{"id":177143,"date":"2024-11-08T13:42:17","date_gmt":"2024-11-08T05:42:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/177143\/"},"modified":"2024-11-08T13:42:19","modified_gmt":"2024-11-08T05:42:19","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41061-sql%e7%8b%80%e6%85%8b%ef%bc%9a42000%ef%bc%88er_dup_keyname%ef%bc%89%e9%87%8d%e8%a4%87%e7%9a%84%e9%8d%b5%e5%90%8d%ef%bc%85s","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/177143\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41061 &#8211; SQL\u72c0\u614b\uff1a42000\uff08ER_DUP_KEYNAME\uff09\u91cd\u8907\u7684\u9375\u540d\u201c\uff05s\u201d"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41061-sql%e7%8b%80%e6%85%8b%ef%bc%9a42000%ef%bc%88er_dup_keyname%ef%bc%89%e9%87%8d%e8%a4%87%e7%9a%84%e9%8d%b5%e5%90%8d%ef%bc%85s-kDfydrmDoL\">\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41061 &#8211; SQL\u72c0\u614b\uff1a42000\uff08ER_DUP_KEYNAME\uff09\u91cd\u8907\u7684\u9375\u540d\u201c\uff05s\u201d<\/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\u8aa41061\uff0c\u8a72\u932f\u8aa4\u7684SQL\u72c0\u614b\u70ba42000\uff0c\u8868\u793a\u51fa\u73fe\u4e86\u91cd\u8907\u7684\u9375\u540d\u201c\uff05s\u201d\u3002\u9019\u500b\u554f\u984c\u901a\u5e38\u767c\u751f\u5728\u5275\u5efa\u6216\u4fee\u6539\u8868\u7d50\u69cb\u6642\uff0c\u5c24\u5176\u662f\u5728\u6dfb\u52a0\u7d22\u5f15\u6216\u4e3b\u9375\u6642\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u8a72\u932f\u8aa4\u7684\u6210\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a41061%e7%9a%84%e6%88%90%e5%9b%a0-kDfydrmDoL\">\u932f\u8aa41061\u7684\u6210\u56e0<\/h2>\n<p>\u932f\u8aa41061\u7684\u4e3b\u8981\u539f\u56e0\u662f\u8a66\u5716\u5728\u6578\u64da\u5eab\u4e2d\u5275\u5efa\u4e00\u500b\u5df2\u7d93\u5b58\u5728\u7684\u9375\u540d\u3002\u9019\u53ef\u80fd\u662f\u7531\u65bc\u4ee5\u4e0b\u5e7e\u500b\u539f\u56e0\uff1a<\/p>\n<ul>\n<li><strong>\u91cd\u8907\u7684\u7d22\u5f15\u540d\u7a31\uff1a<\/strong>\u7576\u4f60\u5617\u8a66\u70ba\u4e00\u500b\u8868\u6dfb\u52a0\u4e00\u500b\u7d22\u5f15\uff0c\u800c\u8a72\u7d22\u5f15\u7684\u540d\u7a31\u5df2\u7d93\u5b58\u5728\u65bc\u8a72\u8868\u4e2d\u6642\uff0c\u5c31\u6703\u51fa\u73fe\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u91cd\u8907\u7684\u4e3b\u9375\u540d\u7a31\uff1a<\/strong>\u5982\u679c\u4f60\u5728\u5275\u5efa\u8868\u6642\u6307\u5b9a\u4e86\u4e00\u500b\u4e3b\u9375\uff0c\u800c\u8a72\u4e3b\u9375\u7684\u540d\u7a31\u8207\u5df2\u5b58\u5728\u7684\u4e3b\u9375\u540d\u7a31\u76f8\u540c\uff0c\u4e5f\u6703\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u6578\u64da\u5eab\u9077\u79fb\u6216\u5c0e\u5165\u554f\u984c\uff1a<\/strong>\u5728\u5f9e\u5176\u4ed6\u6578\u64da\u5eab\u5c0e\u5165\u6578\u64da\u6642\uff0c\u53ef\u80fd\u6703\u56e0\u70ba\u91cd\u8907\u7684\u9375\u540d\u800c\u5f15\u767c\u6b64\u932f\u8aa4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9%e9%8c%af%e8%aa%a41061-kDfydrmDoL\">\u5982\u4f55\u4fee\u5fa9\u932f\u8aa41061<\/h2>\n<p>\u4fee\u5fa9MySQL\u932f\u8aa41061\u7684\u65b9\u6cd5\u4e3b\u8981\u6709\u4ee5\u4e0b\u5e7e\u7a2e\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e7%8f%be%e6%9c%89%e7%9a%84%e7%b4%a2%e5%bc%95%e5%92%8c%e4%b8%bb%e9%8d%b5-kDfydrmDoL\">1. \u6aa2\u67e5\u73fe\u6709\u7684\u7d22\u5f15\u548c\u4e3b\u9375<\/h3>\n<p>\u5728\u5617\u8a66\u5275\u5efa\u65b0\u7684\u7d22\u5f15\u6216\u4e3b\u9375\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u6aa2\u67e5\u8a72\u8868\u4e2d\u5df2\u5b58\u5728\u7684\u7d22\u5f15\u548c\u4e3b\u9375\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\u4f86\u67e5\u770b\u8868\u7684\u7d22\u5f15\uff1a<\/p>\n<pre><code>SHOW INDEX FROM your_table_name;<\/code><\/pre>\n<p>\u9019\u5c07\u5217\u51fa\u6240\u6709\u73fe\u6709\u7684\u7d22\u5f15\u53ca\u5176\u540d\u7a31\u3002\u78ba\u4fdd\u4f60\u8981\u5275\u5efa\u7684\u7d22\u5f15\u540d\u7a31\u4e0d\u8207\u73fe\u6709\u7684\u7d22\u5f15\u540d\u7a31\u91cd\u8907\u3002<\/p>\n<h3 id=\"2-%e4%bf%ae%e6%94%b9%e7%b4%a2%e5%bc%95%e5%90%8d%e7%a8%b1-kDfydrmDoL\">2. \u4fee\u6539\u7d22\u5f15\u540d\u7a31<\/h3>\n<p>\u5982\u679c\u767c\u73fe\u8981\u5275\u5efa\u7684\u7d22\u5f15\u540d\u7a31\u5df2\u7d93\u5b58\u5728\uff0c\u53ef\u4ee5\u9078\u64c7\u4fee\u6539\u7d22\u5f15\u540d\u7a31\u3002\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\u4f86\u5275\u5efa\u4e00\u500b\u65b0\u7684\u7d22\u5f15\uff1a<\/p>\n<pre><code>CREATE INDEX new_index_name ON your_table_name (column_name);<\/code><\/pre>\n<p>\u78ba\u4fdd\u65b0\u7684\u7d22\u5f15\u540d\u7a31\u662f\u552f\u4e00\u7684\uff0c\u9019\u6a23\u5c31\u4e0d\u6703\u518d\u51fa\u73fe\u932f\u8aa41061\u3002<\/p>\n<h3 id=\"3-%e5%88%aa%e9%99%a4%e9%87%8d%e8%a4%87%e7%9a%84%e7%b4%a2%e5%bc%95-kDfydrmDoL\">3. \u522a\u9664\u91cd\u8907\u7684\u7d22\u5f15<\/h3>\n<p>\u5982\u679c\u4e0d\u518d\u9700\u8981\u91cd\u8907\u7684\u7d22\u5f15\uff0c\u53ef\u4ee5\u9078\u64c7\u522a\u9664\u5b83\u3002\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\u4f86\u522a\u9664\u7d22\u5f15\uff1a<\/p>\n<pre><code>DROP INDEX existing_index_name ON your_table_name;<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u6e05\u9664\u91cd\u8907\u7684\u7d22\u5f15\uff0c\u7136\u5f8c\u518d\u5617\u8a66\u5275\u5efa\u65b0\u7684\u7d22\u5f15\u3002<\/p>\n<h3 id=\"4-%e6%aa%a2%e6%9f%a5%e6%95%b8%e6%93%9a%e5%ba%ab%e9%81%b7%e7%a7%bb%e8%85%b3%e6%9c%ac-kDfydrmDoL\">4. \u6aa2\u67e5\u6578\u64da\u5eab\u9077\u79fb\u8173\u672c<\/h3>\n<p>\u5982\u679c\u932f\u8aa4\u767c\u751f\u5728\u6578\u64da\u5eab\u9077\u79fb\u6216\u5c0e\u5165\u904e\u7a0b\u4e2d\uff0c\u8acb\u6aa2\u67e5\u9077\u79fb\u8173\u672c\uff0c\u78ba\u4fdd\u4e0d\u6703\u91cd\u8907\u5275\u5efa\u5df2\u5b58\u5728\u7684\u7d22\u5f15\u6216\u4e3b\u9375\u3002\u53ef\u4ee5\u901a\u904e\u4fee\u6539\u8173\u672c\u4f86\u907f\u514d\u91cd\u8907\u5275\u5efa\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-kDfydrmDoL\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u932f\u8aa41061\uff08ER_DUP_KEYNAME\uff09\u901a\u5e38\u662f\u7531\u65bc\u91cd\u8907\u7684\u9375\u540d\u5f15\u8d77\u7684\uff0c\u9019\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\u662f\u4e00\u500b\u5e38\u898b\u7684\u554f\u984c\u3002\u901a\u904e\u6aa2\u67e5\u73fe\u6709\u7684\u7d22\u5f15\u548c\u4e3b\u9375\u3001\u4fee\u6539\u7d22\u5f15\u540d\u7a31\u3001\u522a\u9664\u91cd\u8907\u7684\u7d22\u5f15\u4ee5\u53ca\u4ed4\u7d30\u6aa2\u67e5\u6578\u64da\u5eab\u9077\u79fb\u8173\u672c\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u6b64\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>\u4fee\u5fa9MySQL\u932f\u8aa41061\uff08ER_DUP_KEYNAME\uff09\u7684\u65b9\u6cd5\uff0c\u89e3\u6c7a\u91cd\u8907\u9375\u540d\u554f\u984c\uff0c\u78ba\u4fdd\u6578\u64da\u5eab\u64cd\u4f5c\u9806\u5229\u9032\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-177143","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177143","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=177143"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177143\/revisions"}],"predecessor-version":[{"id":177144,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177143\/revisions\/177144"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=177143"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=177143"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=177143"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}