{"id":178436,"date":"2024-11-08T17:57:24","date_gmt":"2024-11-08T09:57:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/178436\/"},"modified":"2024-11-08T17:57:25","modified_gmt":"2024-11-08T09:57:25","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41321-sqlstate-42000er_sp_bad_cursor_query-%e6%b8%b8%e6%a8%99%e8%aa%9e%e5%8f%a5%e5%bf%85%e9%a0%88%e6%98%afselect","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/178436\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41321 &#8211; SQLSTATE: 42000(ER_SP_BAD_CURSOR_QUERY) \u6e38\u6a19\u8a9e\u53e5\u5fc5\u9808\u662fSELECT"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41321-sqlstate-42000er_sp_bad_cursor_query-%e6%b8%b8%e6%a8%99%e8%aa%9e%e5%8f%a5%e5%bf%85%e9%a0%88%e6%98%afselect-uQqpxPsUei\">\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41321 &#8211; SQLSTATE: 42000(ER_SP_BAD_CURSOR_QUERY) \u6e38\u6a19\u8a9e\u53e5\u5fc5\u9808\u662fSELECT<\/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\u8aa41321\uff0c\u8a72\u932f\u8aa4\u7684SQLSTATE\u4ee3\u78bc\u70ba42000\uff0c\u8868\u793a\u201c\u6e38\u6a19\u8a9e\u53e5\u5fc5\u9808\u662fSELECT\u201d\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u767c\u751f\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\u4f7f\u7528\u6e38\u6a19\u6642\uff0c\u7576\u6e38\u6a19\u7684\u67e5\u8a62\u8a9e\u53e5\u4e0d\u662fSELECT\u985e\u578b\u6642\uff0c\u5c31\u6703\u5f15\u767c\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%a41321%e7%9a%84%e5%8e%9f%e5%9b%a0-uQqpxPsUei\">\u932f\u8aa41321\u7684\u539f\u56e0<\/h2>\n<p>\u932f\u8aa41321\u7684\u4e3b\u8981\u539f\u56e0\u662f\u958b\u767c\u8005\u5728\u5b9a\u7fa9\u6e38\u6a19\u6642\uff0c\u4f7f\u7528\u4e86\u975eSELECT\u8a9e\u53e5\u3002\u6839\u64daMySQL\u7684\u898f\u5b9a\uff0c\u6e38\u6a19\u5fc5\u9808\u57fa\u65bcSELECT\u67e5\u8a62\u4f86\u9032\u884c\u6578\u64da\u7684\u904d\u6b77\u548c\u64cd\u4f5c\u3002\u7576\u958b\u767c\u8005\u5617\u8a66\u4f7f\u7528INSERT\u3001UPDATE\u6216DELETE\u7b49\u8a9e\u53e5\u4f86\u5b9a\u7fa9\u6e38\u6a19\u6642\uff0c\u5c31\u6703\u51fa\u73fe\u6b64\u932f\u8aa4\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b-uQqpxPsUei\">\u793a\u4f8b<\/h3>\n<pre><code>DELIMITER \/\/\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    -- \u932f\u8aa4\u7684\u6e38\u6a19\u5b9a\u7fa9\n    DECLARE cursor_name2 CURSOR FOR INSERT INTO table_name (column_name) VALUES ('value'); \n    CLOSE cursor_name;\nEND \/\/\nDELIMITER ;\n<\/code><\/pre>\n<p>\u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c\u7b2c\u4e8c\u500b\u6e38\u6a19\u7684\u5b9a\u7fa9\u4f7f\u7528\u4e86INSERT\u8a9e\u53e5\uff0c\u9019\u6703\u5c0e\u81f4\u932f\u8aa41321\u7684\u767c\u751f\u3002<\/p>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9%e9%8c%af%e8%aa%a41321-uQqpxPsUei\">\u5982\u4f55\u4fee\u5fa9\u932f\u8aa41321<\/h2>\n<p>\u8981\u4fee\u5fa9\u932f\u8aa41321\uff0c\u958b\u767c\u8005\u9700\u8981\u78ba\u4fdd\u6240\u6709\u6e38\u6a19\u7684\u5b9a\u7fa9\u90fd\u662f\u57fa\u65bcSELECT\u67e5\u8a62\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6b65\u9a5f\u548c\u5efa\u8b70\uff1a<\/p>\n<h3 id=\"%e6%ad%a5%e9%a9%9f1%ef%bc%9a%e6%aa%a2%e6%9f%a5%e6%b8%b8%e6%a8%99%e5%ae%9a%e7%be%a9-uQqpxPsUei\">\u6b65\u9a5f1\uff1a\u6aa2\u67e5\u6e38\u6a19\u5b9a\u7fa9<\/h3>\n<p>\u9996\u5148\uff0c\u6aa2\u67e5\u5b58\u5132\u904e\u7a0b\u4e2d\u6240\u6709\u6e38\u6a19\u7684\u5b9a\u7fa9\uff0c\u78ba\u4fdd\u5b83\u5011\u90fd\u662f\u57fa\u65bcSELECT\u8a9e\u53e5\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>DECLARE cursor_name CURSOR FOR SELECT column_name FROM table_name;\n<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f2%ef%bc%9a%e4%bd%bf%e7%94%a8%e6%ad%a3%e7%a2%ba%e7%9a%84%e6%9f%a5%e8%a9%a2-uQqpxPsUei\">\u6b65\u9a5f2\uff1a\u4f7f\u7528\u6b63\u78ba\u7684\u67e5\u8a62<\/h3>\n<p>\u5982\u679c\u9700\u8981\u5728\u6e38\u6a19\u4e2d\u4f7f\u7528\u5176\u4ed6\u985e\u578b\u7684SQL\u8a9e\u53e5\uff0c\u8003\u616e\u5c07\u9019\u4e9b\u64cd\u4f5c\u79fb\u5230\u6e38\u6a19\u7684\u5faa\u74b0\u4e4b\u5916\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u5148\u4f7f\u7528SELECT\u8a9e\u53e5\u7372\u53d6\u6240\u9700\u7684\u6578\u64da\uff0c\u7136\u5f8c\u5728\u6e38\u6a19\u5faa\u74b0\u4e2d\u9032\u884c\u5176\u4ed6\u64cd\u4f5c\uff1a<\/p>\n<pre><code>OPEN cursor_name;\nFETCH cursor_name INTO variable_name;\n\n-- \u5728\u9019\u88e1\u9032\u884c\u5176\u4ed6\u64cd\u4f5c\uff0c\u4f8b\u5982INSERT\u6216UPDATE\nINSERT INTO another_table (column_name) VALUES (variable_name);\nCLOSE cursor_name;\n<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f3%ef%bc%9a%e6%b8%ac%e8%a9%a6%e5%92%8c%e9%a9%97%e8%ad%89-uQqpxPsUei\">\u6b65\u9a5f3\uff1a\u6e2c\u8a66\u548c\u9a57\u8b49<\/h3>\n<p>\u5728\u4fee\u5fa9\u6e38\u6a19\u5b9a\u7fa9\u5f8c\uff0c\u9032\u884c\u6e2c\u8a66\u4ee5\u78ba\u4fdd\u5b58\u5132\u904e\u7a0b\u80fd\u5920\u6b63\u5e38\u904b\u884c\uff0c\u4e26\u4e14\u4e0d\u518d\u51fa\u73fe\u932f\u8aa41321\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u8abf\u7528\u5b58\u5132\u904e\u7a0b\uff1a<\/p>\n<pre><code>CALL example_procedure();\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-uQqpxPsUei\">\u7e3d\u7d50<\/h2>\n<p>\u932f\u8aa41321 &#8211; SQLSTATE: 42000(ER_SP_BAD_CURSOR_QUERY) \u662f\u4e00\u500b\u5e38\u898b\u7684MySQL\u932f\u8aa4\uff0c\u901a\u5e38\u7531\u65bc\u6e38\u6a19\u5b9a\u7fa9\u4e0d\u6b63\u78ba\u800c\u5f15\u8d77\u3002\u901a\u904e\u78ba\u4fdd\u6240\u6709\u6e38\u6a19\u90fd\u662f\u57fa\u65bcSELECT\u67e5\u8a62\uff0c\u4e26\u5c07\u5176\u4ed6SQL\u64cd\u4f5c\u79fb\u5230\u6e38\u6a19\u5faa\u74b0\u4e4b\u5916\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u4fee\u5fa9\u6b64\u932f\u8aa4\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u958b\u767c\u8005\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u670d\u52d9\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4fee\u5fa9MySQL\u932f\u8aa41321\u7684\u65b9\u6cd5\uff0c\u89e3\u91cb\u5982\u4f55\u8655\u7406\u6e38\u6a19\u8a9e\u53e5\u5fc5\u9808\u70baSELECT\u7684\u554f\u984c\uff0c\u78ba\u4fddSQL\u67e5\u8a62\u6b63\u78ba\u57f7\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-178436","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178436","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=178436"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178436\/revisions"}],"predecessor-version":[{"id":178437,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178436\/revisions\/178437"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=178436"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=178436"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=178436"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}