{"id":200251,"date":"2025-05-06T11:45:43","date_gmt":"2025-05-06T03:45:43","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200251\/"},"modified":"2025-05-06T11:45:43","modified_gmt":"2025-05-06T03:45:43","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8%e6%95%b0%e6%8d%ae%e5%ba%93%e4%b8%ad%e8%bd%bb%e6%9d%be%e8%af%86%e5%88%ab%e4%b8%ad%e6%96%87%e6%95%b0%e6%8d%ae%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200251\/","title":{"rendered":"\u5982\u4f55\u5728\u6570\u636e\u5e93\u4e2d\u8f7b\u677e\u8bc6\u522b\u4e2d\u6587\u6570\u636e\uff1f"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>\u5982\u4f55\u5728\u6570\u636e\u5e93\u4e2d\u8f7b\u677e\u8bc6\u522b\u4e2d\u6587\u6570\u636e\uff1f<\/h1>\n<p>\u600e\u4e48\u5165\u95e8\u6570\u636e\u5e93\u7f16\u7a0b\uff1f\u9700\u8981\u5b66\u4e60\u54ea\u4e9b\u77e5\u8bc6\u70b9\uff1f\u8fd9\u662f\u65b0\u624b\u4eec\u521a\u63a5\u89e6\u7f16\u7a0b\u65f6\u5e38\u89c1\u7684\u95ee\u9898\uff1b\u4e0b\u9762\u4e3b\u673a\u5b9d\u8d1d\u5c31\u6765\u7ed9\u5927\u5bb6\u6574\u7406\u5206\u4eab\u4e00\u4e9b\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u80fd\u591f\u7ed9\u521d\u5b66\u8005\u4e00\u4e9b\u5e2e\u52a9\u3002\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u4ecb\u7ecd\u300a\u5982\u4f55\u5728\u6570\u636e\u5e93\u4e2d\u8f7b\u677e\u8bc6\u522b\u4e2d\u6587\u6570\u636e\uff1f\u300b\uff0c\u6d89\u53ca\u5230\uff0c\u6709\u9700\u8981\u7684\u53ef\u4ee5\u6536\u85cf\u4e00\u4e0b<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20241030\/17302664166721c530b9897.jpg\" class=\"aligncenter\"><\/p>\n<p><strong>\u6570\u636e\u5e93\u4e2d\u5982\u4f55\u8f7b\u677e\u8bc6\u522b\u4e2d\u6587\u6570\u636e<\/strong><\/p>\n<p>\u5728\u5904\u7406\u6570\u636e\u5e93\u6570\u636e\u65f6\uff0c\u5224\u65ad\u662f\u5426\u5b58\u5728\u4e2d\u6587\u81f3\u5173\u91cd\u8981\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4e00\u79cd\u5728\u6570\u636e\u5e93\u4e2d\u51c6\u786e\u8bc6\u522b\u4e2d\u6587\u7684\u65b9\u6cd5\u3002<\/p>\n<p>\u9996\u5148\uff0c\u8003\u8651\u5e94\u7528\u7a0b\u5e8f\u4e2d\u5224\u65ad\u4e2d\u6587\u7684\u65b9\u6cd5\u3002\u60a8\u53ef\u4ee5\u5728\u5e94\u7528\u7a0b\u5e8f\u4e2d\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u6216unicode\u7f16\u7801\u6765\u5b9e\u73b0\uff0c\u4f46\u8fd9\u4e9b\u65b9\u6cd5\u53ef\u80fd\u4e0d\u591f\u51c6\u786e\u6216\u9ad8\u6548\u3002<\/p>\n<p>\u56e0\u6b64\uff0c\u66f4\u63a8\u8350\u7684\u65b9\u6cd5\u662f\u5728\u6570\u636e\u5e93\u8868\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u540d\u4e3a\u201cis_cn\u201d\u7684\u5b57\u6bb5\uff0c\u8868\u793a\u201c\u662f\u5426\u6709\u4e2d\u6587\u201d\u3002\u60a8\u53ef\u4ee5\u5c06\u6b64\u5b57\u6bb5\u8bbe\u7f6e\u4e3a\u4e8c\u8fdb\u5236\u7c7b\u578b\uff0c\u503c\u4e3a 0 \u8868\u793a\u6ca1\u6709\u4e2d\u6587\uff0c1 \u8868\u793a\u6709\u4e2d\u6587\u3002<\/p>\n<p>\u7136\u540e\uff0c\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8be2\u6279\u91cf\u66f4\u65b0\u6b64\u5b57\u6bb5\uff1a<\/p>\n<pre>-- \u5047\u8bbe\u8868\u540d\u662f \"my_table\"\nUPDATE my_table SET is_cn = CASE WHEN col_data LIKE '%[\\u4E00-\\u9FA5]%' THEN 1 ELSE 0 END<\/pre>\n<p>\u6b64\u67e5\u8be2\u4f7f\u7528 like \u64cd\u4f5c\u7b26\u548c\u6b63\u5219\u8868\u8fbe\u5f0f [u4e00-u9fa5] \u6765\u68c0\u6d4b\u5217 col_data 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