u9375\u7d04\u675f\u5c0e\u81f4\u4e86\u9019\u4e00\u932f\u8aa4\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u67e5\u8a62\u4f86\u6aa2\u67e5\u5916\u9375\u7d04\u675f\uff1a<\/p>\n<pre><code>SELECT \n    TABLE_NAME, \n    COLUMN_NAME, \n    CONSTRAINT_NAME, \n    REFERENCED_TABLE_NAME, \n    REFERENCED_COLUMN_NAME \nFROM \n    information_schema.KEY_COLUMN_USAGE \nWHERE \n    REFERENCED_TABLE_NAME = 'customers';<\/code><\/pre>\n<p>\u9019\u5c07\u5217\u51fa\u6240\u6709\u5f15\u7528<code>customers<\/code>\u8868\u7684\u5916\u9375\u7d04\u675f\u3002<\/p>\n<h3 id=\"2-%e5%88%aa%e9%99%a4%e6%88%96%e6%9b%b4%e6%96%b0%e5%ad%90%e8%a1%a8%e4%b8%ad%e7%9a%84%e7%9b%b8%e9%97%9c%e8%a1%8c-hkmNJUhXcc\">2. \u522a\u9664\u6216\u66f4\u65b0\u5b50\u8868\u4e2d\u7684\u76f8\u95dc\u884c<\/h3>\n<p>\u5728\u522a\u9664\u7236\u8868\u4e2d\u7684\u884c\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u5148\u522a\u9664\u6216\u66f4\u65b0\u5b50\u8868\u4e2d\u6240\u6709\u5f15\u7528\u8a72\u884c\u7684\u8a18\u9304\u3002\u4f8b\u5982\uff0c\u5982\u679c\u8981\u522a\u9664\u5ba2\u6236ID\u70ba1\u7684\u5ba2\u6236\uff0c\u60a8\u9700\u8981\u5148\u522a\u9664\u6240\u6709\u8207\u8a72\u5ba2\u6236\u76f8\u95dc\u7684\u8a02\u55ae\uff1a<\/p>\n<pre><code>DELETE FROM orders WHERE customer_id = 1;<\/code><\/pre>\n<p>\u5728\u522a\u9664\u6240\u6709\u76f8\u95dc\u884c\u5f8c\uff0c\u60a8\u5c31\u53ef\u4ee5\u5b89\u5168\u5730\u522a\u9664\u5ba2\u6236\uff1a<\/p>\n<pre><code>DELETE FROM customers WHERE id = 1;<\/code><\/pre>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8on-delete-cascade%e9%81%b8%e9%a0%85-hkmNJUhXcc\">3. \u4f7f\u7528ON DELETE CASCADE\u9078\u9805<\/h3>\n<p>\u5982\u679c\u60a8\u5e0c\u671b\u5728\u522a\u9664\u7236\u8868\u4e2d\u7684\u884c\u6642\u81ea\u52d5\u522a\u9664\u5b50\u8868\u4e2d\u7684\u76f8\u95dc\u884c\uff0c\u53ef\u4ee5\u5728\u5275\u5efa\u5916\u9375\u7d04\u675f\u6642\u4f7f\u7528<code>ON DELETE CASCADE<\/code>\u9078\u9805\u3002\u9019\u6a23\uff0c\u7576\u7236\u884c\u88ab\u522a\u9664\u6642\uff0c\u6240\u6709\u5f15\u7528\u8a72\u884c\u7684\u5b50\u884c\u4e5f\u6703\u81ea\u52d5\u88ab\u522a\u9664\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>ALTER TABLE orders \nADD CONSTRAINT fk_customer \nFOREIGN KEY (customer_id) \nREFERENCES customers(id) \nON DELETE CASCADE;<\/code><\/pre>\n<p>\u9019\u6a23\u8a2d\u7f6e\u5f8c\uff0c\u7576\u60a8\u522a\u9664\u4e00\u500b\u5ba2\u6236\u6642\uff0c\u6240\u6709\u8207\u8a72\u5ba2\u6236\u76f8\u95dc\u7684\u8a02\u55ae\u5c07\u81ea\u52d5\u88ab\u522a\u9664\uff0c\u5f9e\u800c\u907f\u514d\u4e86\u5916\u9375\u7d04\u675f\u932f\u8aa4\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-hkmNJUhXcc\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u932f\u8aa41217\uff08SQLSTATE: 23000\uff09\u901a\u5e38\u662f\u7531\u65bc\u5916\u9375\u7d04\u675f\u5c0e\u81f4\u7684\uff0c\u9019\u610f\u5473\u8457\u5728\u522a\u9664\u6216\u66f4\u65b0\u7236\u884c\u6642\uff0c\u5b50\u8868\u4e2d\u4ecd\u7136\u5b58\u5728\u5c0d\u8a72\u884c\u7684\u5f15\u7528\u3002\u901a\u904e\u78ba\u8a8d\u5916\u9375\u7d04\u675f\u3001\u522a\u9664\u6216\u66f4\u65b0\u5b50\u8868\u4e2d\u7684\u76f8\u95dc\u884c\uff0c\u6216\u4f7f\u7528<code>ON DELETE CASCADE<\/code>\u9078\u9805\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u6b64\u554f\u984c\u3002\u4e86\u89e3\u9019\u4e9b\u6982\u5ff5\u4e0d\u50c5\u6709\u52a9\u65bc\u7dad\u8b77\u6578\u64da\u5b8c\u6574\u6027\uff0c\u9084\u80fd\u63d0\u9ad8\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u6548\u7387\u3002<\/p>\n<p>\u5982\u679c\u60a8\u9700\u8981\u66f4\u591a\u6709\u95dc<code>VPS<\/code>\u3001<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216\u5176\u4ed6\u6578\u64da\u5eab\u7ba1\u7406\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u6e90\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41217\uff08ER_ROW_IS_REFERENCED\uff09\uff0c\u89e3\u6c7a\u5916\u9375\u7d04\u675f\u5931\u6557\u554f\u984c\uff0c\u9806\u5229\u522a\u9664\u6216\u66f4\u65b0\u7236\u884c\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-177873","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177873","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=177873"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177873\/revisions"}],"predecessor-version":[{"id":177874,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177873\/revisions\/177874"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=177873"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=177873"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=177873"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}