{"id":177979,"date":"2024-11-08T17:10:19","date_gmt":"2024-11-08T09:10:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/177979\/"},"modified":"2024-11-08T17:10:20","modified_gmt":"2024-11-08T09:10:20","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41271-sqlstate-hy000-er_cant_aggregate_ncollations-%e5%b0%8d%e6%93%8d%e4%bd%9cs%e4%bd%bf%e7%94%a8%e4%ba%86%e4%b8%8d%e5%90%8c%e6%a0%a1","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/177979\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41271 &#8211; SQLSTATE: HY000 (ER_CANT_AGGREGATE_NCOLLATIONS) \u5c0d\u64cd\u4f5c&#8217;%s&#8217;\u4f7f\u7528\u4e86\u4e0d\u540c\u6821\u5c0d\u7684\u4e0d\u5408\u6cd5\u7d44\u5408"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41271-sqlstate-hy000-er_cant_aggregate_ncollations-bADjaibyKL\">\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41271 &#8211; SQLSTATE: HY000 (ER_CANT_AGGREGATE_NCOLLATIONS)<\/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\u8aa4\u4ee3\u78bc1271\uff0c\u5177\u9ad4\u4fe1\u606f\u70ba\u201cSQLSTATE: HY000 (ER_CANT_AGGREGATE_NCOLLATIONS) \u5c0d\u64cd\u4f5c&#8217;%s&#8217;\u4f7f\u7528\u4e86\u4e0d\u540c\u6821\u5c0d\u7684\u4e0d\u5408\u6cd5\u7d44\u5408\u201d\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u767c\u751f\u5728\u9032\u884c\u805a\u5408\u64cd\u4f5c\u6642\uff0c\u6d89\u53ca\u5230\u4e0d\u540c\u7684\u5b57\u7b26\u96c6\u6216\u6821\u5c0d\u898f\u5247\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u500b\u932f\u8aa4\u7684\u6210\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-bADjaibyKL\">\u932f\u8aa4\u539f\u56e0\u5206\u6790<\/h2>\n<p>MySQL\u4e2d\u7684\u6821\u5c0d\uff08collation\uff09\u662f\u7528\u4f86\u5b9a\u7fa9\u5b57\u7b26\u4e32\u6bd4\u8f03\u7684\u898f\u5247\u3002\u7576\u4f60\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528\u4e86\u591a\u500b\u4e0d\u540c\u7684\u5b57\u7b26\u96c6\u6216\u6821\u5c0d\u6642\uff0cMySQL\u6703\u7121\u6cd5\u78ba\u5b9a\u5982\u4f55\u6b63\u78ba\u5730\u9032\u884c\u6bd4\u8f03\uff0c\u5f9e\u800c\u5c0e\u81f4\u932f\u8aa41271\u7684\u51fa\u73fe\u3002\u9019\u7a2e\u60c5\u6cc1\u901a\u5e38\u767c\u751f\u5728\u4ee5\u4e0b\u5e7e\u7a2e\u60c5\u6cc1\u4e0b\uff1a<\/p>\n<ul>\n<li><strong>\u591a\u500b\u8868\u7684\u6821\u5c0d\u4e0d\u4e00\u81f4\uff1a<\/strong>\u7576\u4f60\u5728JOIN\u64cd\u4f5c\u4e2d\u4f7f\u7528\u4e86\u4e0d\u540c\u6821\u5c0d\u7684\u8868\u6642\uff0cMySQL\u6703\u5831\u932f\u3002<\/li>\n<li><strong>\u805a\u5408\u51fd\u6578\u7684\u4f7f\u7528\uff1a<\/strong>\u5728\u4f7f\u7528\u5982SUM\u3001COUNT\u7b49\u805a\u5408\u51fd\u6578\u6642\uff0c\u5982\u679c\u6d89\u53ca\u7684\u5b57\u6bb5\u6709\u4e0d\u540c\u7684\u6821\u5c0d\uff0c\u5247\u6703\u5f15\u767c\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u5b57\u7b26\u4e32\u6bd4\u8f03\uff1a<\/strong>\u5728WHERE\u5b50\u53e5\u4e2d\u9032\u884c\u5b57\u7b26\u4e32\u6bd4\u8f03\u6642\uff0c\u5982\u679c\u6bd4\u8f03\u7684\u5b57\u7b26\u4e32\u6709\u4e0d\u540c\u7684\u6821\u5c0d\uff0c\u4e5f\u6703\u5c0e\u81f4\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%a41271-bADjaibyKL\">\u5982\u4f55\u4fee\u5fa9\u932f\u8aa41271<\/h2>\n<p>\u4fee\u5fa9\u6b64\u932f\u8aa4\u7684\u95dc\u9375\u5728\u65bc\u78ba\u4fdd\u6240\u6709\u6d89\u53ca\u7684\u5b57\u6bb5\u548c\u8868\u4f7f\u7528\u76f8\u540c\u7684\u5b57\u7b26\u96c6\u548c\u6821\u5c0d\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5177\u9ad4\u7684\u89e3\u6c7a\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e6%95%b8%e6%93%9a%e5%ba%ab%e5%92%8c%e8%a1%a8%e7%9a%84%e6%a0%a1%e5%b0%8d-bADjaibyKL\">1. \u6aa2\u67e5\u6578\u64da\u5eab\u548c\u8868\u7684\u6821\u5c0d<\/h3>\n<p>\u9996\u5148\uff0c\u4f60\u9700\u8981\u6aa2\u67e5\u6578\u64da\u5eab\u548c\u8868\u7684\u6821\u5c0d\u8a2d\u7f6e\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\u4f86\u67e5\u770b\u7576\u524d\u7684\u6821\u5c0d\uff1a<\/p>\n<pre><code>SHOW VARIABLES LIKE 'collation_%';<\/code><\/pre>\n<p>\u9019\u5c07\u986f\u793a\u7576\u524d\u6578\u64da\u5eab\u7684\u9ed8\u8a8d\u6821\u5c0d\u3002\u5982\u679c\u9700\u8981\u67e5\u770b\u7279\u5b9a\u8868\u7684\u6821\u5c0d\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre><code>SHOW TABLE STATUS LIKE 'your_table_name';<\/code><\/pre>\n<h3 id=\"2-%e4%bf%ae%e6%94%b9%e8%a1%a8%e7%9a%84%e6%a0%a1%e5%b0%8d-bADjaibyKL\">2. \u4fee\u6539\u8868\u7684\u6821\u5c0d<\/h3>\n<p>\u5982\u679c\u767c\u73fe\u8868\u7684\u6821\u5c0d\u8207\u5176\u4ed6\u8868\u4e0d\u4e00\u81f4\uff0c\u53ef\u4ee5\u4f7f\u7528ALTER TABLE\u8a9e\u53e5\u4f86\u4fee\u6539\u8868\u7684\u6821\u5c0d\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>ALTER TABLE your_table_name CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;<\/code><\/pre>\n<p>\u9019\u5c07\u628a\u8868\u7684\u5b57\u7b26\u96c6\u548c\u6821\u5c0d\u66f4\u6539\u70bautf8mb4\u548cutf8mb4_unicode_ci\uff0c\u9019\u662f\u4e00\u500b\u5e38\u7528\u7684\u9078\u64c7\u3002<\/p>\n<h3 id=\"3-%e5%9c%a8%e6%9f%a5%e8%a9%a2%e4%b8%ad%e6%8c%87%e5%ae%9a%e6%a0%a1%e5%b0%8d-bADjaibyKL\">3. \u5728\u67e5\u8a62\u4e2d\u6307\u5b9a\u6821\u5c0d<\/h3>\n<p>\u5982\u679c\u4e0d\u60f3\u66f4\u6539\u8868\u7684\u6821\u5c0d\uff0c\u53ef\u4ee5\u5728\u67e5\u8a62\u4e2d\u660e\u78ba\u6307\u5b9a\u6821\u5c0d\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT * FROM your_table_name WHERE your_column COLLATE utf8mb4_unicode_ci = 'some_value';<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u5728\u6bd4\u8f03\u6642\u4f7f\u7528\u76f8\u540c\u7684\u6821\u5c0d\u3002<\/p>\n<h3 id=\"4-%e4%bd%bf%e7%94%a8cast%e5%87%bd%e6%95%b8-bADjaibyKL\">4. \u4f7f\u7528CAST\u51fd\u6578<\/h3>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u53ef\u4ee5\u4f7f\u7528CAST\u51fd\u6578\u4f86\u5f37\u5236\u8f49\u63db\u5b57\u6bb5\u7684\u6821\u5c0d\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT COUNT(*) FROM your_table_name WHERE CAST(your_column AS CHAR CHARACTER SET utf8mb4) = 'some_value';<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-bADjaibyKL\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u932f\u8aa41271\u901a\u5e38\u662f\u7531\u65bc\u4e0d\u540c\u7684\u6821\u5c0d\u5c0e\u81f4\u7684\u805a\u5408\u64cd\u4f5c\u5931\u6557\u3002\u901a\u904e\u6aa2\u67e5\u548c\u7d71\u4e00\u6578\u64da\u5eab\u3001\u8868\u53ca\u5b57\u6bb5\u7684\u6821\u5c0d\u8a2d\u7f6e\uff0c\u6216\u8005\u5728\u67e5\u8a62\u4e2d\u660e\u78ba\u6307\u5b9a\u6821\u5c0d\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u4e00\u554f\u984c\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u904b\u884c\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u9078\u64c7\u5408\u9069\u7684\u5b57\u7b26\u96c6\u548c\u6821\u5c0d\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u7ba1\u7406\u6578\u64da\u5eab\u548c\u61c9\u7528\u7a0b\u5e8f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4fee\u5fa9MySQL\u932f\u8aa41271 (ER_CANT_AGGREGATE_NCOLLATIONS) \u7684\u65b9\u6cd5\uff0c\u89e3\u6c7a\u4e0d\u540c\u6821\u5c0d\u7684\u975e\u6cd5\u7d44\u5408\u554f\u984c\uff0c\u78ba\u4fdd\u67e5\u8a62\u6b63\u5e38\u57f7\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-177979","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177979","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=177979"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177979\/revisions"}],"predecessor-version":[{"id":177980,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177979\/revisions\/177980"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=177979"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=177979"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=177979"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}