{"id":66789,"date":"2024-10-14T20:38:16","date_gmt":"2024-10-14T12:38:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/66789\/"},"modified":"2024-10-14T20:38:17","modified_gmt":"2024-10-14T12:38:17","slug":"mysql-%e9%8c%af%e8%aa%a4%e8%99%9f%ef%bc%9a3822%ef%bc%9b%e7%ac%a6%e8%99%9f%ef%bc%9aer_check_constraint_dup_name%ef%bc%9bsqlstate%ef%bc%9ahy000-%e5%a0%b1%e9%8c%af-%e6%95%85%e9%9a%9c%e4%bf%ae%e5%be%a9","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/66789\/","title":{"rendered":"MySQL \u932f\u8aa4\u865f\uff1a3822\uff1b\u7b26\u865f\uff1aER_CHECK_CONSTRAINT_DUP_NAME\uff1bSQLSTATE\uff1aHY000 \u5831\u932f \u6545\u969c\u4fee\u5fa9 \u9060\u7a0b\u8655\u7406"},"content":{"rendered":"<h1 id=\"mysql-%e9%8c%af%e8%aa%a4%e8%99%9f%ef%bc%9a3822%ef%bc%9b%e7%ac%a6%e8%99%9f%ef%bc%9aer_check_constraint_dup_name%ef%bc%9bsqlstate%ef%bc%9ahy000-%e5%a0%b1%e9%8c%af-%e6%95%85%e9%9a%9c%e4%bf%ae%e5%be%a9-pNbZUgBtlt\">MySQL \u932f\u8aa4\u865f\uff1a3822\uff1b\u7b26\u865f\uff1aER_CHECK_CONSTRAINT_DUP_NAME\uff1bSQLSTATE\uff1aHY000 \u5831\u932f \u6545\u969c\u4fee\u5fa9 \u9060\u7a0b\u8655\u7406<\/h1>\n<p>\u5728\u4f7f\u7528 MySQL \u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\uff0c\u5176\u4e2d\u4e4b\u4e00\u4fbf\u662f\u932f\u8aa4\u865f 3822\uff0c\u7b26\u865f ER_CHECK_CONSTRAINT_DUP_NAME\uff0cSQLSTATE HY000\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u8207\u6578\u64da\u5eab\u4e2d\u7684\u7d04\u675f\u689d\u4ef6\u6709\u95dc\uff0c\u7279\u5225\u662f\u7576\u4f60\u5617\u8a66\u5275\u5efa\u6216\u4fee\u6539\u8868\u6642\uff0c\u53ef\u80fd\u6703\u56e0\u70ba\u91cd\u8907\u7684\u7d04\u675f\u540d\u7a31\u800c\u5c0e\u81f4\u6b64\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=\"%e9%8c%af%e8%aa%a4%e5%8e%9f%e5%9b%a0%e5%88%86%e6%9e%90-pNbZUgBtlt\">\u932f\u8aa4\u539f\u56e0\u5206\u6790<\/h2>\n<p>MySQL \u4e2d\u7684\u7d04\u675f\u689d\u4ef6\uff08Constraints\uff09\u662f\u7528\u4f86\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002\u7576\u4f60\u5728\u5275\u5efa\u8868\u6216\u4fee\u6539\u8868\u7d50\u69cb\u6642\uff0c\u53ef\u80fd\u6703\u5b9a\u7fa9\u4e00\u4e9b\u7d04\u675f\u689d\u4ef6\uff0c\u4f8b\u5982\u4e3b\u9375\u3001\u5916\u9375\u6216\u552f\u4e00\u7d04\u675f\u7b49\u3002\u5982\u679c\u4f60\u5728\u540c\u4e00\u500b\u6578\u64da\u5eab\u4e2d\u4f7f\u7528\u4e86\u76f8\u540c\u7684\u7d04\u675f\u540d\u7a31\uff0cMySQL \u5c07\u7121\u6cd5\u8b58\u5225\uff0c\u5f9e\u800c\u5f15\u767c\u932f\u8aa4 3822\u3002<\/p>\n<ul>\n<li><strong>\u91cd\u8907\u7684\u7d04\u675f\u540d\u7a31\uff1a<\/strong>\u7576\u4f60\u5617\u8a66\u5275\u5efa\u4e00\u500b\u65b0\u7684\u7d04\u675f\uff0c\u800c\u9019\u500b\u7d04\u675f\u7684\u540d\u7a31\u5df2\u7d93\u5b58\u5728\u65bc\u6578\u64da\u5eab\u4e2d\u6642\uff0c\u5c31\u6703\u51fa\u73fe\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u8868\u7d50\u69cb\u4fee\u6539\uff1a<\/strong>\u5728\u4fee\u6539\u8868\u7d50\u69cb\u6642\uff0c\u5982\u679c\u4e0d\u5c0f\u5fc3\u91cd\u8907\u4f7f\u7528\u4e86\u5df2\u5b58\u5728\u7684\u7d04\u675f\u540d\u7a31\uff0c\u4e5f\u6703\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u6578\u64da\u5eab\u9077\u79fb\uff1a<\/strong>\u5728\u9032\u884c\u6578\u64da\u5eab\u9077\u79fb\u6642\uff0c\u53ef\u80fd\u6703\u56e0\u70ba\u4e0d\u540c\u74b0\u5883\u4e2d\u7684\u7d04\u675f\u540d\u7a31\u4e0d\u4e00\u81f4\u800c\u5f15\u767c\u6b64\u932f\u8aa4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%95%85%e9%9a%9c%e4%bf%ae%e5%be%a9%e6%ad%a5%e9%a9%9f-pNbZUgBtlt\">\u6545\u969c\u4fee\u5fa9\u6b65\u9a5f<\/h2>\n<p>\u8981\u4fee\u5fa9 MySQL \u932f\u8aa4 3822\uff0c\u60a8\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u6b65\u9a5f\u9032\u884c\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e7%b4%84%e6%9d%9f%e5%90%8d%e7%a8%b1-pNbZUgBtlt\">1. \u6aa2\u67e5\u7d04\u675f\u540d\u7a31<\/h3>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u6aa2\u67e5\u6578\u64da\u5eab\u4e2d\u5df2\u5b58\u5728\u7684\u7d04\u675f\u540d\u7a31\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u67e5\u8a62\u4f86\u5217\u51fa\u6240\u6709\u7d04\u675f\uff1a<\/p>\n<pre><code>SELECT CONSTRAINT_NAME \nFROM information_schema.TABLE_CONSTRAINTS \nWHERE TABLE_SCHEMA = 'your_database_name';<\/code><\/pre>\n<h3 id=\"2-%e4%bf%ae%e6%94%b9%e7%b4%84%e6%9d%9f%e5%90%8d%e7%a8%b1-pNbZUgBtlt\">2. \u4fee\u6539\u7d04\u675f\u540d\u7a31<\/h3>\n<p>\u5982\u679c\u767c\u73fe\u6709\u91cd\u8907\u7684\u7d04\u675f\u540d\u7a31\uff0c\u60a8\u53ef\u4ee5\u9078\u64c7\u4fee\u6539\u65b0\u7d04\u675f\u7684\u540d\u7a31\u3002\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\u4f86\u4fee\u6539\u7d04\u675f\u540d\u7a31\uff1a<\/p>\n<pre><code>ALTER TABLE your_table_name \nADD CONSTRAINT new_constraint_name UNIQUE (column_name);<\/code><\/pre>\n<h3 id=\"3-%e5%88%aa%e9%99%a4%e9%87%8d%e8%a4%87%e7%9a%84%e7%b4%84%e6%9d%9f-pNbZUgBtlt\">3. \u522a\u9664\u91cd\u8907\u7684\u7d04\u675f<\/h3>\n<p>\u5982\u679c\u4e0d\u518d\u9700\u8981\u91cd\u8907\u7684\u7d04\u675f\uff0c\u53ef\u4ee5\u9078\u64c7\u522a\u9664\u5b83\u3002\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\u4f86\u522a\u9664\u7d04\u675f\uff1a<\/p>\n<pre><code>ALTER TABLE your_table_name \nDROP CONSTRAINT duplicate_constraint_name;<\/code><\/pre>\n<h3 id=\"4-%e6%b8%ac%e8%a9%a6%e4%bf%ae%e6%94%b9-pNbZUgBtlt\">4. \u6e2c\u8a66\u4fee\u6539<\/h3>\n<p>\u5728\u9032\u884c\u4e86\u4e0a\u8ff0\u4fee\u6539\u5f8c\uff0c\u8acb\u518d\u6b21\u57f7\u884c\u539f\u672c\u5c0e\u81f4\u932f\u8aa4\u7684 SQL \u8a9e\u53e5\uff0c\u4ee5\u78ba\u4fdd\u554f\u984c\u5df2\u7d93\u89e3\u6c7a\u3002<\/p>\n<h2 id=\"%e9%81%a0%e7%a8%8b%e8%99%95%e7%90%86%e5%bb%ba%e8%ad%b0-pNbZUgBtlt\">\u9060\u7a0b\u8655\u7406\u5efa\u8b70<\/h2>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u60a8\u53ef\u80fd\u9700\u8981\u9060\u7a0b\u8655\u7406 MySQL \u6578\u64da\u5eab\u7684\u932f\u8aa4\u3002\u9019\u6642\uff0c\u60a8\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u4ee5\u4e0b\u5de5\u5177\u548c\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li><strong>SSH \u9023\u63a5\uff1a<\/strong>\u901a\u904e SSH \u9023\u63a5\u5230\u60a8\u7684\u4f3a\u670d\u5668\uff0c\u4f7f\u7528\u547d\u4ee4\u884c\u5de5\u5177\u76f4\u63a5\u57f7\u884c SQL \u8a9e\u53e5\u3002<\/li>\n<li><strong>\u6578\u64da\u5eab\u7ba1\u7406\u5de5\u5177\uff1a<\/strong>\u4f7f\u7528\u5982 phpMyAdmin \u6216 MySQL Workbench \u7b49\u5716\u5f62\u5316\u5de5\u5177\u4f86\u7ba1\u7406\u6578\u64da\u5eab\uff0c\u9019\u4e9b\u5de5\u5177\u901a\u5e38\u63d0\u4f9b\u4e86\u66f4\u76f4\u89c0\u7684\u754c\u9762\u4f86\u6aa2\u67e5\u548c\u4fee\u6539\u7d04\u675f\u3002<\/li>\n<li><strong>\u65e5\u8a8c\u6a94\u6848\uff1a<\/strong>\u6aa2\u67e5 MySQL \u7684\u932f\u8aa4\u65e5\u8a8c\uff0c\u4ee5\u7372\u53d6\u66f4\u591a\u7684\u932f\u8aa4\u4fe1\u606f\u548c\u4e0a\u4e0b\u6587\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-pNbZUgBtlt\">\u7e3d\u7d50<\/h2>\n<p>MySQL \u932f\u8aa4\u865f 3822 \u662f\u4e00\u500b\u5e38\u898b\u7684\u554f\u984c\uff0c\u901a\u5e38\u7531\u65bc\u7d04\u675f\u540d\u7a31\u91cd\u8907\u5f15\u8d77\u3002\u901a\u904e\u6aa2\u67e5\u548c\u4fee\u6539\u7d04\u675f\u540d\u7a31\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u6b64\u554f\u984c\u3002\u5728\u9032\u884c\u6578\u64da\u5eab\u7ba1\u7406\u6642\uff0c\u4fdd\u6301\u826f\u597d\u7684\u547d\u540d\u898f\u7bc4\u548c\u7d50\u69cb\u8a2d\u8a08\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u82e5\u60a8\u9700\u8981\u9032\u4e00\u6b65\u7684\u652f\u6301\u6216\u670d\u52d9\uff0c\u8acb\u8003\u616e\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u4ee5\u78ba\u4fdd\u60a8\u7684\u6578\u64da\u5eab\u904b\u884c\u7a69\u5b9a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u89e3\u6c7a MySQL \u932f\u8aa4\u865f 3822 (ER_CHECK_CONSTRAINT_DUP_NAME) \u7684\u6545\u969c\uff0c\u63d0\u4f9b\u9060\u7a0b\u8655\u7406\u65b9\u6848\uff0c\u78ba\u4fdd\u6578\u64da\u5b8c\u6574\u6027\u8207\u7a69\u5b9a\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-66789","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66789","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=66789"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66789\/revisions"}],"predecessor-version":[{"id":66790,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66789\/revisions\/66790"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=66789"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=66789"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=66789"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}