{"id":181688,"date":"2024-11-09T19:10:19","date_gmt":"2024-11-09T11:10:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/181688\/"},"modified":"2024-11-09T19:10:20","modified_gmt":"2024-11-09T11:10:20","slug":"%e6%b7%b1%e5%85%a5%e6%8e%a2%e7%a9%b6oracle%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84number%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e8%88%87c%e8%aa%9e%e8%a8%80%e7%9a%84%e9%97%9c%e8%81%af%e6%80%a7%ef%bc%88oracle","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/181688\/","title":{"rendered":"\u6df1\u5165\u63a2\u7a76Oracle\u6578\u64da\u5eab\u7684Number\u6578\u64da\u985e\u578b\u8207C\u8a9e\u8a00\u7684\u95dc\u806f\u6027\uff08oracle\u6578\u64da\u5eabnumber\u548cc\uff09"},"content":{"rendered":"<h1 id=\"%e6%b7%b1%e5%85%a5%e6%8e%a2%e7%a9%b6oracle%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84number%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e8%88%87c%e8%aa%9e%e8%a8%80%e7%9a%84%e9%97%9c%e8%81%af%e6%80%a7-ttjZFvAZtT\">\u6df1\u5165\u63a2\u7a76Oracle\u6578\u64da\u5eab\u7684Number\u6578\u64da\u985e\u578b\u8207C\u8a9e\u8a00\u7684\u95dc\u806f\u6027<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u6578\u64da\u985e\u578b\u7684\u9078\u64c7\u5c0d\u65bc\u6578\u64da\u7684\u5b58\u5132\u548c\u8655\u7406\u81f3\u95dc\u91cd\u8981\u3002Oracle\u6578\u64da\u5eab\u4e2d\u7684Number\u6578\u64da\u985e\u578b\u662f\u4e00\u500b\u9748\u6d3b\u4e14\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5b58\u5132\u5404\u7a2e\u6578\u5b57\u6578\u64da\u3002\u800cC\u8a9e\u8a00\u4f5c\u70ba\u4e00\u7a2e\u5e95\u5c64\u7de8\u7a0b\u8a9e\u8a00\uff0c\u5247\u63d0\u4f9b\u4e86\u5c0d\u9019\u4e9b\u6578\u64da\u7684\u64cd\u4f5c\u80fd\u529b\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eOracle\u6578\u64da\u5eab\u7684Number\u6578\u64da\u985e\u578b\u53ca\u5176\u8207C\u8a9e\u8a00\u7684\u95dc\u806f\u6027\u3002<\/p>\n<h2 id=\"oracle%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84number%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-ttjZFvAZtT\">Oracle\u6578\u64da\u5eab\u7684Number\u6578\u64da\u985e\u578b<\/h2>\n<p>\u5728Oracle\u6578\u64da\u5eab\u4e2d\uff0cNumber\u6578\u64da\u985e\u578b\u7528\u65bc\u5b58\u5132\u6578\u5b57\uff0c\u7121\u8ad6\u662f\u6574\u6578\u9084\u662f\u6d6e\u9ede\u6578\u3002\u5176\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>NUMBER(p,s)<\/code><\/pre>\n<p>\u5176\u4e2d\uff0c<code>p<\/code>\u8868\u793a\u6578\u5b57\u7684\u7cbe\u5ea6\uff08\u5373\u7e3d\u4f4d\u6578\uff09\uff0c\u800c<code>s<\/code>\u8868\u793a\u5c0f\u6578\u4f4d\u6578\u3002\u9019\u610f\u5473\u8457\u7528\u6236\u53ef\u4ee5\u6839\u64da\u9700\u6c42\u9748\u6d3b\u5730\u5b9a\u7fa9\u6578\u5b57\u7684\u7bc4\u570d\u3002\u4f8b\u5982\uff0c<code>NUMBER(5,2)<\/code>\u53ef\u4ee5\u5b58\u5132\u7bc4\u570d\u5728-999.99\u5230999.99\u4e4b\u9593\u7684\u6578\u5b57\u3002<\/p>\n<h3 id=\"number%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e7%9a%84%e7%89%b9%e9%bb%9e-ttjZFvAZtT\">Number\u6578\u64da\u985e\u578b\u7684\u7279\u9ede<\/h3>\n<ul>\n<li><strong>\u9748\u6d3b\u6027\uff1a<\/strong>\u53ef\u4ee5\u5b58\u5132\u6574\u6578\u548c\u6d6e\u9ede\u6578\uff0c\u4e26\u4e14\u53ef\u4ee5\u6839\u64da\u9700\u8981\u8abf\u6574\u7cbe\u5ea6\u548c\u5c0f\u6578\u4f4d\u6578\u3002<\/li>\n<li><strong>\u9ad8\u7cbe\u5ea6\uff1a<\/strong>\u9069\u5408\u9700\u8981\u9ad8\u7cbe\u5ea6\u8a08\u7b97\u7684\u61c9\u7528\uff0c\u5982\u91d1\u878d\u7cfb\u7d71\u3002<\/li>\n<li><strong>\u81ea\u52d5\u8655\u7406\uff1a<\/strong>Oracle\u6703\u81ea\u52d5\u8655\u7406\u6578\u5b57\u7684\u6ea2\u51fa\u548c\u4e0b\u6ea2\uff0c\u6e1b\u5c11\u4e86\u958b\u767c\u8005\u7684\u8ca0\u64d4\u3002<\/li>\n<\/ul>\n<h2 id=\"c%e8%aa%9e%e8%a8%80%e4%b8%ad%e7%9a%84%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-ttjZFvAZtT\">C\u8a9e\u8a00\u4e2d\u7684\u6578\u64da\u985e\u578b<\/h2>\n<p>C\u8a9e\u8a00\u63d0\u4f9b\u4e86\u591a\u7a2e\u6578\u64da\u985e\u578b\u4f86\u8655\u7406\u6578\u5b57\uff0c\u5305\u62ec\u6574\u6578\uff08<code>int<\/code>\uff09\u3001\u6d6e\u9ede\u6578\uff08<code>float<\/code>\u548c<code>double<\/code>\uff09\u7b49\u3002\u9019\u4e9b\u6578\u64da\u985e\u578b\u7684\u9078\u64c7\u53d6\u6c7a\u65bc\u6240\u9700\u7684\u7cbe\u5ea6\u548c\u7bc4\u570d\u3002\u4f8b\u5982\uff0c<code>int<\/code>\u985e\u578b\u901a\u5e38\u7528\u65bc\u5b58\u5132\u6574\u6578\uff0c\u800c<code>float<\/code>\u548c<code>double<\/code>\u5247\u7528\u65bc\u5b58\u5132\u5e36\u6709\u5c0f\u6578\u7684\u6578\u5b57\u3002<\/p>\n<h3 id=\"c%e8%aa%9e%e8%a8%80%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e7%9a%84%e7%89%b9%e9%bb%9e-ttjZFvAZtT\">C\u8a9e\u8a00\u6578\u64da\u985e\u578b\u7684\u7279\u9ede<\/h3>\n<ul>\n<li><strong>\u6548\u7387\uff1a<\/strong>C\u8a9e\u8a00\u7684\u6578\u64da\u985e\u578b\u8a2d\u8a08\u7c21\u55ae\uff0c\u80fd\u5920\u9ad8\u6548\u5730\u9032\u884c\u6578\u64da\u8655\u7406\u3002<\/li>\n<li><strong>\u9748\u6d3b\u6027\uff1a<\/strong>\u958b\u767c\u8005\u53ef\u4ee5\u6839\u64da\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u3002<\/li>\n<li><strong>\u5e95\u5c64\u63a7\u5236\uff1a<\/strong>C\u8a9e\u8a00\u5141\u8a31\u958b\u767c\u8005\u5c0d\u5167\u5b58\u9032\u884c\u7cbe\u7d30\u63a7\u5236\uff0c\u9019\u5c0d\u65bc\u6027\u80fd\u512a\u5316\u81f3\u95dc\u91cd\u8981\u3002<\/li>\n<\/ul>\n<h2 id=\"oracle-number%e8%88%87c%e8%aa%9e%e8%a8%80%e7%9a%84%e9%97%9c%e8%81%af%e6%80%a7-ttjZFvAZtT\">Oracle Number\u8207C\u8a9e\u8a00\u7684\u95dc\u806f\u6027<\/h2>\n<p>\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0cOracle\u6578\u64da\u5eab\u7684Number\u6578\u64da\u985e\u578b\u8207C\u8a9e\u8a00\u7684\u6578\u64da\u985e\u578b\u4e4b\u9593\u5b58\u5728\u8457\u5bc6\u5207\u7684\u95dc\u806f\u3002\u7576C\u8a9e\u8a00\u61c9\u7528\u7a0b\u5e8f\u9700\u8981\u8207Oracle\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u6642\uff0c\u958b\u767c\u8005\u9700\u8981\u5c07Oracle\u7684Number\u6578\u64da\u985e\u578b\u6620\u5c04\u5230C\u8a9e\u8a00\u7684\u76f8\u61c9\u6578\u64da\u985e\u578b\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u7576\u5f9eOracle\u6578\u64da\u5eab\u4e2d\u8b80\u53d6\u4e00\u500b<code>NUMBER<\/code>\u985e\u578b\u7684\u6578\u64da\u6642\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u4f7f\u7528<code>double<\/code>\u985e\u578b\u4f86\u63a5\u6536\u9019\u500b\u6578\u64da\uff0c\u56e0\u70ba<code>double<\/code>\u63d0\u4f9b\u4e86\u8db3\u5920\u7684\u7cbe\u5ea6\u4f86\u5b58\u5132\u5927\u591a\u6578\u7684\u6578\u5b57\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\n#include &lt;stdio.h&gt;\n#include &lt;stdlib.h&gt;\n#include &lt;oci.h&gt;\n\nint main() {\n    double number;\n    \/\/ \u5047\u8a2d\u5f9eOracle\u6578\u64da\u5eab\u4e2d\u8b80\u53d6\u7684\u6578\u5b57\n    number = 12345.67;\n    printf(\"\u5f9eOracle\u6578\u64da\u5eab\u8b80\u53d6\u7684\u6578\u5b57\u662f\uff1a%fn\", number);\n    return 0;\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u4f7f\u7528<code>double<\/code>\u4f86\u5b58\u5132\u5f9eOracle\u6578\u64da\u5eab\u4e2d\u8b80\u53d6\u7684<code>NUMBER<\/code>\u985e\u578b\u7684\u6578\u64da\uff0c\u4e26\u5c07\u5176\u6253\u5370\u51fa\u4f86\u3002\u9019\u7a2e\u6620\u5c04\u95dc\u4fc2\u4f7f\u5f97C\u8a9e\u8a00\u80fd\u5920\u9748\u6d3b\u5730\u8655\u7406Oracle\u6578\u64da\u5eab\u4e2d\u7684\u6578\u5b57\u6578\u64da\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-ttjZFvAZtT\">\u7d50\u8ad6<\/h2>\n<p>Oracle\u6578\u64da\u5eab\u7684Number\u6578\u64da\u985e\u578b\u8207C\u8a9e\u8a00\u4e4b\u9593\u7684\u95dc\u806f\u6027\u70ba\u958b\u767c\u8005\u63d0\u4f9b\u4e86\u9748\u6d3b\u4e14\u9ad8\u6548\u7684\u6578\u64da\u8655\u7406\u80fd\u529b\u3002\u901a\u904e\u5408\u7406\u7684\u6578\u64da\u985e\u578b\u6620\u5c04\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5728C\u8a9e\u8a00\u4e2d\u8f15\u9b06\u5730\u64cd\u4f5cOracle\u6578\u64da\u5eab\u4e2d\u7684\u6578\u5b57\u6578\u64da\uff0c\u5f9e\u800c\u5be6\u73fe\u9ad8\u6548\u7684\u61c9\u7528\u7a0b\u5e8f\u958b\u767c\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6027\u80fd\u548c\u9ad8\u7cbe\u5ea6\u7684\u61c9\u7528\uff0c\u9019\u7a2e\u95dc\u806f\u6027\u5c24\u70ba\u91cd\u8981\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc<code><a href=\"https:\/\/server.hk\">VPS<\/a><\/code>\u548c<code><a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a><\/code>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u63a2\u7a76Oracle\u6578\u64da\u5eab\u7684Number\u6578\u64da\u985e\u578b\u8207C\u8a9e\u8a00\u7684\u95dc\u806f\u6027\uff0c\u63ed\u793a\u6578\u64da\u8655\u7406\u8207\u7de8\u7a0b\u7684\u6700\u4f73\u5be6\u8e10\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-181688","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/181688","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=181688"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/181688\/revisions"}],"predecessor-version":[{"id":181689,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/181688\/revisions\/181689"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=181688"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=181688"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=181688"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}