{"id":96840,"date":"2024-10-20T12:48:18","date_gmt":"2024-10-20T04:48:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/96840\/"},"modified":"2024-10-20T12:48:18","modified_gmt":"2024-10-20T04:48:18","slug":"postgresql-42p05-%e9%87%8d%e8%a4%87%e7%9a%84%e9%a0%90%e8%99%95%e7%90%86%e8%aa%9e%e5%8f%a5-%e6%8a%a5%e9%94%99-%e6%95%85%e9%9a%9c%e4%bf%ae%e5%a4%8d-%e8%bf%9c%e7%a8%8b%e5%a4%84%e7%90%86","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/96840\/","title":{"rendered":"PostgreSQL 42P05: \u91cd\u8907\u7684\u9810\u8655\u7406\u8a9e\u53e5 \u62a5\u9519 \u6545\u969c\u4fee\u590d \u8fdc\u7a0b\u5904\u7406"},"content":{"rendered":"<h1 id=\"postgresql-42p05-%e9%87%8d%e8%a4%87%e7%9a%84%e9%a0%90%e8%99%95%e7%90%86%e8%aa%9e%e5%8f%a5%e5%a0%b1%e9%8c%af%e6%95%85%e9%9a%9c%e4%bf%ae%e5%be%a9%e9%81%a0%e7%a8%8b%e8%99%95%e7%90%86-KtWzycIecn\">PostgreSQL 42P05: \u91cd\u8907\u7684\u9810\u8655\u7406\u8a9e\u53e5\u5831\u932f\u6545\u969c\u4fee\u5fa9\u9060\u7a0b\u8655\u7406<\/h1>\n<p>\u5728\u4f7f\u7528 PostgreSQL \u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f 42P05 \u932f\u8aa4\uff0c\u9019\u901a\u5e38\u8868\u793a\u300c\u91cd\u8907\u7684\u9810\u8655\u7406\u8a9e\u53e5\u300d\u3002\u9019\u7bc7\u6587\u7ae0\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u500b\u932f\u8aa4\u7684\u6210\u56e0\u3001\u5f71\u97ff\u4ee5\u53ca\u5982\u4f55\u9032\u884c\u6545\u969c\u4fee\u5fa9\uff0c\u7279\u5225\u662f\u5728\u9060\u7a0b\u8655\u7406\u7684\u60c5\u6cc1\u4e0b\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af-postgresql-42p05-%e9%8c%af%e8%aa%a4%ef%bc%9f-KtWzycIecn\">\u4ec0\u9ebc\u662f PostgreSQL 42P05 \u932f\u8aa4\uff1f<\/h2>\n<p>PostgreSQL \u7684\u932f\u8aa4\u4ee3\u78bc 42P05 \u901a\u5e38\u51fa\u73fe\u5728\u5617\u8a66\u57f7\u884c\u4e00\u500b\u5df2\u7d93\u5b58\u5728\u7684\u9810\u8655\u7406\u8a9e\u53e5\u6642\u3002\u9810\u8655\u7406\u8a9e\u53e5\u662f\u6307\u5728\u57f7\u884c SQL \u67e5\u8a62\u4e4b\u524d\uff0c\u5148\u5c07\u5176\u7de8\u8b6f\u4e26\u6e96\u5099\u597d\u4ee5\u63d0\u9ad8\u6027\u80fd\u3002\u7576\u958b\u767c\u8005\u5728\u540c\u4e00\u500b\u6703\u8a71\u4e2d\u91cd\u8907\u5b9a\u7fa9\u76f8\u540c\u7684\u9810\u8655\u7406\u8a9e\u53e5\u6642\uff0c\u5c31\u6703\u5c0e\u81f4\u9019\u500b\u932f\u8aa4\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e7%9a%84%e6%88%90%e5%9b%a0-KtWzycIecn\">\u932f\u8aa4\u7684\u6210\u56e0<\/h2>\n<p>\u9020\u6210 42P05 \u932f\u8aa4\u7684\u4e3b\u8981\u539f\u56e0\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u91cd\u8907\u5b9a\u7fa9\uff1a<\/strong>\u5728\u540c\u4e00\u500b\u6578\u64da\u5eab\u9023\u63a5\u4e2d\uff0c\u958b\u767c\u8005\u53ef\u80fd\u4e0d\u5c0f\u5fc3\u91cd\u8907\u5b9a\u7fa9\u4e86\u76f8\u540c\u7684\u9810\u8655\u7406\u8a9e\u53e5\u3002<\/li>\n<li><strong>\u6703\u8a71\u7ba1\u7406\u4e0d\u7576\uff1a<\/strong>\u5728\u591a\u7dda\u7a0b\u6216\u591a\u6703\u8a71\u7684\u74b0\u5883\u4e2d\uff0c\u53ef\u80fd\u6703\u56e0\u70ba\u6703\u8a71\u7ba1\u7406\u4e0d\u7576\u800c\u5c0e\u81f4\u91cd\u8907\u5b9a\u7fa9\u3002<\/li>\n<li><strong>\u932f\u8aa4\u7684\u4ee3\u78bc\u908f\u8f2f\uff1a<\/strong>\u5728\u61c9\u7528\u7a0b\u5e8f\u7684\u908f\u8f2f\u4e2d\uff0c\u53ef\u80fd\u5b58\u5728\u932f\u8aa4\uff0c\u5c0e\u81f4\u540c\u4e00\u8a9e\u53e5\u88ab\u591a\u6b21\u57f7\u884c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9-42p05-%e9%8c%af%e8%aa%a4-KtWzycIecn\">\u5982\u4f55\u4fee\u5fa9 42P05 \u932f\u8aa4<\/h2>\n<p>\u4fee\u5fa9\u9019\u500b\u932f\u8aa4\u7684\u6b65\u9a5f\u5982\u4e0b\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e9%a0%90%e8%99%95%e7%90%86%e8%aa%9e%e5%8f%a5%e7%9a%84%e5%ae%9a%e7%be%a9-KtWzycIecn\">1. \u6aa2\u67e5\u9810\u8655\u7406\u8a9e\u53e5\u7684\u5b9a\u7fa9<\/h3>\n<p>\u9996\u5148\uff0c\u6aa2\u67e5\u4f60\u7684\u4ee3\u78bc\uff0c\u78ba\u4fdd\u6c92\u6709\u91cd\u8907\u5b9a\u7fa9\u76f8\u540c\u7684\u9810\u8655\u7406\u8a9e\u53e5\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\u4f86\u67e5\u770b\u7576\u524d\u6703\u8a71\u4e2d\u7684\u6240\u6709\u9810\u8655\u7406\u8a9e\u53e5\uff1a<\/p>\n<pre><code>SELECT * FROM pg_prepared_statements;<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e4%b8%8d%e5%90%8c%e7%9a%84%e5%90%8d%e7%a8%b1-KtWzycIecn\">2. \u4f7f\u7528\u4e0d\u540c\u7684\u540d\u7a31<\/h3>\n<p>\u5982\u679c\u78ba\u5be6\u9700\u8981\u591a\u6b21\u4f7f\u7528\u76f8\u4f3c\u7684\u9810\u8655\u7406\u8a9e\u53e5\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u4e0d\u540c\u7684\u540d\u7a31\u4f86\u5b9a\u7fa9\u5b83\u5011\uff0c\u4ee5\u907f\u514d\u91cd\u8907\u3002<\/p>\n<h3 id=\"3-%e9%87%8b%e6%94%be%e9%a0%90%e8%99%95%e7%90%86%e8%aa%9e%e5%8f%a5-KtWzycIecn\">3. \u91cb\u653e\u9810\u8655\u7406\u8a9e\u53e5<\/h3>\n<p>\u5728\u4e0d\u518d\u9700\u8981\u67d0\u500b\u9810\u8655\u7406\u8a9e\u53e5\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b SQL \u8a9e\u53e5\u91cb\u653e\u5b83\uff1a<\/p>\n<pre><code>DEALLOCATE statement_name;<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u4e0d\u6703\u56e0\u70ba\u91cd\u8907\u5b9a\u7fa9\u800c\u5c0e\u81f4\u932f\u8aa4\u3002<\/p>\n<h3 id=\"4-%e6%aa%a2%e6%9f%a5%e6%87%89%e7%94%a8%e7%a8%8b%e5%ba%8f%e9%82%8f%e8%bc%af-KtWzycIecn\">4. \u6aa2\u67e5\u61c9\u7528\u7a0b\u5e8f\u908f\u8f2f<\/h3>\n<p>\u5982\u679c\u932f\u8aa4\u662f\u7531\u65bc\u61c9\u7528\u7a0b\u5e8f\u908f\u8f2f\u5f15\u8d77\u7684\uff0c\u5247\u9700\u8981\u4ed4\u7d30\u6aa2\u67e5\u4ee3\u78bc\uff0c\u78ba\u4fdd\u5728\u9069\u7576\u7684\u6642\u5019\u5b9a\u7fa9\u548c\u57f7\u884c\u9810\u8655\u7406\u8a9e\u53e5\u3002<\/p>\n<h2 id=\"%e9%81%a0%e7%a8%8b%e8%99%95%e7%90%86%e4%b8%ad%e7%9a%84%e8%80%83%e9%87%8f-KtWzycIecn\">\u9060\u7a0b\u8655\u7406\u4e2d\u7684\u8003\u91cf<\/h2>\n<p>\u5728\u9060\u7a0b\u8655\u7406 PostgreSQL \u6578\u64da\u5eab\u6642\uff0c\u7279\u5225\u662f\u5728\u4f7f\u7528\u96f2\u670d\u52d9\u6216 VPS \u74b0\u5883\u4e2d\uff0c\u958b\u767c\u8005\u9700\u8981\u7279\u5225\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li><strong>\u9023\u63a5\u7ba1\u7406\uff1a<\/strong>\u78ba\u4fdd\u6bcf\u500b\u9023\u63a5\u90fd\u80fd\u6b63\u78ba\u7ba1\u7406\u9810\u8655\u7406\u8a9e\u53e5\uff0c\u907f\u514d\u56e0\u70ba\u591a\u500b\u9023\u63a5\u540c\u6642\u57f7\u884c\u76f8\u540c\u7684\u8a9e\u53e5\u800c\u5c0e\u81f4\u932f\u8aa4\u3002<\/li>\n<li><strong>\u6027\u80fd\u76e3\u63a7\uff1a<\/strong>\u4f7f\u7528\u6027\u80fd\u76e3\u63a7\u5de5\u5177\u4f86\u6aa2\u67e5\u9810\u8655\u7406\u8a9e\u53e5\u7684\u4f7f\u7528\u60c5\u6cc1\uff0c\u53ca\u6642\u767c\u73fe\u4e26\u4fee\u5fa9\u6f5b\u5728\u7684\u554f\u984c\u3002<\/li>\n<li><strong>\u65e5\u8a8c\u8a18\u9304\uff1a<\/strong>\u555f\u7528\u8a73\u7d30\u7684\u65e5\u8a8c\u8a18\u9304\uff0c\u4ee5\u4fbf\u5728\u51fa\u73fe\u932f\u8aa4\u6642\u80fd\u5920\u5feb\u901f\u5b9a\u4f4d\u554f\u984c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-KtWzycIecn\">\u7e3d\u7d50<\/h2>\n<p>PostgreSQL \u7684 42P05 \u932f\u8aa4\u662f\u7531\u65bc\u91cd\u8907\u7684\u9810\u8655\u7406\u8a9e\u53e5\u5f15\u8d77\u7684\uff0c\u901a\u904e\u6aa2\u67e5\u4ee3\u78bc\u3001\u91cb\u653e\u4e0d\u518d\u9700\u8981\u7684\u8a9e\u53e5\u4ee5\u53ca\u512a\u5316\u61c9\u7528\u7a0b\u5e8f\u908f\u8f2f\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u4fee\u5fa9\u9019\u4e00\u554f\u984c\u3002\u5728\u9060\u7a0b\u8655\u7406\u74b0\u5883\u4e2d\uff0c\u826f\u597d\u7684\u9023\u63a5\u7ba1\u7406\u548c\u6027\u80fd\u76e3\u63a7\u662f\u907f\u514d\u6b64\u985e\u932f\u8aa4\u7684\u95dc\u9375\u3002\u82e5\u60a8\u9700\u8981\u9032\u4e00\u6b65\u7684\u652f\u6301\u6216\u5c0b\u627e\u5408\u9069\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8003\u616e\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\uff0c\u70ba\u60a8\u7684\u6578\u64da\u5eab\u63d0\u4f9b\u7a69\u5b9a\u7684\u904b\u884c\u74b0\u5883\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u89e3\u51b3PostgreSQL 42P05\u9519\u8bef\uff1a\u91cd\u8907\u7684\u9810\u8655\u7406\u8a9e\u53e5\uff0c\u63d0\u4f9b\u6545\u969c\u4fee\u590d\u548c\u8fdc\u7a0b\u5904\u7406\u7684\u6709\u6548\u65b9\u6cd5\u4e0e\u6280\u5de7\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-96840","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96840","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=96840"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96840\/revisions"}],"predecessor-version":[{"id":96841,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/96840\/revisions\/96841"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=96840"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=96840"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=96840"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}