{"id":60995,"date":"2024-10-13T07:33:16","date_gmt":"2024-10-12T23:33:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/60995\/"},"modified":"2024-10-13T07:33:16","modified_gmt":"2024-10-12T23:33:16","slug":"db2%e4%b8%ad%e6%99%82%e9%96%93%e5%92%8c%e6%97%a5%e6%9c%9f%e5%87%bd%e6%95%b8%e7%9a%84%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/60995\/","title":{"rendered":"DB2\u4e2d\u6642\u9593\u548c\u65e5\u671f\u51fd\u6578\u7684\u4f7f\u7528"},"content":{"rendered":"<h1 id=\"db2%e4%b8%ad%e6%99%82%e9%96%93%e5%92%8c%e6%97%a5%e6%9c%9f%e5%87%bd%e6%95%b8%e7%9a%84%e4%bd%bf%e7%94%a8-SLYwqsElED\">DB2\u4e2d\u6642\u9593\u548c\u65e5\u671f\u51fd\u6578\u7684\u4f7f\u7528<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u6642\u9593\u548c\u65e5\u671f\u7684\u8655\u7406\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u5c24\u5176\u662f\u5728\u9032\u884c\u6578\u64da\u5206\u6790\u548c\u5831\u544a\u6642\u3002IBM\u7684DB2\u8cc7\u6599\u5eab\u63d0\u4f9b\u4e86\u591a\u7a2e\u6642\u9593\u548c\u65e5\u671f\u51fd\u6578\uff0c\u9019\u4e9b\u51fd\u6578\u53ef\u4ee5\u5e6b\u52a9\u7528\u6236\u6709\u6548\u5730\u8655\u7406\u548c\u64cd\u4f5c\u6642\u9593\u53ca\u65e5\u671f\u6578\u64da\u3002\u672c\u6587\u5c07\u4ecb\u7d39DB2\u4e2d\u5e38\u7528\u7684\u6642\u9593\u548c\u65e5\u671f\u51fd\u6578\u53ca\u5176\u4f7f\u7528\u65b9\u6cd5\u3002<\/p>\n<h2 id=\"1-%e4%b8%bb%e8%a6%81%e7%9a%84%e6%99%82%e9%96%93%e5%92%8c%e6%97%a5%e6%9c%9f%e5%87%bd%e6%95%b8-SLYwqsElED\">1. \u4e3b\u8981\u7684\u6642\u9593\u548c\u65e5\u671f\u51fd\u6578<\/h2>\n<p>DB2\u63d0\u4f9b\u4e86\u591a\u7a2e\u51fd\u6578\u4f86\u8655\u7406\u6642\u9593\u548c\u65e5\u671f\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u51fd\u6578\uff1a<\/p>\n<ul>\n<li><code>CURRENT DATE<\/code>\uff1a\u8fd4\u56de\u7576\u524d\u7684\u65e5\u671f\u3002<\/li>\n<li><code>CURRENT TIME<\/code>\uff1a\u8fd4\u56de\u7576\u524d\u7684\u6642\u9593\u3002<\/li>\n<li><code>CURRENT TIMESTAMP<\/code>\uff1a\u8fd4\u56de\u7576\u524d\u7684\u65e5\u671f\u548c\u6642\u9593\u3002<\/li>\n<li><code>DATE<\/code>\uff1a\u5c07\u5b57\u7b26\u4e32\u8f49\u63db\u70ba\u65e5\u671f\u683c\u5f0f\u3002<\/li>\n<li><code>TIME<\/code>\uff1a\u5c07\u5b57\u7b26\u4e32\u8f49\u63db\u70ba\u6642\u9593\u683c\u5f0f\u3002<\/li>\n<li><code>TIMESTAMP<\/code>\uff1a\u5c07\u5b57\u7b26\u4e32\u8f49\u63db\u70ba\u6642\u9593\u6233\u683c\u5f0f\u3002<\/li>\n<li><code>ADD_DAYS<\/code>\uff1a\u5c07\u6307\u5b9a\u7684\u5929\u6578\u52a0\u5230\u65e5\u671f\u4e0a\u3002<\/li>\n<li><code>SUBSTR<\/code>\uff1a\u5f9e\u65e5\u671f\u6216\u6642\u9593\u4e2d\u63d0\u53d6\u7279\u5b9a\u90e8\u5206\u3002<\/li>\n<\/ul>\n<h2 id=\"2-%e4%bd%bf%e7%94%a8%e7%a4%ba%e4%be%8b-SLYwqsElED\">2. \u4f7f\u7528\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u4f7f\u7528\u793a\u4f8b\uff0c\u5e6b\u52a9\u7528\u6236\u66f4\u597d\u5730\u7406\u89e3\u9019\u4e9b\u51fd\u6578\u7684\u7528\u6cd5\uff1a<\/p>\n<h3 id=\"2-1-%e7%8d%b2%e5%8f%96%e7%95%b6%e5%89%8d%e6%97%a5%e6%9c%9f%e5%92%8c%e6%99%82%e9%96%93-SLYwqsElED\">2.1 \u7372\u53d6\u7576\u524d\u65e5\u671f\u548c\u6642\u9593<\/h3>\n<pre><code>\nSELECT CURRENT DATE AS \"\u7576\u524d\u65e5\u671f\",\n       CURRENT TIME AS \"\u7576\u524d\u6642\u9593\",\n       CURRENT TIMESTAMP AS \"\u7576\u524d\u6642\u9593\u6233\"\nFROM SYSIBM.SYSDUMMY1;\n<\/code><\/pre>\n<p>\u9019\u6bb5\u67e5\u8a62\u5c07\u8fd4\u56de\u7576\u524d\u7684\u65e5\u671f\u3001\u6642\u9593\u548c\u6642\u9593\u6233\u3002<\/p>\n<h3 id=\"2-2-%e6%97%a5%e6%9c%9f%e8%bd%89%e6%8f%9b-SLYwqsElED\">2.2 \u65e5\u671f\u8f49\u63db<\/h3>\n<pre><code>\nSELECT DATE('2023-10-01') AS \"\u8f49\u63db\u5f8c\u7684\u65e5\u671f\",\n       TIME('14:30:00') AS \"\u8f49\u63db\u5f8c\u7684\u6642\u9593\",\n       TIMESTAMP('2023-10-01 14:30:00') AS \"\u8f49\u63db\u5f8c\u7684\u6642\u9593\u6233\"\nFROM SYSIBM.SYSDUMMY1;\n<\/code><\/pre>\n<p>\u9019\u6bb5\u67e5\u8a62\u5c07\u5b57\u7b26\u4e32\u8f49\u63db\u70ba\u76f8\u61c9\u7684\u65e5\u671f\u3001\u6642\u9593\u548c\u6642\u9593\u6233\u683c\u5f0f\u3002<\/p>\n<h3 id=\"2-3-%e6%97%a5%e6%9c%9f%e5%8a%a0%e6%b8%9b%e6%93%8d%e4%bd%9c-SLYwqsElED\">2.3 \u65e5\u671f\u52a0\u6e1b\u64cd\u4f5c<\/h3>\n<pre><code>\nSELECT CURRENT DATE AS \"\u7576\u524d\u65e5\u671f\",\n       ADD_DAYS(CURRENT DATE, 10) AS \"10\u5929\u5f8c\u7684\u65e5\u671f\",\n       ADD_DAYS(CURRENT DATE, -5) AS \"5\u5929\u524d\u7684\u65e5\u671f\"\nFROM SYSIBM.SYSDUMMY1;\n<\/code><\/pre>\n<p>\u9019\u6bb5\u67e5\u8a62\u5c55\u793a\u4e86\u5982\u4f55\u5728\u7576\u524d\u65e5\u671f\u4e0a\u52a0\u4e0a\u6216\u6e1b\u53bb\u5929\u6578\u3002<\/p>\n<h3 id=\"2-4-%e6%8f%90%e5%8f%96%e6%97%a5%e6%9c%9f%e9%83%a8%e5%88%86-SLYwqsElED\">2.4 \u63d0\u53d6\u65e5\u671f\u90e8\u5206<\/h3>\n<pre><code>\nSELECT CURRENT DATE AS \"\u7576\u524d\u65e5\u671f\",\n       YEAR(CURRENT DATE) AS \"\u5e74\u4efd\",\n       MONTH(CURRENT DATE) AS \"\u6708\u4efd\",\n       DAY(CURRENT DATE) AS \"\u65e5\u671f\"\nFROM SYSIBM.SYSDUMMY1;\n<\/code><\/pre>\n<p>\u9019\u6bb5\u67e5\u8a62\u5c55\u793a\u4e86\u5982\u4f55\u5f9e\u7576\u524d\u65e5\u671f\u4e2d\u63d0\u53d6\u5e74\u4efd\u3001\u6708\u4efd\u548c\u65e5\u671f\u3002<\/p>\n<h2 id=\"3-%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-SLYwqsElED\">3. \u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528DB2\u7684\u6642\u9593\u548c\u65e5\u671f\u51fd\u6578\u6642\uff0c\u9700\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u65e5\u671f\u548c\u6642\u9593\u7684\u683c\u5f0f\u6b63\u78ba\uff0c\u4ee5\u907f\u514d\u8f49\u63db\u932f\u8aa4\u3002<\/li>\n<li>\u5728\u9032\u884c\u65e5\u671f\u8a08\u7b97\u6642\uff0c\u6ce8\u610f\u6642\u5340\u7684\u5f71\u97ff\u3002<\/li>\n<li>\u4f7f\u7528\u5408\u9069\u7684\u51fd\u6578\u4f86\u6eff\u8db3\u7279\u5b9a\u7684\u9700\u6c42\uff0c\u4f8b\u5982\u63d0\u53d6\u7279\u5b9a\u7684\u65e5\u671f\u90e8\u5206\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-SLYwqsElED\">\u7e3d\u7d50<\/h2>\n<p>DB2\u63d0\u4f9b\u4e86\u591a\u7a2e\u5f37\u5927\u7684\u6642\u9593\u548c\u65e5\u671f\u51fd\u6578\uff0c\u9019\u4e9b\u51fd\u6578\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u6709\u6548\u5730\u8655\u7406\u548c\u5206\u6790\u6642\u9593\u53ca\u65e5\u671f\u6578\u64da\u3002\u7121\u8ad6\u662f\u7372\u53d6\u7576\u524d\u6642\u9593\u3001\u9032\u884c\u65e5\u671f\u8f49\u63db\uff0c\u9084\u662f\u9032\u884c\u65e5\u671f\u8a08\u7b97\uff0cDB2\u90fd\u80fd\u63d0\u4f9b\u76f8\u61c9\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u5c0d\u65bc\u9700\u8981\u5728\u9999\u6e2f\u9032\u884c\u6578\u64da\u8655\u7406\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\u53ef\u4ee5\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u5b89\u5168\u548c\u9ad8\u6548\u8655\u7406\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22DB2\u4e2d\u6642\u9593\u548c\u65e5\u671f\u51fd\u6578\u7684\u4f7f\u7528\uff0c\u4e86\u89e3\u5982\u4f55\u6709\u6548\u8655\u7406\u548c\u64cd\u4f5c\u6642\u9593\u65e5\u671f\u6578\u64da\u4ee5\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\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-60995","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60995","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=60995"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60995\/revisions"}],"predecessor-version":[{"id":60996,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60995\/revisions\/60996"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=60995"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=60995"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=60995"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}