{"id":177421,"date":"2024-11-08T14:30:18","date_gmt":"2024-11-08T06:30:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/177421\/"},"modified":"2024-11-08T14:30:18","modified_gmt":"2024-11-08T06:30:18","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41110-sql%e7%8b%80%e6%85%8b%ef%bc%9a42000%ef%bc%88er_field_specified_twice%ef%bc%89%e5%88%97%ef%bc%85s%e6%8c%87%e5%ae%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/177421\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41110 &#8211; SQL\u72c0\u614b\uff1a42000\uff08ER_FIELD_SPECIFIED_TWICE\uff09\u5217\u201c\uff05s\u201d\u6307\u5b9a\u5169\u6b21"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41110-sql%e7%8b%80%e6%85%8b%ef%bc%9a42000%ef%bc%88er_field_specified_twice%ef%bc%89%e5%88%97%ef%bc%85s%e6%8c%87%e5%ae%9a-aweFoxfaza\">\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41110 &#8211; SQL\u72c0\u614b\uff1a42000\uff08ER_FIELD_SPECIFIED_TWICE\uff09\u5217\u201c\uff05s\u201d\u6307\u5b9a\u5169\u6b21<\/h1>\n<p>\u5728\u4f7f\u7528MySQL\u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u932f\u8aa41110\uff0c\u8a72\u932f\u8aa4\u7684SQL\u72c0\u614b\u70ba42000\uff0c\u63d0\u793a\u201c\u5217\u2018%s\u2019\u6307\u5b9a\u5169\u6b21\u201d\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u767c\u751f\u5728\u57f7\u884cSQL\u67e5\u8a62\u6642\uff0c\u7279\u5225\u662f\u5728\u63d2\u5165\u6216\u66f4\u65b0\u6578\u64da\u6642\uff0c\u7576\u540c\u4e00\u5217\u88ab\u91cd\u8907\u6307\u5b9a\u6642\uff0cMySQL\u6703\u5831\u544a\u6b64\u932f\u8aa4\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e5%8e%9f%e5%9b%a0-aweFoxfaza\">\u932f\u8aa4\u539f\u56e0<\/h2>\n<p>\u932f\u8aa41110\u7684\u4e3b\u8981\u539f\u56e0\u662fSQL\u8a9e\u53e5\u4e2d\u5c0d\u540c\u4e00\u5217\u7684\u91cd\u8907\u5f15\u7528\u3002\u9019\u53ef\u80fd\u767c\u751f\u5728\u4ee5\u4e0b\u5e7e\u7a2e\u60c5\u6cc1\u4e2d\uff1a<\/p>\n<ul>\n<li><strong>INSERT\u8a9e\u53e5\uff1a<\/strong>\u7576\u5728INSERT\u8a9e\u53e5\u4e2d\u91cd\u8907\u6307\u5b9a\u540c\u4e00\u5217\u6642\uff0c\u4f8b\u5982\uff1a<\/li>\n<\/ul>\n<pre><code>INSERT INTO users (username, email, username) VALUES ('user1', 'user1@example.com', 'user1');\n<\/code><\/pre>\n<ul>\n<li><strong>UPDATE\u8a9e\u53e5\uff1a<\/strong>\u5728UPDATE\u8a9e\u53e5\u4e2d\uff0c\u5982\u679c\u5c0d\u540c\u4e00\u5217\u9032\u884c\u591a\u6b21\u8ce6\u503c\uff0c\u4e5f\u6703\u5c0e\u81f4\u6b64\u932f\u8aa4\uff0c\u4f8b\u5982\uff1a<\/li>\n<\/ul>\n<pre><code>UPDATE users SET username = 'user1', email = 'user1@example.com', username = 'user2' WHERE id = 1;\n<\/code><\/pre>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9%e9%8c%af%e8%aa%a41110-aweFoxfaza\">\u5982\u4f55\u4fee\u5fa9\u932f\u8aa41110<\/h2>\n<p>\u8981\u4fee\u5fa9\u6b64\u932f\u8aa4\uff0c\u958b\u767c\u8005\u9700\u8981\u6aa2\u67e5SQL\u8a9e\u53e5\uff0c\u78ba\u4fdd\u6bcf\u4e00\u5217\u53ea\u88ab\u6307\u5b9a\u4e00\u6b21\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5177\u9ad4\u7684\u4fee\u5fa9\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5insert%e8%aa%9e%e5%8f%a5-aweFoxfaza\">1. \u6aa2\u67e5INSERT\u8a9e\u53e5<\/h3>\n<p>\u5728INSERT\u8a9e\u53e5\u4e2d\uff0c\u78ba\u4fdd\u6bcf\u4e00\u5217\u7684\u540d\u7a31\u90fd\u662f\u552f\u4e00\u7684\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>INSERT INTO users (username, email) VALUES ('user1', 'user1@example.com');\n<\/code><\/pre>\n<h3 id=\"2-%e6%aa%a2%e6%9f%a5update%e8%aa%9e%e5%8f%a5-aweFoxfaza\">2. \u6aa2\u67e5UPDATE\u8a9e\u53e5<\/h3>\n<p>\u5728UPDATE\u8a9e\u53e5\u4e2d\uff0c\u78ba\u4fdd\u6bcf\u4e00\u5217\u7684\u8ce6\u503c\u53ea\u51fa\u73fe\u4e00\u6b21\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>UPDATE users SET username = 'user1', email = 'user1@example.com' WHERE id = 1;\n<\/code><\/pre>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8sql%e8%aa%9e%e6%b3%95%e6%aa%a2%e6%9f%a5%e5%b7%a5%e5%85%b7-aweFoxfaza\">3. \u4f7f\u7528SQL\u8a9e\u6cd5\u6aa2\u67e5\u5de5\u5177<\/h3>\n<p>\u8a31\u591a\u6578\u64da\u5eab\u7ba1\u7406\u5de5\u5177\uff08\u5982phpMyAdmin\u6216MySQL Workbench\uff09\u63d0\u4f9b\u4e86SQL\u8a9e\u6cd5\u6aa2\u67e5\u529f\u80fd\uff0c\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u5728\u57f7\u884c\u67e5\u8a62\u4e4b\u524d\u6aa2\u67e5\u8a9e\u6cd5\u932f\u8aa4\u3002<\/p>\n<h2 id=\"%e7%a4%ba%e4%be%8b-aweFoxfaza\">\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u5b8c\u6574\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u6b63\u78ba\u4f7f\u7528INSERT\u548cUPDATE\u8a9e\u53e5\uff1a<\/p>\n<pre><code>-- \u6b63\u78ba\u7684INSERT\u8a9e\u53e5\nINSERT INTO users (username, email) VALUES ('user1', 'user1@example.com');\n\n-- \u6b63\u78ba\u7684UPDATE\u8a9e\u53e5\nUPDATE users SET email = 'user1_updated@example.com' WHERE username = 'user1';\n<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-aweFoxfaza\">\u7d50\u8ad6<\/h2>\n<p>MySQL\u932f\u8aa41110\uff08ER_FIELD_SPECIFIED_TWICE\uff09\u901a\u5e38\u662f\u7531\u65bcSQL\u8a9e\u53e5\u4e2d\u5c0d\u540c\u4e00\u5217\u7684\u91cd\u8907\u5f15\u7528\u5f15\u8d77\u7684\u3002\u901a\u904e\u4ed4\u7d30\u6aa2\u67e5SQL\u8a9e\u53e5\uff0c\u78ba\u4fdd\u6bcf\u4e00\u5217\u53ea\u88ab\u6307\u5b9a\u4e00\u6b21\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u4fee\u5fa9\u6b64\u932f\u8aa4\u3002\u9019\u4e0d\u50c5\u80fd\u63d0\u9ad8\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u6548\u7387\uff0c\u9084\u80fd\u6e1b\u5c11\u56e0\u8a9e\u6cd5\u932f\u8aa4\u800c\u5c0e\u81f4\u7684\u554f\u984c\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a 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