{"id":177169,"date":"2024-11-08T13:55:18","date_gmt":"2024-11-08T05:55:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/177169\/"},"modified":"2024-11-08T13:55:18","modified_gmt":"2024-11-08T05:55:18","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41074-sql%e7%8b%80%e6%85%8b%ef%bc%9a42000%ef%bc%88er_too_big_fieldlength%ef%bc%89%e5%88%97%ef%bc%85s%e7%9a%84%e9%95%b7","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/177169\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41074 – SQL\u72c0\u614b\uff1a42000\uff08ER_TOO_BIG_FIELDLENGTH\uff09\u5217\u201c\uff05s\u201d\u7684\u9577\u5ea6\u5c0d\u65bc\u5217\u9577\u5ea6\u592a\u5927\uff08\u6700\u5927=%d\uff09\uff1b\u8acb\u4f7f\u7528BLOB"},"content":{"rendered":"

\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41074 – SQL\u72c0\u614b\uff1a42000\uff08ER_TOO_BIG_FIELDLENGTH\uff09<\/h1>\n

\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\u8aa41074\uff0c\u8a72\u932f\u8aa4\u7684SQL\u72c0\u614b\u70ba42000\uff0c\u4e26\u986f\u793a\u4fe1\u606f\uff1a\u201c\u5217\u2018%s\u2019\u7684\u9577\u5ea6\u5c0d\u65bc\u5217\u9577\u5ea6\u592a\u5927\uff08\u6700\u5927=%d\uff09\uff1b\u8acb\u4f7f\u7528BLOB\u201d\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u767c\u751f\u5728\u5617\u8a66\u5275\u5efa\u6216\u4fee\u6539\u8868\u6642\uff0c\u7576\u67d0\u500b\u5217\u7684\u6578\u64da\u985e\u578b\u6216\u9577\u5ea6\u8d85\u904e\u4e86MySQL\u7684\u9650\u5236\u3002<\/p>\n

\u932f\u8aa4\u539f\u56e0\u5206\u6790<\/h2>\n

MySQL\u5c0d\u65bc\u4e0d\u540c\u6578\u64da\u985e\u578b\u7684\u5217\u9577\u5ea6\u6709\u660e\u78ba\u7684\u9650\u5236\u3002\u4f8b\u5982\uff0cVARCHAR\u985e\u578b\u7684\u5217\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u6700\u591a\u53ea\u80fd\u652f\u630165535\u5b57\u7bc0\u7684\u9577\u5ea6\uff0c\u4f46\u9019\u500b\u9650\u5236\u9084\u53d7\u5230\u5176\u4ed6\u5217\u7684\u5f71\u97ff\u3002\u5982\u679c\u8868\u4e2d\u9084\u6709\u5176\u4ed6\u5217\uff0c\u5247\u53ef\u7528\u7684\u5b57\u7bc0\u6578\u6703\u6e1b\u5c11\uff0c\u5f9e\u800c\u5c0e\u81f4\u51fa\u73fe\u932f\u8aa41074\u3002<\/p>\n

\u6b64\u5916\uff0c\u7576\u4f7f\u7528UTF-8\u5b57\u7b26\u96c6\u6642\uff0c\u6bcf\u500b\u5b57\u7b26\u53ef\u80fd\u4f54\u7528\u591a\u90544\u500b\u5b57\u7bc0\uff0c\u9019\u610f\u5473\u8457\u5982\u679c\u4f60\u5b9a\u7fa9\u4e86\u4e00\u500bVARCHAR(20000)\u7684\u5217\uff0c\u5be6\u969b\u4e0a\u53ef\u80fd\u6703\u8d85\u904e65535\u5b57\u7bc0\u7684\u9650\u5236\uff0c\u5f9e\u800c\u5f15\u767c\u932f\u8aa4\u3002<\/p>\n

\u4fee\u5fa9\u65b9\u6cd5<\/h2>\n

\u8981\u4fee\u5fa9\u9019\u500b\u932f\u8aa4\uff0c\u53ef\u4ee5\u8003\u616e\u4ee5\u4e0b\u5e7e\u7a2e\u65b9\u6cd5\uff1a<\/p>\n

1. \u4f7f\u7528BLOB\u6216TEXT\u985e\u578b<\/h3>\n

\u5982\u679c\u4f60\u9700\u8981\u5b58\u5132\u5927\u91cf\u6587\u672c\u6578\u64da\uff0c\u8003\u616e\u5c07\u5217\u7684\u6578\u64da\u985e\u578b\u66f4\u6539\u70baBLOB\u6216TEXT\u3002\u9019\u4e9b\u985e\u578b\u4e0d\u53d7\u5217\u9577\u5ea6\u7684\u9650\u5236\uff0c\u9069\u5408\u5b58\u5132\u5927\u5bb9\u91cf\u6578\u64da\u3002<\/p>\n

ALTER TABLE your_table MODIFY your_column BLOB;<\/code><\/pre>\n
2. \u6e1b\u5c11VARCHAR\u7684\u9577\u5ea6<\/h3>\n
\u5982\u679c\u4f60\u4ecd\u7136\u5e0c\u671b\u4f7f\u7528VARCHAR\u985e\u578b\uff0c\u5247\u53ef\u4ee5\u8003\u616e\u6e1b\u5c11\u5217\u7684\u9577\u5ea6\u3002\u6839\u64da\u5be6\u969b\u9700\u6c42\uff0c\u5c07VARCHAR\u7684\u9577\u5ea6\u8a2d\u7f6e\u70ba\u4e00\u500b\u5408\u7406\u7684\u503c\uff0c\u4ee5\u907f\u514d\u8d85\u904e\u9650\u5236\u3002<\/p>\n
ALTER TABLE your_table MODIFY your_column VARCHAR(255);<\/code><\/pre>\n
3. \u6aa2\u67e5\u5176\u4ed6\u5217\u7684\u6578\u64da\u985e\u578b<\/h3>\n
\u5728\u8a2d\u8a08\u6578\u64da\u8868\u6642\uff0c\u61c9\u8a72\u4ed4\u7d30\u6aa2\u67e5\u6240\u6709\u5217\u7684\u6578\u64da\u985e\u578b\u548c\u9577\u5ea6\u3002\u78ba\u4fdd\u4e0d\u6703\u56e0\u70ba\u5176\u4ed6\u5217\u7684\u5b58\u5728\u800c\u5c0e\u81f4\u53ef\u7528\u5b57\u7bc0\u6578\u4e0d\u8db3\u3002\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0bSQL\u8a9e\u53e5\u67e5\u770b\u8868\u7684\u7d50\u69cb\uff1a<\/p>\n
SHOW CREATE TABLE your_table;<\/code><\/pre>\n
4. \u4f7f\u7528\u5408\u9069\u7684\u5b57\u7b26\u96c6<\/h3>\n
\u9078\u64c7\u5408\u9069\u7684\u5b57\u7b26\u96c6\u4e5f\u80fd\u5e6b\u52a9\u6e1b\u5c11\u5b57\u7bc0\u7684\u4f7f\u7528\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u7684\u6578\u64da\u4e3b\u8981\u662f\u82f1\u6587\u5b57\u7b26\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528latin1\u5b57\u7b26\u96c6\uff0c\u9019\u6a23\u6bcf\u500b\u5b57\u7b26\u53ea\u4f54\u75281\u500b\u5b57\u7bc0\u3002<\/p>\n
ALTER TABLE your_table CONVERT TO CHARACTER SET latin1;<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
MySQL\u932f\u8aa41074\u901a\u5e38\u662f\u7531\u65bc\u5217\u7684\u9577\u5ea6\u8d85\u904e\u4e86MySQL\u7684\u9650\u5236\u800c\u5f15\u8d77\u7684\u3002\u901a\u904e\u4f7f\u7528BLOB\u6216TEXT\u985e\u578b\u3001\u6e1b\u5c11VARCHAR\u7684\u9577\u5ea6\u3001\u6aa2\u67e5\u5176\u4ed6\u5217\u7684\u6578\u64da\u985e\u578b\u4ee5\u53ca\u9078\u64c7\u5408\u9069\u7684\u5b57\u7b26\u96c6\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u4fee\u5fa9\u9019\u500b\u932f\u8aa4\u3002\u9019\u4e9b\u65b9\u6cd5\u4e0d\u50c5\u80fd\u5e6b\u52a9\u958b\u767c\u8005\u89e3\u6c7a\u7576\u524d\u7684\u554f\u984c\uff0c\u9084\u80fd\u5728\u672a\u4f86\u7684\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\u907f\u514d\u985e\u4f3c\u7684\u932f\u8aa4\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684 \u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u7528\u6236\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f\u6578\u64da\u5eab\u7ba1\u7406\u9084\u662f\u7db2\u7ad9\u6258\u7ba1\uff0c\u6211\u5011\u7684 \u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u53ef\u9760\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4fee\u5fa9MySQL\u932f\u8aa41074\u7684\u65b9\u6cd5\uff0c\u89e3\u91cb\u5982\u4f55\u8655\u7406\u5217\u9577\u5ea6\u904e\u5927\u554f\u984c\uff0c\u5efa\u8b70\u4f7f\u7528BLOB\u985e\u578b\u4ee5\u7b26\u5408\u6700\u5927\u9577\u5ea6\u9650\u5236\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-177169","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177169","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=177169"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177169\/revisions"}],"predecessor-version":[{"id":177170,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177169\/revisions\/177170"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=177169"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=177169"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=177169"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}