{"id":60593,"date":"2024-10-13T04:09:17","date_gmt":"2024-10-12T20:09:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/60593\/"},"modified":"2024-10-13T04:09:17","modified_gmt":"2024-10-12T20:09:17","slug":"db2%e6%97%a5%e6%9c%9f%e6%a0%bc%e5%bc%8f%e6%9b%b4%e6%94%b9%e7%9a%84%e5%af%a6%e7%8f%be","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/60593\/","title":{"rendered":"DB2\u65e5\u671f\u683c\u5f0f\u66f4\u6539\u7684\u5be6\u73fe"},"content":{"rendered":"<h1 id=\"db2%e6%97%a5%e6%9c%9f%e6%a0%bc%e5%bc%8f%e6%9b%b4%e6%94%b9%e7%9a%84%e5%af%a6%e7%8f%be-FHASemCcfF\">DB2\u65e5\u671f\u683c\u5f0f\u66f4\u6539\u7684\u5be6\u73fe<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u65e5\u671f\u683c\u5f0f\u7684\u6b63\u78ba\u6027\u5c0d\u65bc\u6578\u64da\u7684\u6e96\u78ba\u6027\u548c\u53ef\u8b80\u6027\u81f3\u95dc\u91cd\u8981\u3002IBM\u7684DB2\u6578\u64da\u5eab\u7cfb\u7d71\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u66f4\u6539\u548c\u683c\u5f0f\u5316\u65e5\u671f\uff0c\u4ee5\u6eff\u8db3\u4e0d\u540c\u7684\u696d\u52d9\u9700\u6c42\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728DB2\u4e2d\u5be6\u73fe\u65e5\u671f\u683c\u5f0f\u7684\u66f4\u6539\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"db2%e4%b8%ad%e7%9a%84%e6%97%a5%e6%9c%9f%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-FHASemCcfF\">DB2\u4e2d\u7684\u65e5\u671f\u6578\u64da\u985e\u578b<\/h2>\n<p>\u5728DB2\u4e2d\uff0c\u65e5\u671f\u901a\u5e38\u4f7f\u7528\u4ee5\u4e0b\u6578\u64da\u985e\u578b\u4f86\u5b58\u5132\uff1a<\/p>\n<ul>\n<li><strong>DATE<\/strong>\uff1a\u7528\u65bc\u5b58\u5132\u65e5\u671f\uff08\u5e74\u3001\u6708\u3001\u65e5\uff09\u3002<\/li>\n<li><strong>TIME<\/strong>\uff1a\u7528\u65bc\u5b58\u5132\u6642\u9593\uff08\u5c0f\u6642\u3001\u5206\u9418\u3001\u79d2\uff09\u3002<\/li>\n<li><strong>TIMESTAMP<\/strong>\uff1a\u7528\u65bc\u5b58\u5132\u65e5\u671f\u548c\u6642\u9593\u7684\u7d44\u5408\u3002<\/li>\n<\/ul>\n<p>\u9019\u4e9b\u6578\u64da\u985e\u578b\u5728\u67e5\u8a62\u548c\u5831\u544a\u4e2d\u7d93\u5e38\u9700\u8981\u9032\u884c\u683c\u5f0f\u5316\uff0c\u4ee5\u4fbf\u7528\u6236\u80fd\u5920\u4ee5\u6613\u65bc\u7406\u89e3\u7684\u65b9\u5f0f\u67e5\u770b\u6578\u64da\u3002<\/p>\n<h2 id=\"%e6%9b%b4%e6%94%b9%e6%97%a5%e6%9c%9f%e6%a0%bc%e5%bc%8f%e7%9a%84%e6%96%b9%e6%b3%95-FHASemCcfF\">\u66f4\u6539\u65e5\u671f\u683c\u5f0f\u7684\u65b9\u6cd5<\/h2>\n<p>\u5728DB2\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u7a2e\u51fd\u6578\u4f86\u66f4\u6539\u65e5\u671f\u7684\u683c\u5f0f\u3002\u6700\u5e38\u7528\u7684\u51fd\u6578\u5305\u62ec\uff1a<\/p>\n<h3 id=\"1-char%e5%87%bd%e6%95%b8-FHASemCcfF\">1. CHAR\u51fd\u6578<\/h3>\n<p>CHAR\u51fd\u6578\u53ef\u4ee5\u5c07\u65e5\u671f\u8f49\u63db\u70ba\u5b57\u7b26\u683c\u5f0f\uff0c\u4e26\u5141\u8a31\u6307\u5b9a\u683c\u5f0f\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528CHAR\u51fd\u6578\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT CHAR(CURRENT DATE, ISO) AS Formatted_Date FROM SYSIBM.SYSDUMMY1;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0cCURRENT DATE\u8fd4\u56de\u7576\u524d\u65e5\u671f\uff0cISO\u6307\u5b9a\u4e86ISO\u6a19\u6e96\u7684\u65e5\u671f\u683c\u5f0f\u3002<\/p>\n<h3 id=\"2-varchar_format%e5%87%bd%e6%95%b8-FHASemCcfF\">2. VARCHAR_FORMAT\u51fd\u6578<\/h3>\n<p>VARCHAR_FORMAT\u51fd\u6578\u63d0\u4f9b\u4e86\u66f4\u5927\u7684\u9748\u6d3b\u6027\uff0c\u5141\u8a31\u7528\u6236\u81ea\u5b9a\u7fa9\u65e5\u671f\u683c\u5f0f\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528VARCHAR_FORMAT\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT VARCHAR_FORMAT(CURRENT DATE, 'YYYY-MM-DD') AS Formatted_Date FROM SYSIBM.SYSDUMMY1;<\/code><\/pre>\n<p>\u9019\u88e1\uff0c&#8217;YYYY-MM-DD&#8217;\u6307\u5b9a\u4e86\u6240\u9700\u7684\u65e5\u671f\u683c\u5f0f\uff0c\u7d50\u679c\u5c07\u986f\u793a\u70ba\u201c2023-10-01\u201d\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8to_date%e5%87%bd%e6%95%b8-FHASemCcfF\">3. \u4f7f\u7528TO_DATE\u51fd\u6578<\/h3>\n<p>\u5982\u679c\u9700\u8981\u5c07\u5b57\u7b26\u4e32\u8f49\u63db\u70ba\u65e5\u671f\u683c\u5f0f\uff0c\u53ef\u4ee5\u4f7f\u7528TO_DATE\u51fd\u6578\u3002\u4ee5\u4e0b\u662f\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT TO_DATE('2023-10-01', 'YYYY-MM-DD') AS Converted_Date FROM SYSIBM.SYSDUMMY1;<\/code><\/pre>\n<p>\u9019\u5c07\u628a\u5b57\u7b26\u4e32&#8217;2023-10-01&#8217;\u8f49\u63db\u70baDATE\u985e\u578b\u3002<\/p>\n<h2 id=\"%e6%97%a5%e6%9c%9f%e6%a0%bc%e5%bc%8f%e6%9b%b4%e6%94%b9%e7%9a%84%e5%af%a6%e9%9a%9b%e6%87%89%e7%94%a8-FHASemCcfF\">\u65e5\u671f\u683c\u5f0f\u66f4\u6539\u7684\u5be6\u969b\u61c9\u7528<\/h2>\n<p>\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u65e5\u671f\u683c\u5f0f\u7684\u66f4\u6539\u901a\u5e38\u7528\u65bc\u5831\u544a\u751f\u6210\u548c\u6578\u64da\u5206\u6790\u3002\u4f8b\u5982\uff0c\u5728\u751f\u6210\u92b7\u552e\u5831\u544a\u6642\uff0c\u53ef\u80fd\u9700\u8981\u5c07\u65e5\u671f\u683c\u5f0f\u66f4\u6539\u70ba\u201cDD\/MM\/YYYY\u201d\u4ee5\u7b26\u5408\u7576\u5730\u7684\u5546\u696d\u6163\u4f8b\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT VARCHAR_FORMAT(SALE_DATE, 'DD\/MM\/YYYY') AS Sale_Date FROM SALES_TABLE;<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u5831\u544a\u4e2d\u7684\u65e5\u671f\u683c\u5f0f\u7b26\u5408\u7528\u6236\u7684\u671f\u671b\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-FHASemCcfF\">\u7d50\u8ad6<\/h2>\n<p>\u5728DB2\u4e2d\uff0c\u66f4\u6539\u65e5\u671f\u683c\u5f0f\u662f\u4e00\u500b\u91cd\u8981\u7684\u64cd\u4f5c\uff0c\u80fd\u5920\u63d0\u9ad8\u6578\u64da\u7684\u53ef\u8b80\u6027\u548c\u53ef\u7528\u6027\u3002\u901a\u904e\u4f7f\u7528CHAR\u3001VARCHAR_FORMAT\u548cTO_DATE\u7b49\u51fd\u6578\uff0c\u958b\u767c\u4eba\u54e1\u53ef\u4ee5\u9748\u6d3b\u5730\u8655\u7406\u65e5\u671f\u6578\u64da\uff0c\u4ee5\u6eff\u8db3\u4e0d\u540c\u7684\u696d\u52d9\u9700\u6c42\u3002\u4e86\u89e3\u9019\u4e9b\u51fd\u6578\u7684\u4f7f\u7528\u65b9\u6cd5\u5c07\u6709\u52a9\u65bc\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\u66f4\u6709\u6548\u5730\u8655\u7406\u65e5\u671f\u4fe1\u606f\u3002<\/p>\n<p>\u5982\u9700\u9032\u4e00\u6b65\u4e86\u89e3\u6709\u95dc\u6578\u64da\u5eab\u7ba1\u7406\u548c\u5176\u4ed6\u6280\u8853\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9 <a href=\"https:\/\/server.hk\">Server.HK<\/a>\uff0c\u6211\u5011\u63d0\u4f9b\u5404\u7a2e <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u5e6b\u52a9\u60a8\u66f4\u597d\u5730\u7ba1\u7406\u60a8\u7684\u6578\u64da\u548c\u61c9\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728DB2\u4e2d\u5be6\u73fe\u65e5\u671f\u683c\u5f0f\u66f4\u6539\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\uff0c\u78ba\u4fdd\u517c\u5bb9\u6027\u8207\u6e96\u78ba\u6027\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-60593","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60593","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=60593"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60593\/revisions"}],"predecessor-version":[{"id":60594,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60593\/revisions\/60594"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=60593"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=60593"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=60593"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}