{"id":60881,"date":"2024-10-13T06:36:14","date_gmt":"2024-10-12T22:36:14","guid":{"rendered":"https:\/\/server.hk\/cnblog\/60881\/"},"modified":"2024-10-13T06:36:14","modified_gmt":"2024-10-12T22:36:14","slug":"db2%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e6%99%82%e9%96%93%e5%87%bd%e7%b8%bd%e7%b5%90","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/60881\/","title":{"rendered":"DB2\u6578\u64da\u5eab\u4e2d\u6642\u9593\u51fd\u7e3d\u7d50"},"content":{"rendered":"<h1 id=\"db2%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e6%99%82%e9%96%93%e5%87%bd%e6%95%b8%e7%b8%bd%e7%b5%90-VsfyBGsdaa\">DB2\u6578\u64da\u5eab\u4e2d\u6642\u9593\u51fd\u6578\u7e3d\u7d50<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u6642\u9593\u51fd\u6578\u662f\u8655\u7406\u65e5\u671f\u548c\u6642\u9593\u6578\u64da\u7684\u91cd\u8981\u5de5\u5177\u3002IBM\u7684DB2\u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u5f37\u5927\u7684\u6642\u9593\u51fd\u6578\uff0c\u9019\u4e9b\u51fd\u6578\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u9032\u884c\u6642\u9593\u8a08\u7b97\u3001\u683c\u5f0f\u5316\u548c\u6bd4\u8f03\u7b49\u64cd\u4f5c\u3002\u672c\u6587\u5c07\u5c0dDB2\u4e2d\u7684\u6642\u9593\u51fd\u6578\u9032\u884c\u7e3d\u7d50\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u3002<\/p>\n<h2 id=\"1-db2%e4%b8%ad%e7%9a%84%e6%99%82%e9%96%93%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-VsfyBGsdaa\">1. DB2\u4e2d\u7684\u6642\u9593\u6578\u64da\u985e\u578b<\/h2>\n<p>\u5728DB2\u4e2d\uff0c\u4e3b\u8981\u6709\u4e09\u7a2e\u6642\u9593\u76f8\u95dc\u7684\u6578\u64da\u985e\u578b\uff1a<\/p>\n<ul>\n<li><strong>DATE<\/strong>\uff1a\u8868\u793a\u65e5\u671f\uff0c\u683c\u5f0f\u70baYYYY-MM-DD\u3002<\/li>\n<li><strong>TIME<\/strong>\uff1a\u8868\u793a\u6642\u9593\uff0c\u683c\u5f0f\u70baHH:MM:SS\u3002<\/li>\n<li><strong>TIMESTAMP<\/strong>\uff1a\u8868\u793a\u65e5\u671f\u548c\u6642\u9593\u7684\u7d44\u5408\uff0c\u683c\u5f0f\u70baYYYY-MM-DD HH:MM:SS\u3002<\/li>\n<\/ul>\n<h2 id=\"2-%e5%b8%b8%e7%94%a8%e7%9a%84%e6%99%82%e9%96%93%e5%87%bd%e6%95%b8-VsfyBGsdaa\">2. \u5e38\u7528\u7684\u6642\u9593\u51fd\u6578<\/h2>\n<p>DB2\u63d0\u4f9b\u4e86\u591a\u7a2e\u6642\u9593\u51fd\u6578\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u51fd\u6578\uff1a<\/p>\n<h3 id=\"2-1-current-date-VsfyBGsdaa\">2.1 CURRENT DATE<\/h3>\n<p>\u8a72\u51fd\u6578\u8fd4\u56de\u7576\u524d\u7684\u65e5\u671f\u3002<\/p>\n<pre><code>SELECT CURRENT DATE FROM SYSIBM.SYSDUMMY1;<\/code><\/pre>\n<h3 id=\"2-2-current-time-VsfyBGsdaa\">2.2 CURRENT TIME<\/h3>\n<p>\u8a72\u51fd\u6578\u8fd4\u56de\u7576\u524d\u7684\u6642\u9593\u3002<\/p>\n<pre><code>SELECT CURRENT TIME FROM SYSIBM.SYSDUMMY1;<\/code><\/pre>\n<h3 id=\"2-3-current-timestamp-VsfyBGsdaa\">2.3 CURRENT TIMESTAMP<\/h3>\n<p>\u8a72\u51fd\u6578\u8fd4\u56de\u7576\u524d\u7684\u65e5\u671f\u548c\u6642\u9593\u3002<\/p>\n<pre><code>SELECT CURRENT TIMESTAMP FROM SYSIBM.SYSDUMMY1;<\/code><\/pre>\n<h3 id=\"2-4-add-days-VsfyBGsdaa\">2.4 ADD DAYS<\/h3>\n<p>\u8a72\u51fd\u6578\u7528\u65bc\u5728\u6307\u5b9a\u65e5\u671f\u4e0a\u6dfb\u52a0\u5929\u6578\u3002<\/p>\n<pre><code>SELECT ADD DAYS('2023-01-01', 10) AS NEW_DATE;<\/code><\/pre>\n<h3 id=\"2-5-datediff-VsfyBGsdaa\">2.5 DATEDIFF<\/h3>\n<p>\u8a72\u51fd\u6578\u7528\u65bc\u8a08\u7b97\u5169\u500b\u65e5\u671f\u4e4b\u9593\u7684\u5929\u6578\u5dee\u3002<\/p>\n<pre><code>SELECT DATEDIFF(DAY, '2023-01-01', '2023-01-10') AS DIFF;<\/code><\/pre>\n<h3 id=\"2-6-timezone-VsfyBGsdaa\">2.6 TIMEZONE<\/h3>\n<p>\u8a72\u51fd\u6578\u7528\u65bc\u7372\u53d6\u7576\u524d\u7684\u6642\u5340\u3002<\/p>\n<pre><code>SELECT CURRENT TIMEZONE FROM SYSIBM.SYSDUMMY1;<\/code><\/pre>\n<h2 id=\"3-%e6%99%82%e9%96%93%e5%87%bd%e6%95%b8%e7%9a%84%e6%87%89%e7%94%a8%e5%a0%b4%e6%99%af-VsfyBGsdaa\">3. \u6642\u9593\u51fd\u6578\u7684\u61c9\u7528\u5834\u666f<\/h2>\n<p>\u6642\u9593\u51fd\u6578\u5728\u6578\u64da\u5eab\u7684\u61c9\u7528\u4e2d\u975e\u5e38\u5ee3\u6cdb\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u61c9\u7528\u5834\u666f\uff1a<\/p>\n<ul>\n<li><strong>\u5831\u544a\u751f\u6210<\/strong>\uff1a\u5728\u751f\u6210\u5831\u544a\u6642\uff0c\u7d93\u5e38\u9700\u8981\u6839\u64da\u7576\u524d\u65e5\u671f\u6216\u6642\u9593\u4f86\u7be9\u9078\u6578\u64da\u3002<\/li>\n<li><strong>\u6578\u64da\u5206\u6790<\/strong>\uff1a\u5728\u9032\u884c\u6578\u64da\u5206\u6790\u6642\uff0c\u6642\u9593\u51fd\u6578\u53ef\u4ee5\u5e6b\u52a9\u5206\u6790\u4e0d\u540c\u6642\u9593\u6bb5\u5167\u7684\u6578\u64da\u8b8a\u5316\u3002<\/li>\n<li><strong>\u4e8b\u4ef6\u8a18\u9304<\/strong>\uff1a\u5728\u8a18\u9304\u4e8b\u4ef6\u6642\uff0c\u901a\u5e38\u9700\u8981\u8a18\u9304\u4e8b\u4ef6\u767c\u751f\u7684\u5177\u9ad4\u6642\u9593\u3002<\/li>\n<\/ul>\n<h2 id=\"4-%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-VsfyBGsdaa\">4. \u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528DB2\u7684\u6642\u9593\u51fd\u6578\u6642\uff0c\u6709\u5e7e\u9ede\u9700\u8981\u6ce8\u610f\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u4f7f\u7528\u6b63\u78ba\u7684\u6578\u64da\u985e\u578b\uff0c\u4ee5\u907f\u514d\u985e\u578b\u4e0d\u5339\u914d\u7684\u932f\u8aa4\u3002<\/li>\n<li>\u5728\u9032\u884c\u6642\u9593\u8a08\u7b97\u6642\uff0c\u6ce8\u610f\u6642\u5340\u7684\u5f71\u97ff\u3002<\/li>\n<li>\u5c0d\u65bc\u5927\u6578\u64da\u91cf\u7684\u6642\u9593\u67e5\u8a62\uff0c\u5efa\u8b70\u5efa\u7acb\u7d22\u5f15\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-VsfyBGsdaa\">\u7e3d\u7d50<\/h2>\n<p>DB2\u6578\u64da\u5eab\u4e2d\u7684\u6642\u9593\u51fd\u6578\u70ba\u7528\u6236\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u5de5\u5177\u4f86\u8655\u7406\u65e5\u671f\u548c\u6642\u9593\u6578\u64da\u3002\u901a\u904e\u4f7f\u7528\u9019\u4e9b\u51fd\u6578\uff0c\u7528\u6236\u53ef\u4ee5\u8f15\u9b06\u5730\u9032\u884c\u6642\u9593\u8a08\u7b97\u548c\u6578\u64da\u5206\u6790\u3002\u7121\u8ad6\u662f\u5728\u5831\u544a\u751f\u6210\u3001\u6578\u64da\u5206\u6790\u9084\u662f\u4e8b\u4ef6\u8a18\u9304\u4e2d\uff0c\u6642\u9593\u51fd\u6578\u90fd\u80fd\u767c\u63ee\u91cd\u8981\u4f5c\u7528\u3002\u5982\u679c\u60a8\u9700\u8981\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u4f86\u652f\u6301\u60a8\u7684\u696d\u52d9\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22DB2\u6578\u64da\u5eab\u4e2d\u7684\u6642\u9593\u51fd\u6578\uff0c\u4e86\u89e3\u5176\u7528\u6cd5\u3001\u7279\u6027\u53ca\u6700\u4f73\u5be6\u8e10\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\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-60881","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60881","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=60881"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60881\/revisions"}],"predecessor-version":[{"id":60882,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60881\/revisions\/60882"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=60881"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=60881"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=60881"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}