{"id":178446,"date":"2024-11-08T18:02:22","date_gmt":"2024-11-08T10:02:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/178446\/"},"modified":"2024-11-08T18:02:23","modified_gmt":"2024-11-08T10:02:23","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41327-sqlstate-hy000-er_sp_wrong_no_of_fetch_args-fetch%e8%ae%8a%e9%87%8f%e6%95%b8%e9%87%8f%e4%b8%8d%e6%ad%a3%e7%a2%ba","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/178446\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41327 &#8211; SQLSTATE: HY000 (ER_SP_WRONG_NO_OF_FETCH_ARGS) FETCH\u8b8a\u91cf\u6578\u91cf\u4e0d\u6b63\u78ba"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41327-sqlstate-hy000-er_sp_wrong_no_of_fetch_args-fetch%e8%ae%8a%e9%87%8f%e6%95%b8%e9%87%8f%e4%b8%8d%e6%ad%a3%e7%a2%ba-WblvnTQVyp\">\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41327 &#8211; SQLSTATE: HY000 (ER_SP_WRONG_NO_OF_FETCH_ARGS) FETCH\u8b8a\u91cf\u6578\u91cf\u4e0d\u6b63\u78ba<\/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\u8aa41327\uff0c\u8a72\u932f\u8aa4\u7684\u4ee3\u78bc\u70baSQLSTATE: HY000\uff0c\u4e26\u4e14\u986f\u793a\u70ba\u201cER_SP_WRONG_NO_OF_FETCH_ARGS\u201d\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u767c\u751f\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\uff0c\u7576FETCH\u8a9e\u53e5\u7684\u8b8a\u91cf\u6578\u91cf\u8207SELECT\u8a9e\u53e5\u7684\u5217\u6578\u4e0d\u5339\u914d\u6642\uff0c\u5c31\u6703\u51fa\u73fe\u9019\u500b\u554f\u984c\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%a4%e5%8e%9f%e5%9b%a0%e5%88%86%e6%9e%90-WblvnTQVyp\">\u932f\u8aa4\u539f\u56e0\u5206\u6790<\/h2>\n<p>\u932f\u8aa41327\u7684\u4e3b\u8981\u539f\u56e0\u662f\u5b58\u5132\u904e\u7a0b\u4e2d\u7684FETCH\u8a9e\u53e5\u6240\u9700\u7684\u8b8a\u91cf\u6578\u91cf\u8207SELECT\u67e5\u8a62\u8fd4\u56de\u7684\u5217\u6578\u4e0d\u4e00\u81f4\u3002\u9019\u901a\u5e38\u767c\u751f\u5728\u4ee5\u4e0b\u60c5\u6cc1\uff1a<\/p>\n<ul>\n<li>\u5728FETCH\u8a9e\u53e5\u4e2d\u6307\u5b9a\u7684\u8b8a\u91cf\u6578\u91cf\u5c11\u65bcSELECT\u67e5\u8a62\u8fd4\u56de\u7684\u5217\u6578\u3002<\/li>\n<li>\u5728FETCH\u8a9e\u53e5\u4e2d\u6307\u5b9a\u7684\u8b8a\u91cf\u6578\u91cf\u591a\u65bcSELECT\u67e5\u8a62\u8fd4\u56de\u7684\u5217\u6578\u3002<\/li>\n<li>\u5728\u5b58\u5132\u904e\u7a0b\u4e2d\uff0c\u5c0d\u65bc\u67d0\u4e9b\u689d\u4ef6\uff0cSELECT\u67e5\u8a62\u53ef\u80fd\u8fd4\u56de\u4e0d\u540c\u7684\u5217\u6578\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u8003\u616e\u4ee5\u4e0b\u5b58\u5132\u904e\u7a0b\uff1a<\/p>\n<pre><code>CREATE PROCEDURE GetUserInfo(IN userId INT)\nBEGIN\n    DECLARE userName VARCHAR(50);\n    DECLARE userEmail VARCHAR(100);\n    \n    DECLARE cur CURSOR FOR \n        SELECT name, email FROM users WHERE id = userId;\n    \n    OPEN cur;\n    FETCH cur INTO userName; -- \u9019\u88e1\u6703\u5c0e\u81f4\u932f\u8aa41327\n    CLOSE cur;\nEND;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0cFETCH\u8a9e\u53e5\u53ea\u6307\u5b9a\u4e86\u4e00\u500b\u8b8a\u91cf\uff08userName\uff09\uff0c\u4f46SELECT\u67e5\u8a62\u8fd4\u56de\u4e86\u5169\u500b\u5217\uff08name\u548cemail\uff09\uff0c\u56e0\u6b64\u6703\u5f15\u767c\u932f\u8aa41327\u3002<\/p>\n<h2 id=\"%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88-WblvnTQVyp\">\u89e3\u6c7a\u65b9\u6848<\/h2>\n<p>\u8981\u4fee\u5fa9\u9019\u500b\u932f\u8aa4\uff0c\u958b\u767c\u8005\u9700\u8981\u78ba\u4fddFETCH\u8a9e\u53e5\u4e2d\u7684\u8b8a\u91cf\u6578\u91cf\u8207SELECT\u67e5\u8a62\u8fd4\u56de\u7684\u5217\u6578\u5b8c\u5168\u5339\u914d\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u89e3\u6c7a\u65b9\u6848\uff1a<\/p>\n<h3 id=\"1-%e8%aa%bf%e6%95%b4fetch%e8%aa%9e%e5%8f%a5%e7%9a%84%e8%ae%8a%e9%87%8f%e6%95%b8%e9%87%8f-WblvnTQVyp\">1. \u8abf\u6574FETCH\u8a9e\u53e5\u7684\u8b8a\u91cf\u6578\u91cf<\/h3>\n<p>\u78ba\u4fddFETCH\u8a9e\u53e5\u4e2d\u7684\u8b8a\u91cf\u6578\u91cf\u8207SELECT\u67e5\u8a62\u8fd4\u56de\u7684\u5217\u6578\u4e00\u81f4\u3002\u4f8b\u5982\uff0c\u4fee\u6539\u4e0a\u9762\u7684\u5b58\u5132\u904e\u7a0b\uff1a<\/p>\n<pre><code>CREATE PROCEDURE GetUserInfo(IN userId INT)\nBEGIN\n    DECLARE userName VARCHAR(50);\n    DECLARE userEmail VARCHAR(100);\n    \n    DECLARE cur CURSOR FOR \n        SELECT name, email FROM users WHERE id = userId;\n    \n    OPEN cur;\n    FETCH cur INTO userName, userEmail; -- \u73fe\u5728\u8b8a\u91cf\u6578\u91cf\u5339\u914d\n    CLOSE cur;\nEND;<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e6%a2%9d%e4%bb%b6%e8%aa%9e%e5%8f%a5-WblvnTQVyp\">2. \u4f7f\u7528\u689d\u4ef6\u8a9e\u53e5<\/h3>\n<p>\u5982\u679c\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0cSELECT\u67e5\u8a62\u53ef\u80fd\u8fd4\u56de\u4e0d\u540c\u7684\u5217\u6578\uff0c\u53ef\u4ee5\u4f7f\u7528\u689d\u4ef6\u8a9e\u53e5\u4f86\u8655\u7406\u9019\u7a2e\u60c5\u6cc1\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>CREATE PROCEDURE GetUserInfo(IN userId INT)\nBEGIN\n    DECLARE userName VARCHAR(50);\n    DECLARE userEmail VARCHAR(100);\n    \n    DECLARE cur CURSOR FOR \n        SELECT name, email FROM users WHERE id = userId;\n    \n    OPEN cur;\n    \n    -- \u4f7f\u7528\u689d\u4ef6\u8a9e\u53e5\u4f86\u78ba\u4fddFETCH\u7684\u8b8a\u91cf\u6578\u91cf\u6b63\u78ba\n    IF (SELECT COUNT(*) FROM users WHERE id = userId) &gt; 0 THEN\n        FETCH cur INTO userName, userEmail;\n    END IF;\n    \n    CLOSE cur;\nEND;<\/code><\/pre>\n<h3 id=\"3-%e6%aa%a2%e6%9f%a5%e5%ad%98%e5%84%b2%e9%81%8e%e7%a8%8b%e7%9a%84%e9%82%8f%e8%bc%af-WblvnTQVyp\">3. \u6aa2\u67e5\u5b58\u5132\u904e\u7a0b\u7684\u908f\u8f2f<\/h3>\n<p>\u78ba\u4fdd\u5b58\u5132\u904e\u7a0b\u7684\u908f\u8f2f\u6b63\u78ba\uff0c\u4e26\u4e14\u5728\u4e0d\u540c\u7684\u60c5\u6cc1\u4e0b\uff0cSELECT\u67e5\u8a62\u8fd4\u56de\u7684\u5217\u6578\u4e0d\u6703\u6539\u8b8a\u3002\u5982\u679c\u6709\u5fc5\u8981\uff0c\u53ef\u4ee5\u8003\u616e\u91cd\u69cb\u5b58\u5132\u904e\u7a0b\u4ee5\u907f\u514d\u9019\u7a2e\u60c5\u6cc1\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-WblvnTQVyp\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u932f\u8aa41327 &#8211; SQLSTATE: HY000 (ER_SP_WRONG_NO_OF_FETCH_ARGS) \u662f\u7531\u65bcFETCH\u8a9e\u53e5\u7684\u8b8a\u91cf\u6578\u91cf\u8207SELECT\u67e5\u8a62\u8fd4\u56de\u7684\u5217\u6578\u4e0d\u5339\u914d\u6240\u5f15\u8d77\u7684\u3002\u901a\u904e\u8abf\u6574FETCH\u8a9e\u53e5\u7684\u8b8a\u91cf\u6578\u91cf\u3001\u4f7f\u7528\u689d\u4ef6\u8a9e\u53e5\u4ee5\u53ca\u6aa2\u67e5\u5b58\u5132\u904e\u7a0b\u7684\u908f\u8f2f\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u500b\u554f\u984c\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\u53ef\u4ee5\u63d0\u4f9b\u66f4\u597d\u7684\u6027\u80fd\u548c\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4fee\u5fa9MySQL\u932f\u8aa41327 (SQLSTATE: HY000) \u7684\u6307\u5357\uff0c\u89e3\u6c7aFETCH\u8b8a\u91cf\u6578\u91cf\u4e0d\u6b63\u78ba\u7684\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-178446","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178446","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=178446"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178446\/revisions"}],"predecessor-version":[{"id":178447,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178446\/revisions\/178447"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=178446"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=178446"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=178446"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}