{"id":178824,"date":"2024-11-08T21:12:19","date_gmt":"2024-11-08T13:12:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/178824\/"},"modified":"2024-11-08T21:12:19","modified_gmt":"2024-11-08T13:12:19","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9postgresql%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc%ef%bc%9a24000-invalid_cursor_state%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/178824\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc\uff1a24000 &#8211; invalid_cursor_state\uff1f"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9postgresql%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc%ef%bc%9a24000-invalid_cursor_state%ef%bc%9f-WgxKvIaGqH\">\u5982\u4f55\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc\uff1a24000 &#8211; invalid_cursor_state\uff1f<\/h1>\n<p>\u5728\u4f7f\u7528PostgreSQL\u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\u4ee3\u78bc\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u932f\u8aa4\u4ee3\u78bc24000\uff0c\u8868\u793a\u201cinvalid_cursor_state\u201d\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u767c\u751f\u5728\u4f7f\u7528\u6e38\u6a19\u6642\uff0c\u7576\u6e38\u6a19\u7684\u72c0\u614b\u4e0d\u6b63\u78ba\u6216\u4e0d\u7b26\u5408\u9810\u671f\u6642\uff0c\u5c31\u6703\u51fa\u73fe\u6b64\u932f\u8aa4\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u6b64\u932f\u8aa4\u7684\u539f\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc24000%e7%9a%84%e5%8e%9f%e5%9b%a0-WgxKvIaGqH\">\u932f\u8aa4\u4ee3\u78bc24000\u7684\u539f\u56e0<\/h2>\n<p>PostgreSQL\u4e2d\u7684\u6e38\u6a19\u662f\u4e00\u7a2e\u7528\u65bc\u904d\u6b77\u67e5\u8a62\u7d50\u679c\u7684\u6578\u64da\u7d50\u69cb\u3002\u7576\u4f60\u5617\u8a66\u5728\u6e38\u6a19\u4e0a\u57f7\u884c\u67d0\u4e9b\u64cd\u4f5c\u6642\uff0c\u5982\u679c\u6e38\u6a19\u7684\u72c0\u614b\u4e0d\u6b63\u78ba\uff0c\u5c31\u6703\u5f15\u767c\u932f\u8aa424000\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u539f\u56e0\uff1a<\/p>\n<ul>\n<li><strong>\u6e38\u6a19\u672a\u6b63\u78ba\u6253\u958b\uff1a<\/strong>\u5728\u4f7f\u7528\u6e38\u6a19\u4e4b\u524d\uff0c\u5fc5\u9808\u5148\u4f7f\u7528DECLARE\u8a9e\u53e5\u4f86\u8072\u660e\u4e26\u6253\u958b\u6e38\u6a19\u3002\u5982\u679c\u6e38\u6a19\u672a\u6b63\u78ba\u6253\u958b\uff0c\u4efb\u4f55\u5f8c\u7e8c\u64cd\u4f5c\u90fd\u6703\u5c0e\u81f4\u6b64\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\u5f15\u767c\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u6e38\u6a19\u5df2\u7d93\u88ab\u79fb\u52d5\u5230\u7d50\u675f\u4f4d\u7f6e\uff1a<\/strong>\u7576\u6e38\u6a19\u5df2\u7d93\u904d\u6b77\u5230\u7d50\u679c\u96c6\u7684\u672b\u5c3e\uff0c\u4e26\u4e14\u5617\u8a66\u518d\u6b21\u8b80\u53d6\u6578\u64da\u6642\uff0c\u4e5f\u6703\u51fa\u73fe\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u6e38\u6a19\u7684\u4f5c\u7528\u57df\u554f\u984c\uff1a<\/strong>\u5982\u679c\u6e38\u6a19\u5728\u4e00\u500b\u4e8b\u52d9\u4e2d\u8072\u660e\uff0c\u4f46\u5728\u53e6\u4e00\u500b\u4e8b\u52d9\u4e2d\u4f7f\u7528\uff0c\u5247\u53ef\u80fd\u6703\u5c0e\u81f4\u72c0\u614b\u4e0d\u6b63\u78ba\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc24000-WgxKvIaGqH\">\u5982\u4f55\u4fee\u5fa9\u932f\u8aa4\u4ee3\u78bc24000<\/h2>\n<p>\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc24000\u7684\u5177\u9ad4\u6b65\u9a5f\u53d6\u6c7a\u65bc\u932f\u8aa4\u7684\u6839\u672c\u539f\u56e0\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u89e3\u6c7a\u65b9\u6848\uff1a<\/p>\n<h3 id=\"1-%e7%a2%ba%e4%bf%9d%e6%b8%b8%e6%a8%99%e6%ad%a3%e7%a2%ba%e6%89%93%e9%96%8b-WgxKvIaGqH\">1. \u78ba\u4fdd\u6e38\u6a19\u6b63\u78ba\u6253\u958b<\/h3>\n<pre><code>DECLARE my_cursor CURSOR FOR SELECT * FROM my_table;<\/code><\/pre>\n<p>\u5728\u4f7f\u7528\u6e38\u6a19\u4e4b\u524d\uff0c\u8acb\u78ba\u4fdd\u5df2\u7d93\u6b63\u78ba\u5730\u8072\u660e\u4e26\u6253\u958b\u6e38\u6a19\u3002\u4f7f\u7528DECLARE\u8a9e\u53e5\u4f86\u5275\u5efa\u6e38\u6a19\uff0c\u4e26\u78ba\u4fdd\u5728\u4f7f\u7528\u6e38\u6a19\u4e4b\u524d\u6c92\u6709\u5176\u4ed6\u64cd\u4f5c\u5c0e\u81f4\u5176\u72c0\u614b\u4e0d\u6b63\u78ba\u3002<\/p>\n<h3 id=\"2-%e6%aa%a2%e6%9f%a5%e6%b8%b8%e6%a8%99%e7%9a%84%e7%8b%80%e6%85%8b-WgxKvIaGqH\">2. \u6aa2\u67e5\u6e38\u6a19\u7684\u72c0\u614b<\/h3>\n<p>\u5728\u57f7\u884c\u4efb\u4f55\u64cd\u4f5c\u4e4b\u524d\uff0c\u6aa2\u67e5\u6e38\u6a19\u7684\u72c0\u614b\u3002\u5982\u679c\u6e38\u6a19\u5df2\u7d93\u95dc\u9589\u6216\u5df2\u7d93\u5230\u9054\u7d50\u679c\u96c6\u7684\u672b\u5c3e\uff0c\u5247\u9700\u8981\u91cd\u65b0\u6253\u958b\u6e38\u6a19\u6216\u91cd\u65b0\u8072\u660e\u6e38\u6a19\u3002<\/p>\n<pre><code>FETCH NEXT FROM my_cursor;<\/code><\/pre>\n<p>\u5728\u57f7\u884cFETCH\u64cd\u4f5c\u4e4b\u524d\uff0c\u78ba\u4fdd\u6e38\u6a19\u4ecd\u7136\u8655\u65bc\u6709\u6548\u72c0\u614b\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e9%81%a9%e7%95%b6%e7%9a%84%e4%ba%8b%e5%8b%99%e7%ae%a1%e7%90%86-WgxKvIaGqH\">3. \u4f7f\u7528\u9069\u7576\u7684\u4e8b\u52d9\u7ba1\u7406<\/h3>\n<p>\u78ba\u4fdd\u6e38\u6a19\u7684\u8072\u660e\u548c\u4f7f\u7528\u5728\u540c\u4e00\u500b\u4e8b\u52d9\u4e2d\u9032\u884c\u3002\u5982\u679c\u6e38\u6a19\u5728\u4e00\u500b\u4e8b\u52d9\u4e2d\u8072\u660e\uff0c\u5247\u5fc5\u9808\u5728\u540c\u4e00\u4e8b\u52d9\u4e2d\u4f7f\u7528\u5b83\u3002<\/p>\n<h3 id=\"4-%e9%8c%af%e8%aa%a4%e8%99%95%e7%90%86-WgxKvIaGqH\">4. \u932f\u8aa4\u8655\u7406<\/h3>\n<p>\u5728\u61c9\u7528\u7a0b\u5e8f\u4e2d\u5be6\u65bd\u932f\u8aa4\u8655\u7406\u6a5f\u5236\uff0c\u4ee5\u4fbf\u5728\u6355\u7372\u5230\u932f\u8aa424000\u6642\u80fd\u5920\u9032\u884c\u9069\u7576\u7684\u8655\u7406\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u5728\u6355\u7372\u5230\u6b64\u932f\u8aa4\u6642\u91cd\u65b0\u8072\u660e\u6e38\u6a19\u6216\u8a18\u9304\u932f\u8aa4\u4fe1\u606f\u3002<\/p>\n<pre><code>BEGIN\n    -- \u5617\u8a66\u4f7f\u7528\u6e38\u6a19\nEXCEPTION\n    WHEN invalid_cursor_state THEN\n        -- \u8655\u7406\u932f\u8aa4\nEND;<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-WgxKvIaGqH\">\u7e3d\u7d50<\/h2>\n<p>PostgreSQL\u932f\u8aa4\u4ee3\u78bc24000 &#8211; invalid_cursor_state\u901a\u5e38\u662f\u7531\u65bc\u6e38\u6a19\u7684\u72c0\u614b\u4e0d\u6b63\u78ba\u5f15\u8d77\u7684\u3002\u901a\u904e\u78ba\u4fdd\u6e38\u6a19\u6b63\u78ba\u6253\u958b\u3001\u6aa2\u67e5\u6e38\u6a19\u72c0\u614b\u3001\u4f7f\u7528\u9069\u7576\u7684\u4e8b\u52d9\u7ba1\u7406\u4ee5\u53ca\u5be6\u65bd\u932f\u8aa4\u8655\u7406\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\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\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>\u4e86\u89e3\u5982\u4f55\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc24000 &#8211; invalid_cursor_state\uff0c\u89e3\u6c7a\u6e38\u6a19\u72c0\u614b\u554f\u984c\uff0c\u63d0\u5347\u6578\u64da\u5eab\u64cd\u4f5c\u6548\u7387\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-178824","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178824","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=178824"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178824\/revisions"}],"predecessor-version":[{"id":178825,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178824\/revisions\/178825"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=178824"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=178824"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=178824"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}