{"id":178452,"date":"2024-11-08T18:05:18","date_gmt":"2024-11-08T10:05:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/178452\/"},"modified":"2024-11-08T18:05:19","modified_gmt":"2024-11-08T10:05:19","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41330-sqlstate-42000-er_sp_dup_var-%e9%87%8d%e8%a4%87%e7%9a%84%e8%ae%8a%e9%87%8f%ef%bc%9as","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/178452\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41330 &#8211; SQLSTATE: 42000 (ER_SP_DUP_VAR) \u91cd\u8907\u7684\u8b8a\u91cf\uff1a%s"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41330-sqlstate-42000-er_sp_dup_var-%e9%87%8d%e8%a4%87%e7%9a%84%e8%ae%8a%e9%87%8f%ef%bc%9as-IPGCSkZRrm\">\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41330 &#8211; SQLSTATE: 42000 (ER_SP_DUP_VAR) \u91cd\u8907\u7684\u8b8a\u91cf\uff1a%s<\/h1>\n<p>\u5728\u4f7f\u7528MySQL\u9032\u884c\u6578\u64da\u5eab\u7ba1\u7406\u6642\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u932f\u8aa41330\uff0c\u8a72\u932f\u8aa4\u7684SQLSTATE\u4ee3\u78bc\u70ba42000\uff0c\u4e26\u4e14\u986f\u793a\u70ba\u201c\u91cd\u8907\u7684\u8b8a\u91cf\u201d\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u767c\u751f\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\uff0c\u7576\u4f60\u5617\u8a66\u5b9a\u7fa9\u4e00\u500b\u5df2\u7d93\u5b58\u5728\u7684\u8b8a\u91cf\u6642\uff0cMySQL\u6703\u5831\u544a\u6b64\u932f\u8aa4\u3002\u672c\u6587\u5c07\u6df1\u5165\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-IPGCSkZRrm\">\u932f\u8aa4\u539f\u56e0<\/h2>\n<p>\u932f\u8aa41330\u7684\u4e3b\u8981\u539f\u56e0\u662f\u5b58\u5132\u904e\u7a0b\u4e2d\u5b9a\u7fa9\u4e86\u91cd\u8907\u7684\u8b8a\u91cf\u540d\u7a31\u3002\u7576\u4f60\u5728\u540c\u4e00\u500b\u5b58\u5132\u904e\u7a0b\u4e2d\u4f7f\u7528\u76f8\u540c\u7684\u8b8a\u91cf\u540d\u7a31\u6642\uff0cMySQL\u7121\u6cd5\u78ba\u5b9a\u8a72\u4f7f\u7528\u54ea\u4e00\u500b\u8b8a\u91cf\uff0c\u5f9e\u800c\u5c0e\u81f4\u932f\u8aa4\u7684\u767c\u751f\u3002\u9019\u7a2e\u60c5\u6cc1\u901a\u5e38\u767c\u751f\u5728\u4ee5\u4e0b\u5e7e\u7a2e\u60c5\u6cc1\u4e0b\uff1a<\/p>\n<ul>\n<li>\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\u591a\u6b21\u5b9a\u7fa9\u76f8\u540c\u540d\u7a31\u7684\u8b8a\u91cf\u3002<\/li>\n<li>\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\u4f7f\u7528\u4e86\u8207\u53c3\u6578\u540d\u7a31\u76f8\u540c\u7684\u8b8a\u91cf\u540d\u7a31\u3002<\/li>\n<li>\u5728\u4e0d\u540c\u7684\u4f5c\u7528\u57df\u4e2d\u4f7f\u7528\u4e86\u76f8\u540c\u7684\u8b8a\u91cf\u540d\u7a31\uff0c\u5c0e\u81f4\u885d\u7a81\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9%e9%8c%af%e8%aa%a41330-IPGCSkZRrm\">\u5982\u4f55\u4fee\u5fa9\u932f\u8aa41330<\/h2>\n<p>\u8981\u4fee\u5fa9MySQL\u932f\u8aa41330\uff0c\u958b\u767c\u8005\u9700\u8981\u6aa2\u67e5\u5b58\u5132\u904e\u7a0b\u4e2d\u7684\u8b8a\u91cf\u5b9a\u7fa9\uff0c\u78ba\u4fdd\u6bcf\u500b\u8b8a\u91cf\u90fd\u6709\u552f\u4e00\u7684\u540d\u7a31\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5177\u9ad4\u7684\u6b65\u9a5f\u548c\u793a\u4f8b\uff1a<\/p>\n<h3 id=\"%e6%ad%a5%e9%a9%9f1%ef%bc%9a%e6%aa%a2%e6%9f%a5%e8%ae%8a%e9%87%8f%e5%ae%9a%e7%be%a9-IPGCSkZRrm\">\u6b65\u9a5f1\uff1a\u6aa2\u67e5\u8b8a\u91cf\u5b9a\u7fa9<\/h3>\n<pre><code>DELIMITER \/\/\nCREATE PROCEDURE example_procedure(IN param1 INT)\nBEGIN\n    DECLARE var1 INT;\n    DECLARE var1 INT; -- \u9019\u88e1\u6703\u5c0e\u81f4\u932f\u8aa41330\n    SET var1 = param1;\nEND \/\/\nDELIMITER ;\n<\/code><\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u8b8a\u91cf<code>var1<\/code>\u88ab\u5b9a\u7fa9\u4e86\u5169\u6b21\uff0c\u9019\u5c07\u5c0e\u81f4\u932f\u8aa41330\u3002\u8981\u4fee\u5fa9\u6b64\u932f\u8aa4\uff0c\u53ea\u9700\u522a\u9664\u91cd\u8907\u7684\u8b8a\u91cf\u5b9a\u7fa9\uff1a<\/p>\n<pre><code>DELIMITER \/\/\nCREATE PROCEDURE example_procedure(IN param1 INT)\nBEGIN\n    DECLARE var1 INT; -- \u4fdd\u7559\u4e00\u6b21\u5b9a\u7fa9\n    SET var1 = param1;\nEND \/\/\nDELIMITER ;\n<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f2%ef%bc%9a%e4%bd%bf%e7%94%a8%e4%b8%8d%e5%90%8c%e7%9a%84%e8%ae%8a%e9%87%8f%e5%90%8d%e7%a8%b1-IPGCSkZRrm\">\u6b65\u9a5f2\uff1a\u4f7f\u7528\u4e0d\u540c\u7684\u8b8a\u91cf\u540d\u7a31<\/h3>\n<p>\u5982\u679c\u5b58\u5132\u904e\u7a0b\u4e2d\u9700\u8981\u4f7f\u7528\u591a\u500b\u8b8a\u91cf\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u4e0d\u540c\u7684\u540d\u7a31\u4f86\u907f\u514d\u885d\u7a81\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>DELIMITER \/\/\nCREATE PROCEDURE example_procedure(IN param1 INT)\nBEGIN\n    DECLARE var1 INT;\n    DECLARE var2 INT; -- \u4f7f\u7528\u4e0d\u540c\u7684\u8b8a\u91cf\u540d\u7a31\n    SET var1 = param1;\n    SET var2 = var1 + 10;\nEND \/\/\nDELIMITER ;\n<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f3%ef%bc%9a%e6%aa%a2%e6%9f%a5%e5%8f%83%e6%95%b8%e5%90%8d%e7%a8%b1-IPGCSkZRrm\">\u6b65\u9a5f3\uff1a\u6aa2\u67e5\u53c3\u6578\u540d\u7a31<\/h3>\n<p>\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\uff0c\u53c3\u6578\u540d\u7a31\u548c\u8b8a\u91cf\u540d\u7a31\u4e0d\u80fd\u76f8\u540c\u3002\u78ba\u4fdd\u53c3\u6578\u540d\u7a31\u8207\u5167\u90e8\u8b8a\u91cf\u540d\u7a31\u4e0d\u540c\uff0c\u4ee5\u907f\u514d\u885d\u7a81\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>DELIMITER \/\/\nCREATE PROCEDURE example_procedure(IN input_param INT)\nBEGIN\n    DECLARE local_var INT; -- \u8b8a\u91cf\u540d\u7a31\u4e0d\u540c\u65bc\u53c3\u6578\u540d\u7a31\n    SET local_var = input_param;\nEND \/\/\nDELIMITER ;\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-IPGCSkZRrm\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u932f\u8aa41330 &#8211; SQLSTATE: 42000 (ER_SP_DUP_VAR) \u662f\u7531\u65bc\u5b58\u5132\u904e\u7a0b\u4e2d\u91cd\u8907\u7684\u8b8a\u91cf\u540d\u7a31\u5f15\u8d77\u7684\u3002\u901a\u904e\u6aa2\u67e5\u8b8a\u91cf\u5b9a\u7fa9\u3001\u4f7f\u7528\u4e0d\u540c\u7684\u8b8a\u91cf\u540d\u7a31\u4ee5\u53ca\u78ba\u4fdd\u53c3\u6578\u540d\u7a31\u4e0d\u8207\u8b8a\u91cf\u540d\u7a31\u885d\u7a81\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u4fee\u5fa9\u6b64\u932f\u8aa4\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u6578\u64da\u5eab\u7ba1\u7406\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u904b\u884c\u9806\u5229\uff0c\u4e26\u6e1b\u5c11\u985e\u4f3c\u554f\u984c\u7684\u767c\u751f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4fee\u5fa9MySQL\u932f\u8aa41330 (ER_SP_DUP_VAR) \u7684\u65b9\u6cd5\uff0c\u89e3\u6c7a\u91cd\u8907\u8b8a\u91cf\u554f\u984c\uff0c\u78ba\u4fddSQL\u8a9e\u53e5\u6b63\u78ba\u57f7\u884c\uff0c\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\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-178452","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178452","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=178452"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178452\/revisions"}],"predecessor-version":[{"id":178453,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178452\/revisions\/178453"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=178452"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=178452"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=178452"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}