{"id":178740,"date":"2024-11-08T20:30:23","date_gmt":"2024-11-08T12:30:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/178740\/"},"modified":"2024-11-08T20:30:24","modified_gmt":"2024-11-08T12:30:24","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%9a2201w-invalid_row_count_in_limit_clause%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/178740\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc\uff1a2201W &#8211; invalid_row_count_in_limit_clause\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%9a2201w-invalid_row_count_in_limit_clause-hYVjoNsqYp\">\u5982\u4f55\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc\uff1a2201W &#8211; invalid_row_count_in_limit_clause<\/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\u662f2201W\uff0c\u9019\u662f\u4e00\u500b\u8207LIMIT\u5b50\u53e5\u4e2d\u884c\u6578\u4e0d\u6b63\u78ba\u6709\u95dc\u7684\u8b66\u544a\u3002\u9019\u7bc7\u6587\u7ae0\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u500b\u932f\u8aa4\u7684\u539f\u56e0\u3001\u5f71\u97ff\u4ee5\u53ca\u5982\u4f55\u6709\u6548\u5730\u4fee\u5fa9\u5b83\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc2201w%e7%9a%84%e8%83%8c%e6%99%af-hYVjoNsqYp\">\u932f\u8aa4\u4ee3\u78bc2201W\u7684\u80cc\u666f<\/h2>\n<p>PostgreSQL\u7684\u932f\u8aa4\u4ee3\u78bc2201W\u8868\u793a\u5728LIMIT\u5b50\u53e5\u4e2d\u6307\u5b9a\u7684\u884c\u6578\u7121\u6548\u3002\u9019\u901a\u5e38\u767c\u751f\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528LIMIT\u6642\uff0c\u7576\u6307\u5b9a\u7684\u884c\u6578\u8d85\u904e\u4e86\u67e5\u8a62\u7d50\u679c\u7684\u5be6\u969b\u884c\u6578\u3002\u9019\u500b\u8b66\u544a\u4e0d\u6703\u963b\u6b62\u67e5\u8a62\u7684\u57f7\u884c\uff0c\u4f46\u53ef\u80fd\u6703\u5c0e\u81f4\u958b\u767c\u8005\u5c0d\u67e5\u8a62\u7d50\u679c\u7684\u7406\u89e3\u7522\u751f\u8aa4\u89e3\u3002<\/p>\n<h2 id=\"%e5%b8%b8%e8%a6%8b%e5%8e%9f%e5%9b%a0-hYVjoNsqYp\">\u5e38\u898b\u539f\u56e0<\/h2>\n<ul>\n<li><strong>\u67e5\u8a62\u7d50\u679c\u884c\u6578\u4e0d\u8db3\uff1a<\/strong>\u7576\u67e5\u8a62\u7684\u7d50\u679c\u96c6\u884c\u6578\u5c11\u65bcLIMIT\u4e2d\u6307\u5b9a\u7684\u884c\u6578\u6642\uff0c\u5c31\u6703\u51fa\u73fe\u6b64\u8b66\u544a\u3002\u4f8b\u5982\uff0c\u5982\u679c\u67e5\u8a62\u8fd4\u56de\u4e865\u884c\u6578\u64da\uff0c\u4f46LIMIT\u537b\u8a2d\u7f6e\u70ba10\u884c\uff0c\u5247\u6703\u89f8\u767c\u6b64\u8b66\u544a\u3002<\/li>\n<li><strong>\u4f7f\u7528\u4e0d\u7576\u7684\u5b50\u67e5\u8a62\uff1a<\/strong>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528\u5b50\u67e5\u8a62\u6642\u53ef\u80fd\u6703\u5c0e\u81f4LIMIT\u7684\u884c\u6578\u4e0d\u6b63\u78ba\uff0c\u7279\u5225\u662f\u7576\u5b50\u67e5\u8a62\u7684\u7d50\u679c\u96c6\u4e0d\u7b26\u5408\u9810\u671f\u6642\u3002<\/li>\n<li><strong>\u6578\u64da\u5eab\u72c0\u614b\u8b8a\u5316\uff1a<\/strong>\u5982\u679c\u5728\u67e5\u8a62\u57f7\u884c\u671f\u9593\uff0c\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\u767c\u751f\u4e86\u8b8a\u5316\uff08\u4f8b\u5982\uff0c\u63d2\u5165\u6216\u522a\u9664\u884c\uff09\uff0c\u4e5f\u53ef\u80fd\u5c0e\u81f4LIMIT\u7684\u884c\u6578\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-hYVjoNsqYp\">\u5982\u4f55\u4fee\u5fa9\u932f\u8aa4<\/h2>\n<p>\u4fee\u5fa92201W\u932f\u8aa4\u7684\u95dc\u9375\u5728\u65bc\u78ba\u4fddLIMIT\u5b50\u53e5\u4e2d\u7684\u884c\u6578\u8207\u67e5\u8a62\u7d50\u679c\u96c6\u7684\u5be6\u969b\u884c\u6578\u76f8\u7b26\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5177\u9ad4\u7684\u89e3\u6c7a\u65b9\u6848\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e6%9f%a5%e8%a9%a2%e7%b5%90%e6%9e%9c-hYVjoNsqYp\">1. \u6aa2\u67e5\u67e5\u8a62\u7d50\u679c<\/h3>\n<p>\u9996\u5148\uff0c\u57f7\u884c\u67e5\u8a62\u800c\u4e0d\u4f7f\u7528LIMIT\uff0c\u6aa2\u67e5\u5be6\u969b\u8fd4\u56de\u7684\u884c\u6578\u3002\u9019\u6a23\u53ef\u4ee5\u5e6b\u52a9\u4f60\u4e86\u89e3\u67e5\u8a62\u7684\u7d50\u679c\u96c6\u5927\u5c0f\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT * FROM your_table;<\/code><\/pre>\n<p>\u6839\u64da\u8fd4\u56de\u7684\u884c\u6578\uff0c\u8abf\u6574LIMIT\u7684\u503c\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e5%8b%95%e6%85%8blimit-hYVjoNsqYp\">2. \u4f7f\u7528\u52d5\u614bLIMIT<\/h3>\n<p>\u5982\u679c\u4f60\u4e0d\u78ba\u5b9a\u67e5\u8a62\u7d50\u679c\u7684\u884c\u6578\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u52d5\u614bLIMIT\u3002\u9019\u53ef\u4ee5\u901a\u904e\u8a08\u7b97\u67e5\u8a62\u7d50\u679c\u7684\u884c\u6578\u4f86\u5be6\u73fe\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>WITH result AS (\n    SELECT * FROM your_table\n)\nSELECT * FROM result\nLIMIT (SELECT COUNT(*) FROM result);<\/code><\/pre>\n<h3 id=\"3-%e6%aa%a2%e6%9f%a5%e5%ad%90%e6%9f%a5%e8%a9%a2-hYVjoNsqYp\">3. \u6aa2\u67e5\u5b50\u67e5\u8a62<\/h3>\n<p>\u5982\u679c\u4f60\u7684\u67e5\u8a62\u4e2d\u4f7f\u7528\u4e86\u5b50\u67e5\u8a62\uff0c\u8acb\u78ba\u4fdd\u5b50\u67e5\u8a62\u7684\u7d50\u679c\u96c6\u662f\u6b63\u78ba\u7684\u3002\u53ef\u4ee5\u55ae\u7368\u57f7\u884c\u5b50\u67e5\u8a62\u4f86\u6aa2\u67e5\u5176\u8fd4\u56de\u7684\u884c\u6578\uff0c\u4e26\u6839\u64da\u9700\u8981\u8abf\u6574LIMIT\u3002<\/p>\n<h3 id=\"4-%e7%9b%a3%e6%8e%a7%e6%95%b8%e6%93%9a%e5%ba%ab%e8%ae%8a%e5%8c%96-hYVjoNsqYp\">4. \u76e3\u63a7\u6578\u64da\u5eab\u8b8a\u5316<\/h3>\n<p>\u5982\u679c\u4f60\u7684\u6578\u64da\u5eab\u5728\u67e5\u8a62\u57f7\u884c\u671f\u9593\u7d93\u5e38\u8b8a\u5316\uff0c\u8003\u616e\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528\u9396\u5b9a\u6216\u5176\u4ed6\u6a5f\u5236\u4f86\u9632\u6b62\u6578\u64da\u4e0d\u4e00\u81f4\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528FOR UPDATE\u4f86\u9396\u5b9a\u884c\uff1a<\/p>\n<pre><code>SELECT * FROM your_table FOR UPDATE;<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-hYVjoNsqYp\">\u7d50\u8ad6<\/h2>\n<p>PostgreSQL\u932f\u8aa4\u4ee3\u78bc2201W\u96d6\u7136\u4e0d\u6703\u963b\u6b62\u67e5\u8a62\u7684\u57f7\u884c\uff0c\u4f46\u7406\u89e3\u5176\u80cc\u5f8c\u7684\u539f\u56e0\u548c\u5f71\u97ff\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u901a\u904e\u6aa2\u67e5\u67e5\u8a62\u7d50\u679c\u3001\u4f7f\u7528\u52d5\u614bLIMIT\u3001\u6aa2\u67e5\u5b50\u67e5\u8a62\u4ee5\u53ca\u76e3\u63a7\u6578\u64da\u5eab\u8b8a\u5316\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u4fee\u5fa9\u9019\u500b\u932f\u8aa4\uff0c\u5f9e\u800c\u63d0\u9ad8\u67e5\u8a62\u7684\u6e96\u78ba\u6027\u548c\u53ef\u9760\u6027\u3002<\/p>\n<p>\u5982\u679c\u4f60\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528\u6211\u5011\u7684<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u670d\u52d9\uff0c\u63d0\u4f9b\u9ad8\u6548\u80fd\u7684\u6578\u64da\u5eab\u652f\u6301\uff0c\u52a9\u4f60\u8f15\u9b06\u7ba1\u7406\u6578\u64da\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc2201W\uff1a\u7121\u6548\u7684\u884c\u6578\u9650\u5236\u5b50\u53e5\uff0c\u4e26\u78ba\u4fdd\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-178740","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178740","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=178740"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178740\/revisions"}],"predecessor-version":[{"id":178741,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178740\/revisions\/178741"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=178740"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=178740"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=178740"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}