{"id":178614,"date":"2024-11-08T19:26:25","date_gmt":"2024-11-08T11:26:25","guid":{"rendered":"https:\/\/server.hk\/cnblog\/178614\/"},"modified":"2024-11-08T19:26:26","modified_gmt":"2024-11-08T11:26:26","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%9a01000-warning%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/178614\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc\uff1a01000 &#8211; warning\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%9a01000-warning%ef%bc%9f-grEukuMmrq\">\u5982\u4f55\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc\uff1a01000 &#8211; warning\uff1f<\/h1>\n<p>\u5728\u4f7f\u7528PostgreSQL\u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\u4ee3\u78bc\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u932f\u8aa4\u4ee3\u78bc01000\uff0c\u9019\u662f\u4e00\u500b\u8b66\u544a\u4fe1\u606f\u3002\u96d6\u7136\u9019\u500b\u932f\u8aa4\u4ee3\u78bc\u4e0d\u6703\u963b\u6b62\u67e5\u8a62\u7684\u57f7\u884c\uff0c\u4f46\u5b83\u53ef\u80fd\u6703\u5f71\u97ff\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u67e5\u8a62\u7684\u6548\u7387\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u7406\u89e3\u548c\u4fee\u5fa9\u9019\u500b\u8b66\u544a\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afpostgresql%e9%8c%af%e8%aa%a4%e4%bb%a3%e7%a2%bc01000%ef%bc%9f-grEukuMmrq\">\u4ec0\u9ebc\u662fPostgreSQL\u932f\u8aa4\u4ee3\u78bc01000\uff1f<\/h2>\n<p>PostgreSQL\u7684\u932f\u8aa4\u4ee3\u78bc01000\u901a\u5e38\u8868\u793a\u4e00\u500b\u8b66\u544a\uff0c\u9019\u610f\u5473\u8457\u5728\u57f7\u884cSQL\u67e5\u8a62\u6642\u51fa\u73fe\u4e86\u4e00\u4e9b\u6f5b\u5728\u7684\u554f\u984c\u3002\u9019\u500b\u8b66\u544a\u901a\u5e38\u8207\u672a\u4f7f\u7528\u7684\u67e5\u8a62\u7d50\u679c\u6216\u672a\u6b63\u78ba\u8655\u7406\u7684\u6578\u64da\u6709\u95dc\u3002\u96d6\u7136\u9019\u4e0d\u6703\u5c0e\u81f4\u67e5\u8a62\u5931\u6557\uff0c\u4f46\u9577\u671f\u5ffd\u8996\u9019\u4e9b\u8b66\u544a\u53ef\u80fd\u6703\u5c0e\u81f4\u6578\u64da\u5eab\u6027\u80fd\u4e0b\u964d\u6216\u6578\u64da\u4e0d\u4e00\u81f4\u3002<\/p>\n<h2 id=\"%e5%b8%b8%e8%a6%8b%e5%8e%9f%e5%9b%a0-grEukuMmrq\">\u5e38\u898b\u539f\u56e0<\/h2>\n<ul>\n<li><strong>\u672a\u4f7f\u7528\u7684\u67e5\u8a62\u7d50\u679c\uff1a<\/strong>\u7576\u57f7\u884c\u4e00\u500b\u67e5\u8a62\u4f46\u4e0d\u4f7f\u7528\u5176\u7d50\u679c\u6642\uff0cPostgreSQL\u6703\u767c\u51fa\u8b66\u544a\u3002\u4f8b\u5982\uff0c\u57f7\u884c\u4e00\u500bSELECT\u67e5\u8a62\u537b\u4e0d\u8655\u7406\u8fd4\u56de\u7684\u6578\u64da\u3002<\/li>\n<li><strong>\u672a\u6b63\u78ba\u8655\u7406\u7684\u6578\u64da\uff1a<\/strong>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u6578\u64da\u53ef\u80fd\u672a\u6309\u7167\u9810\u671f\u9032\u884c\u8655\u7406\uff0c\u5c0e\u81f4\u8b66\u544a\u7684\u7522\u751f\u3002<\/li>\n<li><strong>\u4e0d\u5fc5\u8981\u7684\u67e5\u8a62\uff1a<\/strong>\u57f7\u884c\u4e0d\u5fc5\u8981\u7684\u67e5\u8a62\u6216\u91cd\u8907\u67e5\u8a62\u4e5f\u53ef\u80fd\u5c0e\u81f4\u6b64\u8b66\u544a\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%bc01000%ef%bc%9f-grEukuMmrq\">\u5982\u4f55\u4fee\u5fa9\u932f\u8aa4\u4ee3\u78bc01000\uff1f<\/h2>\n<p>\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc01000\u7684\u904e\u7a0b\u901a\u5e38\u6d89\u53ca\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e6%9f%a5%e8%a9%a2%e8%aa%9e%e5%8f%a5-grEukuMmrq\">1. \u6aa2\u67e5\u67e5\u8a62\u8a9e\u53e5<\/h3>\n<p>\u9996\u5148\uff0c\u6aa2\u67e5\u5f15\u767c\u8b66\u544a\u7684\u67e5\u8a62\u8a9e\u53e5\u3002\u78ba\u4fdd\u6240\u6709\u7684SELECT\u67e5\u8a62\u90fd\u6709\u76f8\u61c9\u7684\u8655\u7406\u908f\u8f2f\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT * FROM users WHERE age &gt; 18;<\/code><\/pre>\n<p>\u5982\u679c\u4f60\u53ea\u662f\u57f7\u884c\u4e86\u9019\u500b\u67e5\u8a62\u800c\u6c92\u6709\u4f7f\u7528\u8fd4\u56de\u7684\u7d50\u679c\uff0c\u5247\u6703\u7522\u751f\u8b66\u544a\u3002\u53ef\u4ee5\u901a\u904e\u5c07\u7d50\u679c\u5b58\u5132\u5728\u8b8a\u91cf\u4e2d\u4f86\u89e3\u6c7a\u9019\u500b\u554f\u984c\uff1a<\/p>\n<pre><code>WITH user_data AS (SELECT * FROM users WHERE age &gt; 18) \nSELECT * FROM user_data;<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8explain%e5%91%bd%e4%bb%a4-grEukuMmrq\">2. \u4f7f\u7528EXPLAIN\u547d\u4ee4<\/h3>\n<p>\u4f7f\u7528EXPLAIN\u547d\u4ee4\u4f86\u5206\u6790\u67e5\u8a62\u7684\u57f7\u884c\u8a08\u5283\uff0c\u9019\u53ef\u4ee5\u5e6b\u52a9\u4f60\u4e86\u89e3\u67e5\u8a62\u7684\u6027\u80fd\u554f\u984c\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u67e5\u8a62\u7684\u6548\u7387\uff0c\u4e26\u6e1b\u5c11\u4e0d\u5fc5\u8981\u7684\u8b66\u544a\u3002<\/p>\n<pre><code>EXPLAIN SELECT * FROM users WHERE age &gt; 18;<\/code><\/pre>\n<h3 id=\"3-%e5%84%aa%e5%8c%96%e6%9f%a5%e8%a9%a2-grEukuMmrq\">3. \u512a\u5316\u67e5\u8a62<\/h3>\n<p>\u5982\u679c\u767c\u73fe\u67e5\u8a62\u6548\u7387\u4f4e\u4e0b\uff0c\u8003\u616e\u5c0d\u5176\u9032\u884c\u512a\u5316\u3002\u9019\u53ef\u80fd\u5305\u62ec\u6dfb\u52a0\u7d22\u5f15\u3001\u91cd\u5beb\u67e5\u8a62\u6216\u4f7f\u7528\u66f4\u6709\u6548\u7684\u6578\u64da\u7d50\u69cb\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-grEukuMmrq\">4. \u6aa2\u67e5\u61c9\u7528\u7a0b\u5e8f\u908f\u8f2f<\/h3>\n<p>\u78ba\u4fdd\u61c9\u7528\u7a0b\u5e8f\u908f\u8f2f\u6b63\u78ba\u8655\u7406\u67e5\u8a62\u7d50\u679c\u3002\u5982\u679c\u67e5\u8a62\u7684\u7d50\u679c\u4e0d\u518d\u9700\u8981\uff0c\u5247\u61c9\u907f\u514d\u57f7\u884c\u8a72\u67e5\u8a62\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-grEukuMmrq\">\u7d50\u8ad6<\/h2>\n<p>PostgreSQL\u932f\u8aa4\u4ee3\u78bc01000\u662f\u4e00\u500b\u8b66\u544a\uff0c\u96d6\u7136\u4e0d\u6703\u76f4\u63a5\u5f71\u97ff\u67e5\u8a62\u7684\u57f7\u884c\uff0c\u4f46\u9577\u671f\u5ffd\u8996\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u554f\u984c\u3002\u901a\u904e\u6aa2\u67e5\u67e5\u8a62\u8a9e\u53e5\u3001\u4f7f\u7528EXPLAIN\u547d\u4ee4\u3001\u512a\u5316\u67e5\u8a62\u548c\u6aa2\u67e5\u61c9\u7528\u7a0b\u5e8f\u908f\u8f2f\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u4fee\u5fa9\u9019\u500b\u8b66\u544a\u3002\u4fdd\u6301\u6578\u64da\u5eab\u7684\u5065\u5eb7\u904b\u884c\u5c0d\u65bc\u4efb\u4f55\u4f7f\u7528PostgreSQL\u7684\u958b\u767c\u8005\u4f86\u8aaa\u90fd\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u679c\u60a8\u9700\u8981\u66f4\u591a\u6709\u95dc<em><a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a><\/em>\u548c<em><a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a><\/em>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u6e90\u548c\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u4fee\u5fa9PostgreSQL\u932f\u8aa4\u4ee3\u78bc01000\u7684\u8b66\u544a\uff0c\u63d0\u4f9b\u6709\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u548c\u6700\u4f73\u5be6\u8e10\uff0c\u78ba\u4fdd\u6578\u64da\u5eab\u904b\u884c\u9806\u66a2\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-178614","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178614","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=178614"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178614\/revisions"}],"predecessor-version":[{"id":178615,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/178614\/revisions\/178615"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=178614"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=178614"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=178614"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}