{"id":178432,"date":"2024-11-08T17:55:30","date_gmt":"2024-11-08T09:55:30","guid":{"rendered":"https:\/\/server.hk\/cnblog\/178432\/"},"modified":"2024-11-08T17:55:31","modified_gmt":"2024-11-08T09:55:31","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41319-sqlstate-42000-er_sp_noreturn-%e5%87%bd%e6%95%b8s%e4%b8%ad%e6%89%be%e4%b8%8d%e5%88%b0return","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/178432\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41319 &#8211; SQLSTATE: 42000 (ER_SP_NORETURN) \u51fd\u6578%s\u4e2d\u627e\u4e0d\u5230RETURN"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41319-sqlstate-42000-er_sp_noreturn-%e5%87%bd%e6%95%b8s%e4%b8%ad%e6%89%be%e4%b8%8d%e5%88%b0return-WgAtgWFQPu\">\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41319 &#8211; SQLSTATE: 42000 (ER_SP_NORETURN) \u51fd\u6578%s\u4e2d\u627e\u4e0d\u5230RETURN<\/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\u8aa41319\uff0c\u8a72\u932f\u8aa4\u7684\u5177\u9ad4\u4fe1\u606f\u70ba\u201cSQLSTATE: 42000 (ER_SP_NORETURN) \u51fd\u6578%s\u4e2d\u627e\u4e0d\u5230RETURN\u201d\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u51fa\u73fe\u5728\u5b58\u5132\u904e\u7a0b\u6216\u51fd\u6578\u4e2d\uff0c\u7576MySQL\u9810\u671f\u4e00\u500bRETURN\u8a9e\u53e5\u537b\u672a\u80fd\u627e\u5230\u6642\uff0c\u5c31\u6703\u5f15\u767c\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%e5%88%86%e6%9e%90-WgAtgWFQPu\">\u932f\u8aa4\u539f\u56e0\u5206\u6790<\/h2>\n<p>MySQL\u4e2d\u7684\u5b58\u5132\u904e\u7a0b\u548c\u51fd\u6578\u662f\u7528\u4f86\u57f7\u884c\u4e00\u7cfb\u5217SQL\u8a9e\u53e5\u7684\u7a0b\u5e8f\u55ae\u5143\u3002\u7576\u4f60\u5275\u5efa\u4e00\u500b\u51fd\u6578\u6642\uff0c\u5fc5\u9808\u78ba\u4fdd\u5b83\u8fd4\u56de\u4e00\u500b\u503c\u3002\u5982\u679c\u5728\u51fd\u6578\u7684\u5b9a\u7fa9\u4e2d\u6c92\u6709\u5305\u542bRETURN\u8a9e\u53e5\uff0cMySQL\u5c07\u7121\u6cd5\u6b63\u78ba\u57f7\u884c\u8a72\u51fd\u6578\uff0c\u5f9e\u800c\u5f15\u767c\u932f\u8aa41319\u3002<\/p>\n<ul>\n<li><strong>\u7f3a\u5c11RETURN\u8a9e\u53e5\uff1a<\/strong>\u9019\u662f\u6700\u5e38\u898b\u7684\u539f\u56e0\u3002\u5982\u679c\u51fd\u6578\u7684\u908f\u8f2f\u9700\u8981\u8fd4\u56de\u4e00\u500b\u503c\uff0c\u4f46\u537b\u6c92\u6709\u660e\u78ba\u7684RETURN\u8a9e\u53e5\uff0c\u5247\u6703\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u689d\u4ef6\u8a9e\u53e5\u672a\u6db5\u84cb\u6240\u6709\u60c5\u6cc1\uff1a<\/strong>\u5982\u679c\u51fd\u6578\u4e2d\u6709\u689d\u4ef6\u8a9e\u53e5\uff08\u5982IF\u6216CASE\uff09\uff0c\u800c\u9019\u4e9b\u689d\u4ef6\u672a\u6db5\u84cb\u6240\u6709\u53ef\u80fd\u7684\u60c5\u6cc1\uff0c\u5247\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u53ef\u80fd\u4e0d\u6703\u57f7\u884cRETURN\u8a9e\u53e5\u3002<\/li>\n<li><strong>\u8a9e\u6cd5\u932f\u8aa4\uff1a<\/strong>\u5728\u51fd\u6578\u7684\u5b9a\u7fa9\u4e2d\uff0c\u5982\u679c\u5b58\u5728\u8a9e\u6cd5\u932f\u8aa4\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4MySQL\u7121\u6cd5\u6b63\u78ba\u89e3\u6790RETURN\u8a9e\u53e5\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88-WgAtgWFQPu\">\u89e3\u6c7a\u65b9\u6848<\/h2>\n<p>\u8981\u4fee\u5fa9MySQL\u932f\u8aa41319\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u63a1\u53d6\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e5%87%bd%e6%95%b8%e5%ae%9a%e7%be%a9-WgAtgWFQPu\">1. \u6aa2\u67e5\u51fd\u6578\u5b9a\u7fa9<\/h3>\n<pre><code>DELIMITER \/\/\nCREATE FUNCTION example_function(param INT) RETURNS INT\nBEGIN\n    DECLARE result INT;\n    SET result = param * 2;\n    -- \u78ba\u4fdd\u6709RETURN\u8a9e\u53e5\n    RETURN result; \nEND \/\/\nDELIMITER ;\n<\/code><\/pre>\n<p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u51fd\u6578`example_function`\u6b63\u78ba\u5730\u5305\u542b\u4e86\u4e00\u500bRETURN\u8a9e\u53e5\uff0c\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u932f\u8aa41319\u7684\u767c\u751f\u3002<\/p>\n<h3 id=\"2-%e7%a2%ba%e4%bf%9d%e6%89%80%e6%9c%89%e6%a2%9d%e4%bb%b6%e9%83%bd%e6%9c%89return%e8%aa%9e%e5%8f%a5-WgAtgWFQPu\">2. \u78ba\u4fdd\u6240\u6709\u689d\u4ef6\u90fd\u6709RETURN\u8a9e\u53e5<\/h3>\n<p>\u5982\u679c\u51fd\u6578\u4e2d\u4f7f\u7528\u4e86\u689d\u4ef6\u8a9e\u53e5\uff0c\u8acb\u78ba\u4fdd\u6bcf\u500b\u53ef\u80fd\u7684\u8def\u5f91\u90fd\u6709RETURN\u8a9e\u53e5\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>DELIMITER \/\/\nCREATE FUNCTION conditional_function(param INT) RETURNS INT\nBEGIN\n    IF param &gt; 0 THEN\n        RETURN 1;\n    ELSEIF param &lt; 0 THEN\n        RETURN -1;\n    END IF;\n    -- \u78ba\u4fdd\u6709RETURN\u8a9e\u53e5\n    RETURN 0; \nEND \/\/\nDELIMITER ;\n<\/code><\/pre>\n<h3 id=\"3-%e6%aa%a2%e6%9f%a5%e8%aa%9e%e6%b3%95%e9%8c%af%e8%aa%a4-WgAtgWFQPu\">3. \u6aa2\u67e5\u8a9e\u6cd5\u932f\u8aa4<\/h3>\n<p>\u4ed4\u7d30\u6aa2\u67e5\u51fd\u6578\u7684\u8a9e\u6cd5\uff0c\u78ba\u4fdd\u6c92\u6709\u62fc\u5beb\u932f\u8aa4\u6216\u8a9e\u6cd5\u932f\u8aa4\u3002\u4f7f\u7528MySQL\u7684\u8a9e\u6cd5\u6aa2\u67e5\u5de5\u5177\u53ef\u4ee5\u5e6b\u52a9\u8b58\u5225\u554f\u984c\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-WgAtgWFQPu\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u932f\u8aa41319\u901a\u5e38\u662f\u7531\u65bc\u51fd\u6578\u4e2d\u7f3a\u5c11RETURN\u8a9e\u53e5\u6216\u689d\u4ef6\u672a\u6db5\u84cb\u6240\u6709\u60c5\u6cc1\u6240\u5f15\u8d77\u7684\u3002\u901a\u904e\u4ed4\u7d30\u6aa2\u67e5\u51fd\u6578\u7684\u5b9a\u7fa9\u3001\u78ba\u4fdd\u6240\u6709\u689d\u4ef6\u90fd\u6709RETURN\u8a9e\u53e5\u4ee5\u53ca\u6aa2\u67e5\u8a9e\u6cd5\u932f\u8aa4\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\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a>\u53ef\u4ee5\u63d0\u4f9b\u66f4\u597d\u7684\u6027\u80fd\u548c\u53ef\u9760\u6027\uff0c\u5f9e\u800c\u6e1b\u5c11\u6b64\u985e\u554f\u984c\u7684\u767c\u751f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4fee\u5fa9MySQL\u932f\u8aa41319 (ER_SP_NORETURN) \u7684\u65b9\u6cd5\uff0c\u89e3\u6c7a\u51fd\u6578\u4e2d\u7f3a\u5c11RETURN\u8a9e\u53e5\u7684\u554f\u984c\uff0c\u78ba\u4fdd\u6b63\u78ba\u57f7\u884c\u5b58\u5132\u904e\u7a0b\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-178432","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178432","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=178432"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178432\/revisions"}],"predecessor-version":[{"id":178433,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178432\/revisions\/178433"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=178432"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=178432"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=178432"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}