{"id":178462,"date":"2024-11-08T18:10:19","date_gmt":"2024-11-08T10:10:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/178462\/"},"modified":"2024-11-08T18:10:19","modified_gmt":"2024-11-08T10:10:19","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41335-sqlstate-42000-er_sp_no_use-%e4%b8%8d%e5%85%81%e8%a8%b1%e5%9c%a8%e5%ad%98%e5%84%b2%e9%81%8e%e7%a8%8b%e4%b8%ad%e4%bd%bf%e7%94%a8use","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/178462\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41335 – SQLSTATE: 42000 (ER_SP_NO_USE) \u4e0d\u5141\u8a31\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\u4f7f\u7528USE"},"content":{"rendered":"

\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41335 – SQLSTATE: 42000 (ER_SP_NO_USE) \u4e0d\u5141\u8a31\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\u4f7f\u7528USE<\/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\u8aa41335\uff0c\u5177\u9ad4\u8868\u73fe\u70baSQLSTATE: 42000 (ER_SP_NO_USE)\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u767c\u751f\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\u4f7f\u7528\u4e86USE\u8a9e\u53e5\uff0c\u9019\u5728MySQL\u4e2d\u662f\u88ab\u7981\u6b62\u7684\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u500b\u932f\u8aa4\u7684\u539f\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n

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

MySQL\u7684\u5b58\u5132\u904e\u7a0b\u662f\u4e00\u7a2e\u5728\u6578\u64da\u5eab\u4e2d\u57f7\u884c\u7684\u9810\u7de8\u8b6fSQL\u4ee3\u78bc\u96c6\u5408\u3002\u9019\u4e9b\u904e\u7a0b\u53ef\u4ee5\u63d0\u9ad8\u6578\u64da\u64cd\u4f5c\u7684\u6548\u7387\uff0c\u4e26\u4e14\u80fd\u5920\u5c01\u88dd\u8907\u96dc\u7684\u908f\u8f2f\u3002\u7136\u800c\uff0cMySQL\u5c0d\u65bc\u5b58\u5132\u904e\u7a0b\u4e2d\u7684\u67d0\u4e9b\u64cd\u4f5c\u6709\u56b4\u683c\u7684\u9650\u5236\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u4e0d\u5141\u8a31\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\u4f7f\u7528USE\u8a9e\u53e5\u3002<\/p>\n

USE\u8a9e\u53e5\u7684\u4e3b\u8981\u529f\u80fd\u662f\u5207\u63db\u7576\u524d\u6578\u64da\u5eab\u3002\u7576\u4f60\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\u4f7f\u7528USE\u8a9e\u53e5\u6642\uff0cMySQL\u7121\u6cd5\u78ba\u5b9a\u61c9\u8a72\u4f7f\u7528\u54ea\u500b\u6578\u64da\u5eab\uff0c\u56e0\u70ba\u5b58\u5132\u904e\u7a0b\u7684\u4e0a\u4e0b\u6587\u662f\u56fa\u5b9a\u7684\u3002\u56e0\u6b64\uff0c\u9019\u6703\u5c0e\u81f4\u932f\u8aa41335\u7684\u51fa\u73fe\u3002<\/p>\n

\u5982\u4f55\u4fee\u5fa9\u932f\u8aa41335<\/h2>\n

\u8981\u4fee\u5fa9\u9019\u500b\u932f\u8aa4\uff0c\u958b\u767c\u8005\u9700\u8981\u907f\u514d\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\u4f7f\u7528USE\u8a9e\u53e5\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u89e3\u6c7a\u65b9\u6848\u548c\u6700\u4f73\u5be6\u8e10\uff1a<\/p>\n

1. \u4f7f\u7528\u5b8c\u6574\u7684\u6578\u64da\u5eab\u540d\u7a31<\/h3>\n

\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\uff0c\u76f4\u63a5\u4f7f\u7528\u5b8c\u6574\u7684\u6578\u64da\u5eab\u540d\u7a31\u4f86\u5f15\u7528\u8868\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4f60\u6709\u4e00\u500b\u540d\u70ba\u201cmydb\u201d\u7684\u6578\u64da\u5eab\u548c\u4e00\u500b\u540d\u70ba\u201cusers\u201d\u7684\u8868\uff0c\u5247\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n

SELECT * FROM mydb.users;<\/code><\/pre>\n
\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u4f7f\u7528USE\u8a9e\u53e5\uff0c\u4e26\u4e14\u80fd\u5920\u6e05\u695a\u5730\u6307\u5b9a\u8981\u64cd\u4f5c\u7684\u6578\u64da\u5eab\u3002<\/p>\n
2. \u4f7f\u7528\u53c3\u6578\u5316\u67e5\u8a62<\/h3>\n
\u5982\u679c\u4f60\u7684\u5b58\u5132\u904e\u7a0b\u9700\u8981\u6839\u64da\u4e0d\u540c\u7684\u6578\u64da\u5eab\u9032\u884c\u64cd\u4f5c\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u53c3\u6578\u5316\u67e5\u8a62\u3002\u9019\u6a23\uff0c\u4f60\u53ef\u4ee5\u5c07\u6578\u64da\u5eab\u540d\u7a31\u4f5c\u70ba\u53c3\u6578\u50b3\u905e\u7d66\u5b58\u5132\u904e\u7a0b\uff0c\u7136\u5f8c\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528\u9019\u500b\u53c3\u6578\u3002\u4f8b\u5982\uff1a<\/p>\n
CREATE PROCEDURE GetUser(IN dbName VARCHAR(255))\nBEGIN\n    SET @query = CONCAT('SELECT * FROM ', dbName, '.users');\n    PREPARE stmt FROM @query;\n    EXECUTE stmt;\n    DEALLOCATE PREPARE stmt;\nEND;<\/code><\/pre>\n
\u9019\u6a23\u7684\u505a\u6cd5\u4e0d\u50c5\u80fd\u5920\u907f\u514d\u932f\u8aa4\uff0c\u9084\u80fd\u63d0\u9ad8\u5b58\u5132\u904e\u7a0b\u7684\u9748\u6d3b\u6027\u3002<\/p>\n
3. \u6aa2\u67e5\u5b58\u5132\u904e\u7a0b\u7684\u4e0a\u4e0b\u6587<\/h3>\n
\u5728\u8a2d\u8a08\u5b58\u5132\u904e\u7a0b\u6642\uff0c\u78ba\u4fdd\u4f60\u6e05\u695a\u5176\u4e0a\u4e0b\u6587\u3002\u907f\u514d\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\u9032\u884c\u6578\u64da\u5eab\u5207\u63db\uff0c\u4e26\u59cb\u7d42\u4f7f\u7528\u660e\u78ba\u7684\u6578\u64da\u5eab\u548c\u8868\u540d\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
MySQL\u932f\u8aa41335 – SQLSTATE: 42000 (ER_SP_NO_USE) \u662f\u7531\u65bc\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\u4f7f\u7528\u4e86USE\u8a9e\u53e5\u800c\u5f15\u8d77\u7684\u3002\u70ba\u4e86\u89e3\u6c7a\u9019\u500b\u554f\u984c\uff0c\u958b\u767c\u8005\u61c9\u8a72\u907f\u514d\u4f7f\u7528USE\u8a9e\u53e5\uff0c\u4e26\u63a1\u7528\u5b8c\u6574\u7684\u6578\u64da\u5eab\u540d\u7a31\u6216\u53c3\u6578\u5316\u67e5\u8a62\u4f86\u9032\u884c\u6578\u64da\u64cd\u4f5c\u3002\u9019\u4e0d\u50c5\u80fd\u5920\u4fee\u5fa9\u932f\u8aa4\uff0c\u9084\u80fd\u63d0\u9ad8\u4ee3\u78bc\u7684\u53ef\u8b80\u6027\u548c\u53ef\u7dad\u8b77\u6027\u3002<\/p>\n
\u5982\u679c\u4f60\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 \u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f\u6578\u64da\u5eab\u7ba1\u7406\u9084\u662f\u61c9\u7528\u90e8\u7f72\uff0c\u6211\u5011\u7684 \u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u4f60\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4fee\u5fa9MySQL\u932f\u8aa41335 (ER_SP_NO_USE) \u7684\u65b9\u6cd5\uff0c\u4e86\u89e3\u70ba\u4f55\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\u4e0d\u5141\u8a31\u4f7f\u7528USE\u8a9e\u53e5\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\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-178462","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178462","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=178462"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178462\/revisions"}],"predecessor-version":[{"id":178463,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178462\/revisions\/178463"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=178462"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=178462"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=178462"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}