{"id":95336,"date":"2024-10-20T00:12:19","date_gmt":"2024-10-19T16:12:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/95336\/"},"modified":"2024-10-20T00:12:19","modified_gmt":"2024-10-19T16:12:19","slug":"oracle%e6%99%82%e9%96%93%e5%8a%a0%e6%b8%9b%e7%9a%84%e8%aa%9e%e5%8f%a5%e5%af%ab%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/95336\/","title":{"rendered":"Oracle\u6642\u9593\u52a0\u6e1b\u7684\u8a9e\u53e5\u5beb\u6cd5"},"content":{"rendered":"<h1 id=\"oracle%e6%99%82%e9%96%93%e5%8a%a0%e6%b8%9b%e7%9a%84%e8%aa%9e%e5%8f%a5%e5%af%ab%e6%b3%95-oqPAgfFZCw\">Oracle\u6642\u9593\u52a0\u6e1b\u7684\u8a9e\u53e5\u5beb\u6cd5<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u4e2d\uff0c\u6642\u9593\u7684\u8655\u7406\u662f\u4e00\u500b\u91cd\u8981\u7684\u8ab2\u984c\u3002Oracle\u8cc7\u6599\u5eab\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u9032\u884c\u6642\u9593\u7684\u52a0\u6e1b\u904b\u7b97\uff0c\u9019\u5c0d\u65bc\u9700\u8981\u9032\u884c\u6642\u9593\u8a08\u7b97\u7684\u61c9\u7528\u7a0b\u5f0f\u4f86\u8aaa\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u63a2\u8a0eOracle\u4e2d\u6642\u9593\u52a0\u6e1b\u7684\u8a9e\u53e5\u5beb\u6cd5\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u7bc4\u4f8b\u3002<\/p>\n<h2 id=\"oracle%e4%b8%ad%e7%9a%84%e6%97%a5%e6%9c%9f%e5%92%8c%e6%99%82%e9%96%93%e9%a1%9e%e5%9e%8b-oqPAgfFZCw\">Oracle\u4e2d\u7684\u65e5\u671f\u548c\u6642\u9593\u985e\u578b<\/h2>\n<p>\u5728Oracle\u4e2d\uff0c\u4e3b\u8981\u6709\u5169\u7a2e\u65e5\u671f\u548c\u6642\u9593\u985e\u578b\uff1a<code>DATE<\/code>\u548c<code>TIMESTAMP<\/code>\u3002<code>DATE<\/code>\u985e\u578b\u5305\u542b\u4e86\u65e5\u671f\u548c\u6642\u9593\uff0c\u7cbe\u78ba\u5230\u79d2\uff0c\u800c<code>TIMESTAMP<\/code>\u5247\u63d0\u4f9b\u4e86\u66f4\u9ad8\u7684\u7cbe\u5ea6\uff0c\u80fd\u5920\u7cbe\u78ba\u5230\u5fae\u79d2\u3002<\/p>\n<h2 id=\"%e6%99%82%e9%96%93%e5%8a%a0%e6%b8%9b%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-oqPAgfFZCw\">\u6642\u9593\u52a0\u6e1b\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u5728Oracle\u4e2d\uff0c\u6642\u9593\u7684\u52a0\u6e1b\u904b\u7b97\u53ef\u4ee5\u901a\u904e\u7c21\u55ae\u7684\u7b97\u8853\u904b\u7b97\u4f86\u5be6\u73fe\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u7684\u8a9e\u6cd5\uff1a<\/p>\n<ul>\n<li>\u52a0\u6cd5\uff1a<code>DATE + n<\/code>\uff0c\u5176\u4e2d<code>n<\/code>\u662f\u5929\u6578\u3002<\/li>\n<li>\u6e1b\u6cd5\uff1a<code>DATE - n<\/code>\uff0c\u540c\u6a23<code>n<\/code>\u662f\u5929\u6578\u3002<\/li>\n<li>\u52a0\u4e0a\u5c0f\u6642\uff1a<code>DATE + (n\/24)<\/code>\uff0c\u5176\u4e2d<code>n<\/code>\u662f\u5c0f\u6642\u6578\u3002<\/li>\n<li>\u52a0\u4e0a\u5206\u9418\uff1a<code>DATE + (n\/(24*60))<\/code>\uff0c\u5176\u4e2d<code>n<\/code>\u662f\u5206\u9418\u6578\u3002<\/li>\n<li>\u52a0\u4e0a\u79d2\uff1a<code>DATE + (n\/(24*60*60))<\/code>\uff0c\u5176\u4e2d<code>n<\/code>\u662f\u79d2\u6578\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%af%84%e4%be%8b-oqPAgfFZCw\">\u7bc4\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5177\u9ad4\u7684\u7bc4\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5728Oracle\u4e2d\u9032\u884c\u6642\u9593\u7684\u52a0\u6e1b\u904b\u7b97\uff1a<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b1%ef%bc%9a%e5%8a%a0%e4%b8%8a%e5%a4%a9%e6%95%b8-oqPAgfFZCw\">\u7bc4\u4f8b1\uff1a\u52a0\u4e0a\u5929\u6578<\/h3>\n<pre><code>\nSELECT SYSDATE AS \u73fe\u5728\u6642\u9593,\n       SYSDATE + 10 AS \u5341\u5929\u5f8c\u6642\u9593\nFROM dual;\n<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de\u7576\u524d\u6642\u9593\u548c\u5341\u5929\u5f8c\u7684\u6642\u9593\u3002<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b2%ef%bc%9a%e6%b8%9b%e5%8e%bb%e5%b0%8f%e6%99%82-oqPAgfFZCw\">\u7bc4\u4f8b2\uff1a\u6e1b\u53bb\u5c0f\u6642<\/h3>\n<pre><code>\nSELECT SYSDATE AS \u73fe\u5728\u6642\u9593,\n       SYSDATE - (5\/24) AS \u4e94\u5c0f\u6642\u524d\u6642\u9593\nFROM dual;\n<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de\u7576\u524d\u6642\u9593\u548c\u4e94\u5c0f\u6642\u524d\u7684\u6642\u9593\u3002<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b3%ef%bc%9a%e5%8a%a0%e4%b8%8a%e5%88%86%e9%90%98-oqPAgfFZCw\">\u7bc4\u4f8b3\uff1a\u52a0\u4e0a\u5206\u9418<\/h3>\n<pre><code>\nSELECT SYSDATE AS \u73fe\u5728\u6642\u9593,\n       SYSDATE + (30\/(24*60)) AS \u4e09\u5341\u5206\u9418\u5f8c\u6642\u9593\nFROM dual;\n<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de\u7576\u524d\u6642\u9593\u548c\u4e09\u5341\u5206\u9418\u5f8c\u7684\u6642\u9593\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8interval%e9%a1%9e%e5%9e%8b-oqPAgfFZCw\">\u4f7f\u7528INTERVAL\u985e\u578b<\/h2>\n<p>\u9664\u4e86\u57fa\u672c\u7684\u7b97\u8853\u904b\u7b97\u5916\uff0cOracle\u9084\u63d0\u4f9b\u4e86<code>INTERVAL<\/code>\u985e\u578b\u4f86\u9032\u884c\u66f4\u9748\u6d3b\u7684\u6642\u9593\u52a0\u6e1b\u904b\u7b97\u3002<code>INTERVAL<\/code>\u985e\u578b\u53ef\u4ee5\u7528\u4f86\u8868\u793a\u4e00\u6bb5\u6642\u9593\uff0c\u4e26\u4e14\u53ef\u4ee5\u7528\u4f86\u9032\u884c\u52a0\u6e1b\u904b\u7b97\u3002<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b4%ef%bc%9a%e4%bd%bf%e7%94%a8interval%e5%8a%a0%e6%b8%9b%e6%99%82%e9%96%93-oqPAgfFZCw\">\u7bc4\u4f8b4\uff1a\u4f7f\u7528INTERVAL\u52a0\u6e1b\u6642\u9593<\/h3>\n<pre><code>\nSELECT SYSDATE AS \u73fe\u5728\u6642\u9593,\n       SYSDATE + INTERVAL '5' DAY AS \u4e94\u5929\u5f8c\u6642\u9593,\n       SYSDATE - INTERVAL '2' HOUR AS \u5169\u5c0f\u6642\u524d\u6642\u9593\nFROM dual;\n<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c55\u793a\u4e86\u5982\u4f55\u4f7f\u7528<code>INTERVAL<\/code>\u4f86\u52a0\u6e1b\u5929\u6578\u548c\u5c0f\u6642\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-oqPAgfFZCw\">\u7e3d\u7d50<\/h2>\n<p>\u5728Oracle\u4e2d\uff0c\u6642\u9593\u7684\u52a0\u6e1b\u904b\u7b97\u662f\u901a\u904e\u7c21\u55ae\u7684\u7b97\u8853\u904b\u7b97\u548c<code>INTERVAL<\/code>\u985e\u578b\u4f86\u5be6\u73fe\u7684\u3002\u9019\u4e9b\u529f\u80fd\u4f7f\u5f97\u958b\u767c\u8005\u80fd\u5920\u9748\u6d3b\u5730\u8655\u7406\u6642\u9593\u6578\u64da\uff0c\u6eff\u8db3\u5404\u7a2e\u61c9\u7528\u9700\u6c42\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u80fd\u548c\u7a69\u5b9a\u6027\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684<code>VPS<\/code>\u89e3\u6c7a\u65b9\u6848\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u4e86\u89e3\u5982\u4f55\u5728Oracle\u4e2d\u9032\u884c\u6642\u9593\u52a0\u6e1b\u904b\u7b97\uff0c\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u60a8\u7684\u8cc7\u6599\u5eab\u7ba1\u7406\u6280\u80fd\u3002\u5982\u679c\u60a8\u5c0d<code>\u9999\u6e2fVPS<\/code>\u6216\u5176\u4ed6<code>\u4f3a\u670d\u5668<\/code>\u89e3\u6c7a\u65b9\u6848\u611f\u8208\u8da3\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9 <a href=\"https:\/\/server.hk\">Server.HK<\/a> \u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3Oracle\u4e2d\u6642\u9593\u52a0\u6e1b\u7684\u8a9e\u53e5\u5beb\u6cd5\uff0c\u638c\u63e1\u65e5\u671f\u548c\u6642\u9593\u7684\u904b\u7b97\u6280\u5de7\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\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-95336","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95336","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=95336"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95336\/revisions"}],"predecessor-version":[{"id":95337,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/95336\/revisions\/95337"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=95336"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=95336"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=95336"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}