{"id":95168,"date":"2024-10-19T22:48:17","date_gmt":"2024-10-19T14:48:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/95168\/"},"modified":"2024-10-19T22:48:18","modified_gmt":"2024-10-19T14:48:18","slug":"oracle%e5%87%bd%e6%95%b8to_char%e8%bd%89%e5%8c%96%e6%88%90%e5%b0%8f%e6%95%b8%e9%bb%9e%e7%9a%84%e4%bd%8d%e6%95%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/95168\/","title":{"rendered":"Oracle\u51fd\u6578to_char\u8f49\u5316\u6210\u5c0f\u6578\u9ede\u7684\u4f4d\u6578"},"content":{"rendered":"<h1 id=\"oracle%e5%87%bd%e6%95%b8to_char%e8%bd%89%e5%8c%96%e6%88%90%e5%b0%8f%e6%95%b8%e9%bb%9e%e7%9a%84%e4%bd%8d%e6%95%b8-fTeOdLnnCE\">Oracle\u51fd\u6578to_char\u8f49\u5316\u6210\u5c0f\u6578\u9ede\u7684\u4f4d\u6578<\/h1>\n<p>\u5728Oracle\u6578\u64da\u5eab\u4e2d\uff0c<code>TO_CHAR<\/code>\u51fd\u6578\u662f\u4e00\u500b\u975e\u5e38\u91cd\u8981\u7684\u5de5\u5177\uff0c\u4e3b\u8981\u7528\u65bc\u5c07\u6578\u64da\u8f49\u63db\u70ba\u5b57\u7b26\u683c\u5f0f\u3002\u9019\u500b\u51fd\u6578\u4e0d\u50c5\u53ef\u4ee5\u7528\u65bc\u65e5\u671f\u548c\u6642\u9593\u7684\u683c\u5f0f\u5316\uff0c\u9084\u53ef\u4ee5\u7528\u65bc\u6578\u5b57\u7684\u683c\u5f0f\u5316\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u63a7\u5236\u5c0f\u6578\u9ede\u4f4d\u6578\u7684\u60c5\u6cc1\u4e0b\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528<code>TO_CHAR<\/code>\u51fd\u6578\u4f86\u8f49\u5316\u6578\u5b57\u4e26\u63a7\u5236\u5c0f\u6578\u9ede\u7684\u4f4d\u6578\u3002<\/p>\n<h2 id=\"to_char%e5%87%bd%e6%95%b8%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-fTeOdLnnCE\">TO_CHAR\u51fd\u6578\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p><code>TO_CHAR<\/code>\u51fd\u6578\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>TO_CHAR(value, format_mask)<\/code><\/pre>\n<p>\u5176\u4e2d\uff0c<code>value<\/code>\u662f\u8981\u8f49\u63db\u7684\u6578\u5b57\u6216\u65e5\u671f\uff0c<code>format_mask<\/code>\u662f\u6307\u5b9a\u683c\u5f0f\u7684\u5b57\u7b26\u4e32\u3002\u5c0d\u65bc\u6578\u5b57\uff0c\u683c\u5f0f\u63a9\u78bc\u53ef\u4ee5\u7528\u4f86\u5b9a\u7fa9\u5c0f\u6578\u9ede\u7684\u4f4d\u6578\u3001\u5343\u4f4d\u5206\u9694\u7b26\u7b49\u3002<\/p>\n<h2 id=\"%e6%8e%a7%e5%88%b6%e5%b0%8f%e6%95%b8%e9%bb%9e%e4%bd%8d%e6%95%b8-fTeOdLnnCE\">\u63a7\u5236\u5c0f\u6578\u9ede\u4f4d\u6578<\/h2>\n<p>\u5728\u4f7f\u7528<code>TO_CHAR<\/code>\u51fd\u6578\u6642\uff0c\u53ef\u4ee5\u901a\u904e\u683c\u5f0f\u63a9\u78bc\u4f86\u63a7\u5236\u5c0f\u6578\u9ede\u7684\u4f4d\u6578\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u683c\u5f0f\u63a9\u78bc\u793a\u4f8b\uff1a<\/p>\n<ul>\n<li><code>FM9999999.99<\/code>\uff1a\u9019\u500b\u683c\u5f0f\u63a9\u78bc\u6703\u5c07\u6578\u5b57\u8f49\u63db\u70ba\u6700\u591a\u5169\u4f4d\u5c0f\u6578\u7684\u683c\u5f0f\uff0c\u4e26\u4e14\u4e0d\u6703\u986f\u793a\u524d\u5c0e\u96f6\u3002<\/li>\n<li><code>9999.99<\/code>\uff1a\u9019\u500b\u683c\u5f0f\u63a9\u78bc\u6703\u5c07\u6578\u5b57\u8f49\u63db\u70ba\u6700\u591a\u5169\u4f4d\u5c0f\u6578\u7684\u683c\u5f0f\uff0c\u4e26\u4e14\u6703\u986f\u793a\u524d\u5c0e\u7a7a\u683c\u3002<\/li>\n<li><code>9999.00<\/code>\uff1a\u9019\u500b\u683c\u5f0f\u63a9\u78bc\u6703\u5c07\u6578\u5b57\u8f49\u63db\u70ba\u5169\u4f4d\u5c0f\u6578\u7684\u683c\u5f0f\uff0c\u4e26\u4e14\u6703\u986f\u793a\u524d\u5c0e\u7a7a\u683c\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%a4%ba%e4%be%8b-fTeOdLnnCE\">\u793a\u4f8b<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4f7f\u7528<code>TO_CHAR<\/code>\u51fd\u6578\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT TO_CHAR(1234.5678, 'FM9999.99') AS formatted_number FROM dual;<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de<code>1234.57<\/code>\uff0c\u56e0\u70ba\u5b83\u5c07\u6578\u5b57\u56db\u6368\u4e94\u5165\u5230\u5169\u4f4d\u5c0f\u6578\u3002<\/p>\n<pre><code>SELECT TO_CHAR(1234.5, '9999.00') AS formatted_number FROM dual;<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de<code>1234.50<\/code>\uff0c\u56e0\u70ba\u5b83\u5f37\u5236\u986f\u793a\u5169\u4f4d\u5c0f\u6578\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8to_char%e5%87%bd%e6%95%b8%e7%9a%84%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-fTeOdLnnCE\">\u4f7f\u7528TO_CHAR\u51fd\u6578\u7684\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528<code>TO_CHAR<\/code>\u51fd\u6578\u6642\uff0c\u6709\u5e7e\u9ede\u9700\u8981\u6ce8\u610f\uff1a<\/p>\n<ul>\n<li>\u683c\u5f0f\u63a9\u78bc\u7684\u8a2d\u7f6e\u6703\u5f71\u97ff\u8f38\u51fa\u7684\u7d50\u679c\uff0c\u56e0\u6b64\u5728\u8a2d\u7f6e\u6642\u9700\u8981\u6839\u64da\u5be6\u969b\u9700\u6c42\u9032\u884c\u8abf\u6574\u3002<\/li>\n<li>\u5982\u679c\u6578\u5b57\u7684\u4f4d\u6578\u8d85\u904e\u4e86\u683c\u5f0f\u63a9\u78bc\u7684\u9650\u5236\uff0c\u5247\u6703\u5c0e\u81f4\u6578\u64da\u622a\u65b7\u6216\u986f\u793a\u4e0d\u6b63\u78ba\u3002<\/li>\n<li>\u5728\u9032\u884c\u6578\u5b57\u683c\u5f0f\u5316\u6642\uff0c\u61c9\u8003\u616e\u5230\u6578\u64da\u7684\u53ef\u8b80\u6027\u548c\u4e00\u81f4\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-fTeOdLnnCE\">\u7e3d\u7d50<\/h2>\n<p>Oracle\u7684<code>TO_CHAR<\/code>\u51fd\u6578\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u5c07\u6578\u5b57\u8f49\u63db\u70ba\u6240\u9700\u7684\u5b57\u7b26\u683c\u5f0f\uff0c\u4e26\u63a7\u5236\u5c0f\u6578\u9ede\u7684\u4f4d\u6578\u3002\u901a\u904e\u5408\u7406\u4f7f\u7528\u683c\u5f0f\u63a9\u78bc\uff0c\u7528\u6236\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u986f\u793a\u7b26\u5408\u696d\u52d9\u9700\u6c42\u3002\u5728\u9078\u64c7\u5408\u9069\u7684<code>TO_CHAR<\/code>\u683c\u5f0f\u6642\uff0c\u8003\u616e\u5230\u6578\u64da\u7684\u53ef\u8b80\u6027\u548c\u4e00\u81f4\u6027\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc<code>TO_CHAR<\/code>\u51fd\u6578\u6216\u5176\u4ed6Oracle\u6578\u64da\u5eab\u529f\u80fd\u6709\u9032\u4e00\u6b65\u7684\u8208\u8da3\uff0c\u60a8\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u6211\u5011\u7684<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u670d\u52d9\u4f86\u9032\u884c\u5be6\u9a57\u548c\u958b\u767c\uff0c\u9019\u5c07\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u74b0\u5883\u4f86\u63a2\u7d22\u66f4\u591a\u7684\u6578\u64da\u5eab\u6280\u8853\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3Oracle\u51fd\u6578to_char\u5982\u4f55\u8f49\u5316\u6578\u5b57\u70ba\u6307\u5b9a\u5c0f\u6578\u9ede\u4f4d\u6578\uff0c\u63d0\u5347\u6578\u64da\u683c\u5f0f\u5316\u7684\u9748\u6d3b\u6027\u8207\u6e96\u78ba\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-95168","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95168","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=95168"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95168\/revisions"}],"predecessor-version":[{"id":95169,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95168\/revisions\/95169"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=95168"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=95168"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=95168"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}