{"id":177163,"date":"2024-11-08T13:52:16","date_gmt":"2024-11-08T05:52:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/177163\/"},"modified":"2024-11-08T13:52:16","modified_gmt":"2024-11-08T05:52:16","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41071-sql%e7%8b%80%e6%85%8b%ef%bc%9a42000%ef%bc%88er_too_long_key%ef%bc%89%e6%8c%87%e5%ae%9a%e7%9a%84%e9%8d%b5%e5%a4%aa%e9%95%b7%ef%bc%9b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/177163\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41071 &#8211; SQL\u72c0\u614b\uff1a42000\uff08ER_TOO_LONG_KEY\uff09\u6307\u5b9a\u7684\u9375\u592a\u9577\uff1b\u6700\u5927\u9375\u9577\u5ea6\u70ba%d\u500b\u5b57\u7bc0"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41071-sql%e7%8b%80%e6%85%8b%ef%bc%9a42000%ef%bc%88er_too_long_key%ef%bc%89%e6%8c%87%e5%ae%9a%e7%9a%84%e9%8d%b5%e5%a4%aa%e9%95%b7%ef%bc%9b-iiDSJgvZWj\">\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41071 &#8211; SQL\u72c0\u614b\uff1a42000\uff08ER_TOO_LONG_KEY\uff09\u6307\u5b9a\u7684\u9375\u592a\u9577\uff1b\u6700\u5927\u9375\u9577\u5ea6\u70ba%d\u500b\u5b57\u7bc0<\/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\u8aa41071\uff0c\u8a72\u932f\u8aa4\u7684SQL\u72c0\u614b\u70ba42000\uff0c\u63d0\u793a\u201c\u6307\u5b9a\u7684\u9375\u592a\u9577\uff1b\u6700\u5927\u9375\u9577\u5ea6\u70ba%d\u500b\u5b57\u7bc0\u201d\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u767c\u751f\u5728\u5275\u5efa\u7d22\u5f15\u6216\u4e3b\u9375\u6642\uff0c\u7576\u6240\u6307\u5b9a\u7684\u9375\u9577\u5ea6\u8d85\u904e\u4e86MySQL\u7684\u9650\u5236\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u8a72\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-iiDSJgvZWj\">\u932f\u8aa4\u539f\u56e0\u5206\u6790<\/h2>\n<p>MySQL\u5c0d\u65bc\u7d22\u5f15\u7684\u9577\u5ea6\u6709\u4e00\u5b9a\u7684\u9650\u5236\uff0c\u9019\u4e9b\u9650\u5236\u53d6\u6c7a\u65bc\u6240\u4f7f\u7528\u7684\u5b58\u5132\u5f15\u64ce\u548c\u5b57\u7b26\u96c6\u3002\u4f8b\u5982\uff0cInnoDB\u5b58\u5132\u5f15\u64ce\u5c0d\u65bc\u7d22\u5f15\u7684\u6700\u5927\u9577\u5ea6\u70ba767\u5b57\u7bc0\uff08\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528DYNAMIC\u6216COMPRESSED\u884c\u683c\u5f0f\u6642\u53ef\u9054\u52303072\u5b57\u7bc0\uff09\u3002\u5982\u679c\u60a8\u4f7f\u7528\u7684\u662fUTF-8\u5b57\u7b26\u96c6\uff0c\u5247\u6bcf\u500b\u5b57\u7b26\u53ef\u80fd\u4f54\u7528\u591a\u90544\u500b\u5b57\u7bc0\uff0c\u9019\u610f\u5473\u8457\u60a8\u6700\u591a\u53ea\u80fd\u7d22\u5f15191\u500b\u5b57\u7b26\u3002<\/p>\n<p>\u7576\u60a8\u5617\u8a66\u5275\u5efa\u4e00\u500b\u8d85\u904e\u9019\u500b\u9650\u5236\u7684\u7d22\u5f15\u6642\uff0c\u5c31\u6703\u51fa\u73fe\u932f\u8aa41071\u3002\u9019\u901a\u5e38\u767c\u751f\u5728\u4ee5\u4e0b\u60c5\u6cc1\uff1a<\/p>\n<ul>\n<li>\u5275\u5efa\u4e3b\u9375\u6216\u552f\u4e00\u7d22\u5f15\u6642\uff0c\u6307\u5b9a\u7684\u5217\u9577\u5ea6\u904e\u9577\u3002<\/li>\n<li>\u4f7f\u7528\u4e86\u4e0d\u5408\u9069\u7684\u5b57\u7b26\u96c6\uff0c\u5c0e\u81f4\u6bcf\u500b\u5b57\u7b26\u4f54\u7528\u7684\u5b57\u7bc0\u6578\u589e\u52a0\u3002<\/li>\n<li>\u5728\u8868\u4e2d\u4f7f\u7528\u4e86\u904e\u591a\u7684\u5217\u4f86\u5275\u5efa\u8907\u5408\u7d22\u5f15\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88-iiDSJgvZWj\">\u89e3\u6c7a\u65b9\u6848<\/h2>\n<p>\u8981\u4fee\u5fa9MySQL\u932f\u8aa41071\uff0c\u60a8\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u5e7e\u7a2e\u65b9\u6cd5\uff1a<\/p>\n<h3 id=\"1-%e7%b8%ae%e7%9f%ad%e7%b4%a2%e5%bc%95%e7%9a%84%e5%88%97%e9%95%b7%e5%ba%a6-iiDSJgvZWj\">1. \u7e2e\u77ed\u7d22\u5f15\u7684\u5217\u9577\u5ea6<\/h3>\n<p>\u5982\u679c\u60a8\u5728\u5275\u5efa\u7d22\u5f15\u6642\u6307\u5b9a\u4e86\u904e\u9577\u7684\u5217\uff0c\u53ef\u4ee5\u8003\u616e\u7e2e\u77ed\u8a72\u5217\u7684\u9577\u5ea6\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u6709\u4e00\u500bVARCHAR(255)\u7684\u5217\uff0c\u60a8\u53ef\u4ee5\u5c07\u5176\u6539\u70baVARCHAR(191)\uff0c\u4ee5\u7b26\u5408\u7d22\u5f15\u7684\u9577\u5ea6\u9650\u5236\u3002<\/p>\n<pre><code>ALTER TABLE your_table MODIFY your_column VARCHAR(191);\n<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e5%90%88%e9%81%a9%e7%9a%84%e5%ad%97%e7%ac%a6%e9%9b%86-iiDSJgvZWj\">2. \u4f7f\u7528\u5408\u9069\u7684\u5b57\u7b26\u96c6<\/h3>\n<p>\u5982\u679c\u60a8\u7684\u6578\u64da\u8868\u4f7f\u7528\u7684\u662fUTF-8\u5b57\u7b26\u96c6\uff0c\u8003\u616e\u5c07\u5176\u66f4\u6539\u70baUTF-8MB4\uff0c\u9019\u6a23\u53ef\u4ee5\u652f\u6301\u66f4\u591a\u5b57\u7b26\uff0c\u4f46\u8981\u6ce8\u610f\u9019\u53ef\u80fd\u6703\u5f71\u97ff\u7d22\u5f15\u7684\u9577\u5ea6\u3002\u60a8\u4e5f\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u5176\u4ed6\u5b57\u7b26\u96c6\uff0c\u5982latin1\uff0c\u9019\u6a23\u6bcf\u500b\u5b57\u7b26\u50c5\u4f54\u75281\u500b\u5b57\u7bc0\u3002<\/p>\n<pre><code>ALTER TABLE your_table CONVERT TO CHARACTER SET latin1;\n<\/code><\/pre>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e5%89%8d%e7%b6%b4%e7%b4%a2%e5%bc%95-iiDSJgvZWj\">3. \u4f7f\u7528\u524d\u7db4\u7d22\u5f15<\/h3>\n<p>\u5c0d\u65bc\u9577\u6587\u672c\u5b57\u6bb5\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u524d\u7db4\u7d22\u5f15\u4f86\u9650\u5236\u7d22\u5f15\u7684\u9577\u5ea6\u3002\u4f8b\u5982\uff0c\u5c0d\u65bcVARCHAR(255)\u7684\u5217\uff0c\u60a8\u53ef\u4ee5\u50c5\u7d22\u5f15\u524d100\u500b\u5b57\u7b26\u3002<\/p>\n<pre><code>CREATE INDEX idx_your_column ON your_table (your_column(100));\n<\/code><\/pre>\n<h3 id=\"4-%e6%aa%a2%e6%9f%a5%e8%a4%87%e5%90%88%e7%b4%a2%e5%bc%95%e7%9a%84%e5%88%97%e6%95%b8-iiDSJgvZWj\">4. \u6aa2\u67e5\u8907\u5408\u7d22\u5f15\u7684\u5217\u6578<\/h3>\n<p>\u5982\u679c\u60a8\u5728\u5275\u5efa\u8907\u5408\u7d22\u5f15\u6642\u4f7f\u7528\u4e86\u591a\u500b\u5217\uff0c\u8acb\u6aa2\u67e5\u9019\u4e9b\u5217\u7684\u7e3d\u9577\u5ea6\u662f\u5426\u8d85\u904e\u4e86\u9650\u5236\u3002\u60a8\u53ef\u4ee5\u8003\u616e\u6e1b\u5c11\u7d22\u5f15\u7684\u5217\u6578\u6216\u7e2e\u77ed\u67d0\u4e9b\u5217\u7684\u9577\u5ea6\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-iiDSJgvZWj\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u932f\u8aa41071\u901a\u5e38\u662f\u7531\u65bc\u7d22\u5f15\u9577\u5ea6\u8d85\u904e\u4e86MySQL\u7684\u9650\u5236\u6240\u5f15\u8d77\u7684\u3002\u901a\u904e\u7e2e\u77ed\u7d22\u5f15\u7684\u5217\u9577\u5ea6\u3001\u4f7f\u7528\u5408\u9069\u7684\u5b57\u7b26\u96c6\u3001\u4f7f\u7528\u524d\u7db4\u7d22\u5f15\u4ee5\u53ca\u6aa2\u67e5\u8907\u5408\u7d22\u5f15\u7684\u5217\u6578\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u500b\u554f\u984c\u3002\u4e86\u89e3\u9019\u4e9b\u89e3\u6c7a\u65b9\u6848\u4e0d\u50c5\u80fd\u5e6b\u52a9\u60a8\u4fee\u5fa9\u7576\u524d\u7684\u932f\u8aa4\uff0c\u9084\u80fd\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u9700\u8981\u7a69\u5b9a\u7684\u6578\u64da\u5eab\u74b0\u5883\uff0c\u8003\u616e\u4f7f\u7528\u6211\u5011\u7684<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u670d\u52d9\uff0c\u63d0\u4f9b\u9ad8\u6548\u80fd\u7684\u6578\u64da\u5eab\u652f\u6301\uff0c\u52a9\u60a8\u8f15\u9b06\u7ba1\u7406\u6578\u64da\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4fee\u5fa9MySQL\u932f\u8aa41071\u7684\u65b9\u6cd5\uff0c\u5305\u62ec\u8abf\u6574\u7d22\u5f15\u9577\u5ea6\u548c\u6578\u64da\u985e\u578b\uff0c\u4ee5\u89e3\u6c7a\u9375\u9577\u5ea6\u8d85\u904e\u6700\u5927\u9650\u5236\u7684\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-177163","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177163","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=177163"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177163\/revisions"}],"predecessor-version":[{"id":177164,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177163\/revisions\/177164"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=177163"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=177163"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=177163"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}