{"id":187810,"date":"2024-11-11T17:22:19","date_gmt":"2024-11-11T09:22:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/187810\/"},"modified":"2024-11-11T17:22:20","modified_gmt":"2024-11-11T09:22:20","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e5%a6%82%e4%bd%95%e5%8f%96%e5%88%b0%e5%85%a9%e4%bd%8d%e5%b0%8f%e6%95%b8%e7%9a%84number%e6%95%b8%e6%93%9a-%e6%95%b8%e6%93%9a%e5%ba%abnumber%e5%8f%96%e5%85%a9","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/187810\/","title":{"rendered":"\u6578\u64da\u5eab\u4e2d\u5982\u4f55\u53d6\u5230\u5169\u4f4d\u5c0f\u6578\u7684number\u6578\u64da (\u6578\u64da\u5eabnumber\u53d6\u5169\u4f4d\u5c0f\u6578)"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e5%a6%82%e4%bd%95%e5%8f%96%e5%88%b0%e5%85%a9%e4%bd%8d%e5%b0%8f%e6%95%b8%e7%9a%84number%e6%95%b8%e6%93%9a-lfzJQPCKrD\">\u6578\u64da\u5eab\u4e2d\u5982\u4f55\u53d6\u5230\u5169\u4f4d\u5c0f\u6578\u7684number\u6578\u64da<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u6578\u64da\u7684\u7cbe\u78ba\u6027\u548c\u683c\u5f0f\u5316\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u5c24\u5176\u662f\u5728\u8655\u7406\u91d1\u984d\u3001\u50f9\u683c\u6216\u5176\u4ed6\u9700\u8981\u7cbe\u78ba\u5c0f\u6578\u7684\u6578\u64da\u6642\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u63d0\u53d6\u5169\u4f4d\u5c0f\u6578\u7684number\u6578\u64da\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-lfzJQPCKrD\">\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\u985e\u578b<\/h2>\n<p>\u5728\u5927\u591a\u6578\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u4e2d\uff0c\u6578\u64da\u985e\u578b\u7684\u9078\u64c7\u5c0d\u65bc\u6578\u64da\u7684\u5b58\u5132\u548c\u67e5\u8a62\u81f3\u95dc\u91cd\u8981\u3002\u5c0d\u65bc\u9700\u8981\u5b58\u5132\u5c0f\u6578\u7684\u6578\u64da\uff0c\u901a\u5e38\u6703\u4f7f\u7528\u4ee5\u4e0b\u5e7e\u7a2e\u6578\u64da\u985e\u578b\uff1a<\/p>\n<ul>\n<li><strong>FLOAT<\/strong>\uff1a\u9019\u662f\u4e00\u7a2e\u6d6e\u9ede\u6578\u985e\u578b\uff0c\u9069\u5408\u5b58\u5132\u5c0f\u6578\uff0c\u4f46\u53ef\u80fd\u6703\u56e0\u70ba\u7cbe\u5ea6\u554f\u984c\u800c\u4e0d\u9069\u5408\u7528\u65bc\u91d1\u984d\u7b49\u9700\u8981\u7cbe\u78ba\u7684\u5c0f\u6578\u3002<\/li>\n<li><strong>DECIMAL<\/strong>\uff1a\u9019\u662f\u4e00\u7a2e\u5b9a\u9ede\u6578\u985e\u578b\uff0c\u80fd\u5920\u7cbe\u78ba\u5730\u5b58\u5132\u5c0f\u6578\uff0c\u9069\u5408\u7528\u65bc\u91d1\u984d\u7b49\u9700\u8981\u7cbe\u78ba\u8a08\u7b97\u7684\u5834\u5408\u3002<\/li>\n<li><strong>NUMERIC<\/strong>\uff1a\u8207DECIMAL\u985e\u4f3c\uff0cNUMERIC\u4e5f\u7528\u65bc\u5b58\u5132\u7cbe\u78ba\u7684\u5c0f\u6578\uff0c\u4e26\u4e14\u5728\u5927\u591a\u6578\u6578\u64da\u5eab\u4e2d\u53ef\u4ee5\u4e92\u63db\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e6%8f%90%e5%8f%96%e5%85%a9%e4%bd%8d%e5%b0%8f%e6%95%b8%e7%9a%84%e6%95%b8%e6%93%9a-lfzJQPCKrD\">\u5982\u4f55\u63d0\u53d6\u5169\u4f4d\u5c0f\u6578\u7684\u6578\u64da<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u4e2d\u63d0\u53d6\u5169\u4f4d\u5c0f\u6578\u7684\u6578\u64da\uff0c\u901a\u5e38\u53ef\u4ee5\u4f7f\u7528SQL\u67e5\u8a62\u8a9e\u53e5\u4e2d\u7684\u683c\u5f0f\u5316\u51fd\u6578\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u4e2d\u63d0\u53d6\u5169\u4f4d\u5c0f\u6578\u7684\u793a\u4f8b\uff1a<\/p>\n<h3 id=\"mysql-lfzJQPCKrD\">MySQL<\/h3>\n<pre><code>SELECT ROUND(column_name, 2) AS formatted_number\nFROM table_name;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c<code>ROUND<\/code>\u51fd\u6578\u5c07\u6307\u5b9a\u5217\u7684\u6578\u503c\u56db\u6368\u4e94\u5165\u5230\u5169\u4f4d\u5c0f\u6578\u3002<\/p>\n<h3 id=\"postgresql-lfzJQPCKrD\">PostgreSQL<\/h3>\n<pre><code>SELECT TO_CHAR(column_name, 'FM999999999.00') AS formatted_number\nFROM table_name;<\/code><\/pre>\n<p>\u5728PostgreSQL\u4e2d\uff0c<code>TO_CHAR<\/code>\u51fd\u6578\u53ef\u4ee5\u7528\u4f86\u683c\u5f0f\u5316\u6578\u5b57\uff0c\u4e26\u78ba\u4fdd\u8f38\u51fa\u70ba\u5169\u4f4d\u5c0f\u6578\u3002<\/p>\n<h3 id=\"sql-server-lfzJQPCKrD\">SQL Server<\/h3>\n<pre><code>SELECT CAST(ROUND(column_name, 2) AS DECIMAL(10, 2)) AS formatted_number\nFROM table_name;<\/code><\/pre>\n<p>\u5728SQL Server\u4e2d\uff0c<code>ROUND<\/code>\u51fd\u6578\u7528\u65bc\u56db\u6368\u4e94\u5165\uff0c\u800c<code>CAST<\/code>\u51fd\u6578\u5247\u5c07\u7d50\u679c\u8f49\u63db\u70ba\u6307\u5b9a\u7684DECIMAL\u683c\u5f0f\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-lfzJQPCKrD\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u8655\u7406\u5c0f\u6578\u6578\u64da\u6642\uff0c\u6709\u5e7e\u500b\u6ce8\u610f\u4e8b\u9805\u9700\u8981\u8003\u616e\uff1a<\/p>\n<ul>\n<li>\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\uff1a\u5c0d\u65bc\u9700\u8981\u7cbe\u78ba\u7684\u5c0f\u6578\uff0c\u5efa\u8b70\u4f7f\u7528DECIMAL\u6216NUMERIC\u985e\u578b\u3002<\/li>\n<li>\u6ce8\u610f\u56db\u6368\u4e94\u5165\u7684\u5f71\u97ff\uff1a\u5728\u9032\u884c\u56db\u6368\u4e94\u5165\u6642\uff0c\u53ef\u80fd\u6703\u5f71\u97ff\u5230\u6700\u7d42\u7684\u8a08\u7b97\u7d50\u679c\uff0c\u56e0\u6b64\u9700\u8981\u6839\u64da\u5177\u9ad4\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u56db\u6368\u4e94\u5165\u65b9\u6cd5\u3002<\/li>\n<li>\u683c\u5f0f\u5316\u8f38\u51fa\uff1a\u5728\u986f\u793a\u6578\u64da\u6642\uff0c\u78ba\u4fdd\u683c\u5f0f\u5316\u70ba\u5169\u4f4d\u5c0f\u6578\uff0c\u4ee5\u63d0\u9ad8\u53ef\u8b80\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-lfzJQPCKrD\">\u7e3d\u7d50<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u4e2d\u63d0\u53d6\u5169\u4f4d\u5c0f\u6578\u7684number\u6578\u64da\u662f\u4e00\u500b\u91cd\u8981\u7684\u64cd\u4f5c\uff0c\u5c24\u5176\u662f\u5728\u91d1\u878d\u548c\u5546\u696d\u61c9\u7528\u4e2d\u3002\u901a\u904e\u4f7f\u7528\u9069\u7576\u7684\u6578\u64da\u985e\u578b\u548cSQL\u51fd\u6578\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u548c\u986f\u793a\u9019\u4e9b\u6578\u64da\u3002\u7121\u8ad6\u60a8\u4f7f\u7528\u7684\u662fMySQL\u3001PostgreSQL\u9084\u662fSQL Server\uff0c\u4e86\u89e3\u5982\u4f55\u6b63\u78ba\u8655\u7406\u5c0f\u6578\u6578\u64da\u5c07\u6709\u52a9\u65bc\u63d0\u9ad8\u6578\u64da\u7684\u6e96\u78ba\u6027\u548c\u53ef\u9760\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u63d0\u53d6\u5169\u4f4d\u5c0f\u6578\u7684number\u6578\u64da\uff0c\u78ba\u4fdd\u6578\u64da\u7cbe\u78ba\u6027\u8207\u683c\u5f0f\u4e00\u81f4\u6027\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-187810","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187810","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=187810"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187810\/revisions"}],"predecessor-version":[{"id":187811,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187810\/revisions\/187811"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=187810"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=187810"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=187810"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}