{"id":178231,"date":"2024-11-08T17:44:20","date_gmt":"2024-11-08T09:44:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/178231\/"},"modified":"2024-11-08T17:44:21","modified_gmt":"2024-11-08T09:44:21","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41308-sqlstate-42000-er_sp_label_redefine-%e9%87%8d%e6%96%b0%e5%ae%9a%e7%be%a9s%e6%a8%99%e7%b1%a4","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/178231\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41308 &#8211; SQLSTATE: 42000 (ER_SP_LABEL_REDEFINE) \u91cd\u65b0\u5b9a\u7fa9%s\u6a19\u7c64"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41308-sqlstate-42000-er_sp_label_redefine-%e9%87%8d%e6%96%b0%e5%ae%9a%e7%be%a9s%e6%a8%99%e7%b1%a4-aXsEqxBQBk\">\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41308 &#8211; SQLSTATE: 42000 (ER_SP_LABEL_REDEFINE) \u91cd\u65b0\u5b9a\u7fa9%s\u6a19\u7c64<\/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\u8aa41308\uff0c\u8a72\u932f\u8aa4\u7684SQLSTATE\u4ee3\u78bc\u70ba42000\uff0c\u8868\u793a\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\u91cd\u65b0\u5b9a\u7fa9\u4e86\u6a19\u7c64\u3002\u9019\u500b\u554f\u984c\u901a\u5e38\u767c\u751f\u5728\u5275\u5efa\u6216\u4fee\u6539\u5b58\u5132\u904e\u7a0b\u6642\uff0c\u7576\u4f60\u5617\u8a66\u4f7f\u7528\u5df2\u7d93\u5b58\u5728\u7684\u6a19\u7c64\u540d\u7a31\u6642\uff0cMySQL\u6703\u5831\u544a\u6b64\u932f\u8aa4\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-aXsEqxBQBk\">\u932f\u8aa4\u539f\u56e0<\/h2>\n<p>\u932f\u8aa41308\u7684\u4e3b\u8981\u539f\u56e0\u662f\u5b58\u5132\u904e\u7a0b\u4e2d\u4f7f\u7528\u4e86\u91cd\u8907\u7684\u6a19\u7c64\u540d\u7a31\u3002\u5728MySQL\u4e2d\uff0c\u6a19\u7c64\u7528\u65bc\u6a19\u8b58\u5b58\u5132\u904e\u7a0b\u4e2d\u7684\u7279\u5b9a\u4f4d\u7f6e\uff0c\u901a\u5e38\u7528\u65bc\u63a7\u5236\u6d41\u7a0b\u7684\u8df3\u8f49\uff0c\u4f8b\u5982\u4f7f\u7528 <code>GOTO<\/code> \u8a9e\u53e5\u3002\u7576\u4f60\u5728\u540c\u4e00\u500b\u5b58\u5132\u904e\u7a0b\u4e2d\u5b9a\u7fa9\u4e86\u5169\u500b\u76f8\u540c\u7684\u6a19\u7c64\u6642\uff0cMySQL\u5c07\u7121\u6cd5\u78ba\u5b9a\u61c9\u8a72\u8df3\u8f49\u5230\u54ea\u4e00\u500b\u6a19\u7c64\uff0c\u5f9e\u800c\u5f15\u767c\u932f\u8aa4\u3002<\/p>\n<h2 id=\"%e7%a4%ba%e4%be%8b-aXsEqxBQBk\">\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u5f15\u767c\u6b64\u932f\u8aa4\uff1a<\/p>\n<pre><code>DELIMITER \/\/\nCREATE PROCEDURE example_procedure()\nBEGIN\n    label1: \n    SELECT 'This is label 1';\n    \n    label1:  -- \u91cd\u8907\u5b9a\u7fa9\u6a19\u7c64\n    SELECT 'This is another label 1';\nEND \/\/\nDELIMITER ;\n<\/code><\/pre>\n<p>\u5728\u4e0a\u8ff0\u4ee3\u78bc\u4e2d\uff0c<code>label1<\/code> \u88ab\u5b9a\u7fa9\u4e86\u5169\u6b21\uff0c\u9019\u5c07\u5c0e\u81f4\u932f\u8aa41308\u7684\u767c\u751f\u3002<\/p>\n<h2 id=\"%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88-aXsEqxBQBk\">\u89e3\u6c7a\u65b9\u6848<\/h2>\n<p>\u8981\u4fee\u5fa9\u6b64\u932f\u8aa4\uff0c\u958b\u767c\u8005\u9700\u8981\u78ba\u4fdd\u6bcf\u500b\u6a19\u7c64\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\u90fd\u662f\u552f\u4e00\u7684\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u89e3\u6c7a\u65b9\u6848\uff1a<\/p>\n<ul>\n<li><strong>\u6aa2\u67e5\u6a19\u7c64\u540d\u7a31\uff1a<\/strong>\u5728\u5275\u5efa\u6216\u4fee\u6539\u5b58\u5132\u904e\u7a0b\u4e4b\u524d\uff0c\u4ed4\u7d30\u6aa2\u67e5\u6240\u6709\u6a19\u7c64\u540d\u7a31\uff0c\u78ba\u4fdd\u6c92\u6709\u91cd\u8907\u3002<\/li>\n<li><strong>\u91cd\u547d\u540d\u6a19\u7c64\uff1a<\/strong>\u5982\u679c\u767c\u73fe\u91cd\u8907\u7684\u6a19\u7c64\uff0c\u8acb\u5c07\u5176\u91cd\u547d\u540d\u70ba\u552f\u4e00\u7684\u540d\u7a31\u3002\u4f8b\u5982\uff1a<\/li>\n<\/ul>\n<pre><code>DELIMITER \/\/\nCREATE PROCEDURE example_procedure()\nBEGIN\n    label1: \n    SELECT 'This is label 1';\n    \n    label2:  -- \u5c07\u91cd\u8907\u7684\u6a19\u7c64\u91cd\u547d\u540d\n    SELECT 'This is label 2';\nEND \/\/\nDELIMITER ;\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4fee\u6b63\u5f8c\u7684\u793a\u4f8b\u4e2d\uff0c\u5169\u500b\u6a19\u7c64\u7684\u540d\u7a31\u5df2\u7d93\u88ab\u66f4\u6539\u70ba <code>label1<\/code> \u548c <code>label2<\/code>\uff0c\u9019\u6a23\u5c31\u4e0d\u6703\u518d\u5f15\u767c\u932f\u8aa4\u3002<\/p>\n<h2 id=\"%e5%85%b6%e4%bb%96%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-aXsEqxBQBk\">\u5176\u4ed6\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u9664\u4e86\u78ba\u4fdd\u6a19\u7c64\u540d\u7a31\u7684\u552f\u4e00\u6027\u5916\uff0c\u9084\u61c9\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u8a3b\u89e3\uff1a<\/strong>\u5728\u4ee3\u78bc\u4e2d\u6dfb\u52a0\u8a3b\u89e3\u53ef\u4ee5\u5e6b\u52a9\u4f60\u66f4\u597d\u5730\u7406\u89e3\u6a19\u7c64\u7684\u7528\u9014\uff0c\u5f9e\u800c\u907f\u514d\u91cd\u8907\u5b9a\u7fa9\u3002<\/li>\n<li><strong>\u6e2c\u8a66\u5b58\u5132\u904e\u7a0b\uff1a<\/strong>\u5728\u90e8\u7f72\u4e4b\u524d\uff0c\u52d9\u5fc5\u6e2c\u8a66\u5b58\u5132\u904e\u7a0b\u4ee5\u78ba\u4fdd\u5176\u6b63\u5e38\u904b\u884c\uff0c\u4e26\u4e14\u4e0d\u6703\u5f15\u767c\u4efb\u4f55\u932f\u8aa4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-aXsEqxBQBk\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u932f\u8aa41308\uff08SQLSTATE: 42000\uff09\u901a\u5e38\u662f\u7531\u65bc\u5b58\u5132\u904e\u7a0b\u4e2d\u6a19\u7c64\u540d\u7a31\u7684\u91cd\u8907\u5b9a\u7fa9\u6240\u5f15\u8d77\u7684\u3002\u901a\u904e\u6aa2\u67e5\u548c\u91cd\u547d\u540d\u6a19\u7c64\uff0c\u53ef\u4ee5\u8f15\u9b06\u89e3\u6c7a\u6b64\u554f\u984c\u3002\u78ba\u4fdd\u5728\u958b\u767c\u904e\u7a0b\u4e2d\u9075\u5faa\u826f\u597d\u7684\u7de8\u78bc\u7fd2\u6163\uff0c\u9019\u5c07\u6709\u52a9\u65bc\u6e1b\u5c11\u985e\u4f3c\u932f\u8aa4\u7684\u767c\u751f\u3002\u5982\u679c\u60a8\u9700\u8981\u7a69\u5b9a\u7684\u6578\u64da\u5eab\u74b0\u5883\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u60a8\u7684\u6578\u64da\u5eab\u904b\u884c\u6d41\u66a2\uff0c\u4e26\u4e14\u80fd\u5920\u5feb\u901f\u89e3\u6c7a\u5404\u7a2e\u6280\u8853\u554f\u984c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4fee\u5fa9MySQL\u932f\u8aa41308 (ER_SP_LABEL_REDEFINE) \u7684\u65b9\u6cd5\uff0c\u89e3\u6c7a\u91cd\u65b0\u5b9a\u7fa9\u6a19\u7c64\u554f\u984c\uff0c\u78ba\u4fdd\u5b58\u5132\u904e\u7a0b\u6b63\u5e38\u904b\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-178231","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178231","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=178231"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178231\/revisions"}],"predecessor-version":[{"id":178232,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178231\/revisions\/178232"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=178231"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=178231"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=178231"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}