{"id":178438,"date":"2024-11-08T17:58:18","date_gmt":"2024-11-08T09:58:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/178438\/"},"modified":"2024-11-08T17:58:19","modified_gmt":"2024-11-08T09:58:19","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41323-sqlstate-42000-er_sp_cursor_mismatch-%e6%9c%aa%e5%ae%9a%e7%be%a9%e7%9a%84%e6%b8%b8%e6%a8%99%ef%bc%9as","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/178438\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41323 &#8211; SQLSTATE: 42000 (ER_SP_CURSOR_MISMATCH) \u672a\u5b9a\u7fa9\u7684\u6e38\u6a19\uff1a%s"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41323-sqlstate-42000-er_sp_cursor_mismatch-%e6%9c%aa%e5%ae%9a%e7%be%a9%e7%9a%84%e6%b8%b8%e6%a8%99%ef%bc%9as-szrPfWQLIZ\">\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41323 &#8211; SQLSTATE: 42000 (ER_SP_CURSOR_MISMATCH) \u672a\u5b9a\u7fa9\u7684\u6e38\u6a19\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\u8aa41323\uff0c\u8a72\u932f\u8aa4\u7684\u4ee3\u78bc\u70baSQLSTATE: 42000\uff0c\u4e26\u986f\u793a\u70ba\u201c\u672a\u5b9a\u7fa9\u7684\u6e38\u6a19\u201d\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u8207\u5b58\u5132\u904e\u7a0b\u4e2d\u7684\u6e38\u6a19\u64cd\u4f5c\u6709\u95dc\uff0c\u7279\u5225\u662f\u5728\u4f7f\u7528\u6e38\u6a19\u6642\u672a\u6b63\u78ba\u5b9a\u7fa9\u6216\u4f7f\u7528\u6e38\u6a19\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%a41323%e7%9a%84%e5%8e%9f%e5%9b%a0-szrPfWQLIZ\">\u932f\u8aa41323\u7684\u539f\u56e0<\/h2>\n<p>\u932f\u8aa41323\u901a\u5e38\u767c\u751f\u5728\u4ee5\u4e0b\u60c5\u6cc1\uff1a<\/p>\n<ul>\n<li><strong>\u6e38\u6a19\u672a\u6b63\u78ba\u8072\u660e\uff1a<\/strong>\u5728\u4f7f\u7528\u6e38\u6a19\u4e4b\u524d\uff0c\u5fc5\u9808\u5148\u8072\u660e\u5b83\u3002\u5982\u679c\u6e38\u6a19\u672a\u88ab\u6b63\u78ba\u8072\u660e\uff0c\u5247\u5728\u5617\u8a66\u4f7f\u7528\u5b83\u6642\u6703\u5f15\u767c\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u6e38\u6a19\u672a\u6b63\u78ba\u6253\u958b\uff1a<\/strong>\u5728\u4f7f\u7528\u6e38\u6a19\u4e4b\u524d\uff0c\u5fc5\u9808\u5148\u6253\u958b\u5b83\u3002\u5982\u679c\u6e38\u6a19\u672a\u88ab\u6253\u958b\uff0c\u5247\u5728\u5617\u8a66\u8b80\u53d6\u6578\u64da\u6642\u6703\u51fa\u73fe\u932f\u8aa4\u3002<\/li>\n<li><strong>\u6e38\u6a19\u5df2\u95dc\u9589\uff1a<\/strong>\u5982\u679c\u6e38\u6a19\u5728\u4f7f\u7528\u904e\u7a0b\u4e2d\u88ab\u95dc\u9589\uff0c\u5247\u518d\u6b21\u5617\u8a66\u4f7f\u7528\u8a72\u6e38\u6a19\u6703\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u6e38\u6a19\u7bc4\u570d\u4e0d\u6b63\u78ba\uff1a<\/strong>\u5982\u679c\u6e38\u6a19\u7684\u7bc4\u570d\u4e0d\u6b63\u78ba\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u7121\u6cd5\u6b63\u78ba\u8a2a\u554f\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9%e9%8c%af%e8%aa%a41323-szrPfWQLIZ\">\u5982\u4f55\u4fee\u5fa9\u932f\u8aa41323<\/h2>\n<p>\u8981\u4fee\u5fa9MySQL\u932f\u8aa41323\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u9075\u5faa\u4ee5\u4e0b\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e7%a2%ba%e8%aa%8d%e6%b8%b8%e6%a8%99%e7%9a%84%e8%81%b2%e6%98%8e-szrPfWQLIZ\">1. \u78ba\u8a8d\u6e38\u6a19\u7684\u8072\u660e<\/h3>\n<pre><code>\nDECLARE cursor_name CURSOR FOR SELECT column_name FROM table_name;\n<\/code><\/pre>\n<p>\u78ba\u4fdd\u5728\u4f7f\u7528\u6e38\u6a19\u4e4b\u524d\uff0c\u5df2\u6b63\u78ba\u8072\u660e\u6e38\u6a19\u3002\u8072\u660e\u6e38\u6a19\u7684\u8a9e\u6cd5\u5982\u4e0a\u6240\u793a\u3002<\/p>\n<h3 id=\"2-%e7%a2%ba%e4%bf%9d%e6%b8%b8%e6%a8%99%e5%b7%b2%e6%89%93%e9%96%8b-szrPfWQLIZ\">2. \u78ba\u4fdd\u6e38\u6a19\u5df2\u6253\u958b<\/h3>\n<pre><code>\nOPEN cursor_name;\n<\/code><\/pre>\n<p>\u5728\u4f7f\u7528\u6e38\u6a19\u4e4b\u524d\uff0c\u5fc5\u9808\u5148\u6253\u958b\u5b83\u3002\u4f7f\u7528\u4e0a\u8ff0\u8a9e\u6cd5\u4f86\u6253\u958b\u6e38\u6a19\u3002<\/p>\n<h3 id=\"3-%e6%aa%a2%e6%9f%a5%e6%b8%b8%e6%a8%99%e7%9a%84%e7%8b%80%e6%85%8b-szrPfWQLIZ\">3. \u6aa2\u67e5\u6e38\u6a19\u7684\u72c0\u614b<\/h3>\n<p>\u5728\u4f7f\u7528\u6e38\u6a19\u4e4b\u524d\uff0c\u6aa2\u67e5\u6e38\u6a19\u662f\u5426\u5df2\u95dc\u9589\u3002\u5982\u679c\u6e38\u6a19\u5df2\u95dc\u9589\uff0c\u5247\u9700\u8981\u91cd\u65b0\u6253\u958b\u5b83\u3002<\/p>\n<pre><code>\nIF NOT cursor_is_open THEN\n    OPEN cursor_name;\nEND IF;\n<\/code><\/pre>\n<h3 id=\"4-%e6%ad%a3%e7%a2%ba%e8%99%95%e7%90%86%e6%b8%b8%e6%a8%99%e7%9a%84%e9%97%9c%e9%96%89-szrPfWQLIZ\">4. \u6b63\u78ba\u8655\u7406\u6e38\u6a19\u7684\u95dc\u9589<\/h3>\n<p>\u5728\u5b8c\u6210\u6e38\u6a19\u64cd\u4f5c\u5f8c\uff0c\u61c9\u8a72\u6b63\u78ba\u95dc\u9589\u6e38\u6a19\uff0c\u4ee5\u91cb\u653e\u8cc7\u6e90\u3002\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u6cd5\u4f86\u95dc\u9589\u6e38\u6a19\uff1a<\/p>\n<pre><code>\nCLOSE cursor_name;\n<\/code><\/pre>\n<h3 id=\"5-%e6%b8%ac%e8%a9%a6%e5%92%8c%e8%aa%bf%e8%a9%a6-szrPfWQLIZ\">5. \u6e2c\u8a66\u548c\u8abf\u8a66<\/h3>\n<p>\u5728\u4fee\u5fa9\u932f\u8aa4\u5f8c\uff0c\u9032\u884c\u6e2c\u8a66\u4ee5\u78ba\u4fdd\u554f\u984c\u5df2\u89e3\u6c7a\u3002\u53ef\u4ee5\u4f7f\u7528\u7c21\u55ae\u7684\u67e5\u8a62\u4f86\u6aa2\u67e5\u6e38\u6a19\u7684\u884c\u70ba\uff0c\u4e26\u78ba\u4fdd\u4e0d\u518d\u51fa\u73fe\u932f\u8aa41323\u3002<\/p>\n<h2 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-szrPfWQLIZ\">\u793a\u4f8b\u4ee3\u78bc<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u5b8c\u6574\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u6b63\u78ba\u4f7f\u7528\u6e38\u6a19\uff1a<\/p>\n<pre><code>\nDELIMITER \/\/\n\nCREATE PROCEDURE example_procedure()\nBEGIN\n    DECLARE done INT DEFAULT FALSE;\n    DECLARE cursor_name CURSOR FOR SELECT column_name FROM table_name;\n    DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;\n\n    OPEN cursor_name;\n\n    read_loop: LOOP\n        FETCH cursor_name INTO variable_name;\n        IF done THEN\n            LEAVE read_loop;\n        END IF;\n        -- \u5728\u9019\u88e1\u8655\u7406\u6578\u64da\n    END LOOP;\n\n    CLOSE cursor_name;\nEND \/\/\n\nDELIMITER ;\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-szrPfWQLIZ\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u932f\u8aa41323\uff08SQLSTATE: 42000\uff09\u901a\u5e38\u8207\u6e38\u6a19\u7684\u4f7f\u7528\u4e0d\u7576\u6709\u95dc\u3002\u901a\u904e\u6b63\u78ba\u8072\u660e\u3001\u6253\u958b\u548c\u95dc\u9589\u6e38\u6a19\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u907f\u514d\u6b64\u932f\u8aa4\u3002\u4e86\u89e3\u6e38\u6a19\u7684\u5de5\u4f5c\u539f\u7406\u548c\u6b63\u78ba\u7684\u4f7f\u7528\u65b9\u6cd5\u662f\u89e3\u6c7a\u6b64\u554f\u984c\u7684\u95dc\u9375\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4fee\u5fa9MySQL\u932f\u8aa41323 (ER_SP_CURSOR_MISMATCH) \u7684\u65b9\u6cd5\uff0c\u89e3\u6c7a\u672a\u5b9a\u7fa9\u6e38\u6a19\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-178438","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178438","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=178438"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178438\/revisions"}],"predecessor-version":[{"id":178439,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178438\/revisions\/178439"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=178438"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=178438"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=178438"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}