{"id":178444,"date":"2024-11-08T18:01:27","date_gmt":"2024-11-08T10:01:27","guid":{"rendered":"https:\/\/server.hk\/cnblog\/178444\/"},"modified":"2024-11-08T18:01:28","modified_gmt":"2024-11-08T10:01:28","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41326-sqlstate-42000-er_sp_undeclared_var-%e6%9c%aa%e8%81%b2%e6%98%8e%e7%9a%84%e8%ae%8a%e9%87%8f%ef%bc%9as","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/178444\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41326 &#8211; SQLSTATE: 42000 (ER_SP_UNDECLARED_VAR) \u672a\u8072\u660e\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%a41326-sqlstate-42000-er_sp_undeclared_var-%e6%9c%aa%e8%81%b2%e6%98%8e%e7%9a%84%e8%ae%8a%e9%87%8f%ef%bc%9as-NWkjVzArUZ\">\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41326 &#8211; SQLSTATE: 42000 (ER_SP_UNDECLARED_VAR) \u672a\u8072\u660e\u7684\u8b8a\u91cf\uff1a%s<\/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\u8aa41326\uff0c\u8a72\u932f\u8aa4\u7684SQLSTATE\u4ee3\u78bc\u70ba42000\uff0c\u8868\u793a\u5b58\u5728\u672a\u8072\u660e\u7684\u8b8a\u91cf\u3002\u9019\u500b\u554f\u984c\u901a\u5e38\u51fa\u73fe\u5728\u5b58\u5132\u904e\u7a0b\u6216\u89f8\u767c\u5668\u4e2d\uff0c\u7576\u4f60\u5617\u8a66\u4f7f\u7528\u4e00\u500b\u672a\u88ab\u5b9a\u7fa9\u7684\u8b8a\u91cf\u6642\uff0c\u5c31\u6703\u5f15\u767c\u6b64\u932f\u8aa4\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u500b\u932f\u8aa4\u7684\u539f\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a41326%e7%9a%84%e5%8e%9f%e5%9b%a0-NWkjVzArUZ\">\u932f\u8aa41326\u7684\u539f\u56e0<\/h2>\n<p>\u932f\u8aa41326\u901a\u5e38\u767c\u751f\u5728\u4ee5\u4e0b\u5e7e\u7a2e\u60c5\u6cc1\u4e0b\uff1a<\/p>\n<ul>\n<li><strong>\u8b8a\u91cf\u672a\u8072\u660e\uff1a<\/strong>\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\u4f7f\u7528\u8b8a\u91cf\u4e4b\u524d\uff0c\u5fc5\u9808\u5148\u8072\u660e\u5b83\u3002\u5982\u679c\u4f60\u5617\u8a66\u4f7f\u7528\u4e00\u500b\u672a\u8072\u660e\u7684\u8b8a\u91cf\uff0cMySQL\u5c07\u7121\u6cd5\u8b58\u5225\uff0c\u5f9e\u800c\u5f15\u767c\u932f\u8aa4\u3002<\/li>\n<li><strong>\u8b8a\u91cf\u4f5c\u7528\u57df\u554f\u984c\uff1a<\/strong>\u8b8a\u91cf\u7684\u4f5c\u7528\u57df\u53ef\u80fd\u6703\u5f71\u97ff\u5176\u53ef\u7528\u6027\u3002\u5982\u679c\u8b8a\u91cf\u5728\u4e00\u500b\u5340\u584a\u4e2d\u8072\u660e\uff0c\u4f46\u5728\u53e6\u4e00\u500b\u5340\u584a\u4e2d\u4f7f\u7528\uff0c\u5247\u6703\u5c0e\u81f4\u672a\u8072\u660e\u7684\u8b8a\u91cf\u932f\u8aa4\u3002<\/li>\n<li><strong>\u62fc\u5beb\u932f\u8aa4\uff1a<\/strong>\u5728\u4f7f\u7528\u8b8a\u91cf\u6642\uff0c\u62fc\u5beb\u932f\u8aa4\u4e5f\u6703\u5c0e\u81f4MySQL\u7121\u6cd5\u8b58\u5225\u8a72\u8b8a\u91cf\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9%e9%8c%af%e8%aa%a41326-NWkjVzArUZ\">\u5982\u4f55\u4fee\u5fa9\u932f\u8aa41326<\/h2>\n<p>\u4fee\u5fa9MySQL\u932f\u8aa41326\u7684\u904e\u7a0b\u901a\u5e38\u6d89\u53ca\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e8%ae%8a%e9%87%8f%e8%81%b2%e6%98%8e-NWkjVzArUZ\">1. \u6aa2\u67e5\u8b8a\u91cf\u8072\u660e<\/h3>\n<p>\u9996\u5148\uff0c\u78ba\u4fdd\u5728\u4f7f\u7528\u8b8a\u91cf\u4e4b\u524d\u5df2\u7d93\u6b63\u78ba\u8072\u660e\u5b83\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u6b63\u78ba\u8072\u660e\u8b8a\u91cf\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>DELIMITER \/\/\nCREATE PROCEDURE example_procedure()\nBEGIN\n    DECLARE my_variable INT;  -- \u6b63\u78ba\u8072\u660e\u8b8a\u91cf\n    SET my_variable = 10;     -- \u4f7f\u7528\u8b8a\u91cf\n    SELECT my_variable;\nEND \/\/\nDELIMITER ;<\/code><\/pre>\n<h3 id=\"2-%e7%a2%ba%e8%aa%8d%e8%ae%8a%e9%87%8f%e4%bd%9c%e7%94%a8%e5%9f%9f-NWkjVzArUZ\">2. \u78ba\u8a8d\u8b8a\u91cf\u4f5c\u7528\u57df<\/h3>\n<p>\u78ba\u4fdd\u8b8a\u91cf\u5728\u6b63\u78ba\u7684\u4f5c\u7528\u57df\u5167\u4f7f\u7528\u3002\u5982\u679c\u4f60\u5728\u4e00\u500bBEGIN&#8230;END\u584a\u4e2d\u8072\u660e\u8b8a\u91cf\uff0c\u5247\u53ea\u80fd\u5728\u8a72\u584a\u5167\u4f7f\u7528\u5b83\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>DELIMITER \/\/\nCREATE PROCEDURE example_procedure()\nBEGIN\n    DECLARE my_variable INT;  -- \u5728\u6b64\u584a\u5167\u8072\u660e\n    BEGIN\n        SET my_variable = 20;  -- \u6b63\u78ba\u4f7f\u7528\n    END;\n    SELECT my_variable;  -- \u932f\u8aa4\uff1amy_variable\u5728\u6b64\u584a\u5916\u4e0d\u53ef\u7528\nEND \/\/\nDELIMITER ;<\/code><\/pre>\n<h3 id=\"3-%e6%aa%a2%e6%9f%a5%e6%8b%bc%e5%af%ab%e9%8c%af%e8%aa%a4-NWkjVzArUZ\">3. \u6aa2\u67e5\u62fc\u5beb\u932f\u8aa4<\/h3>\n<p>\u6aa2\u67e5\u8b8a\u91cf\u540d\u7a31\u7684\u62fc\u5beb\u662f\u5426\u6b63\u78ba\u3002\u62fc\u5beb\u932f\u8aa4\u6703\u5c0e\u81f4MySQL\u7121\u6cd5\u8b58\u5225\u8b8a\u91cf\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>DELIMITER \/\/\nCREATE PROCEDURE example_procedure()\nBEGIN\n    DECLARE my_variable INT;\n    SET my_varible = 30;  -- \u932f\u8aa4\uff1a\u62fc\u5beb\u932f\u8aa4\n    SELECT my_variable;\nEND \/\/\nDELIMITER ;<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-NWkjVzArUZ\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u932f\u8aa41326\uff08SQLSTATE: 42000\uff09\u901a\u5e38\u662f\u7531\u65bc\u672a\u8072\u660e\u7684\u8b8a\u91cf\u5f15\u8d77\u7684\u3002\u901a\u904e\u6aa2\u67e5\u8b8a\u91cf\u7684\u8072\u660e\u3001\u4f5c\u7528\u57df\u548c\u62fc\u5beb\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u4fee\u5fa9\u6b64\u932f\u8aa4\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u6216 <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u4e86\u89e3\u5982\u4f55\u7ba1\u7406\u548c\u4fee\u5fa9\u6578\u64da\u5eab\u932f\u8aa4\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u6574\u9ad4\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4fee\u5fa9MySQL\u932f\u8aa41326 (ER_SP_UNDECLARED_VAR) \u7684\u65b9\u6cd5\uff0c\u89e3\u6c7a\u672a\u8072\u660e\u8b8a\u91cf\u554f\u984c\uff0c\u78ba\u4fddSQL\u67e5\u8a62\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-178444","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178444","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=178444"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178444\/revisions"}],"predecessor-version":[{"id":178445,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178444\/revisions\/178445"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=178444"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=178444"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=178444"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}