{"id":94806,"date":"2024-10-19T20:49:16","date_gmt":"2024-10-19T12:49:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/94806\/"},"modified":"2024-10-19T20:49:16","modified_gmt":"2024-10-19T12:49:16","slug":"oracle%e6%9f%a5%e8%a9%a2%e7%95%b6%e5%89%8d%e6%99%82%e9%96%93%e7%9a%84%e5%af%a6%e7%8f%be","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/94806\/","title":{"rendered":"oracle\u67e5\u8a62\u7576\u524d\u6642\u9593\u7684\u5be6\u73fe"},"content":{"rendered":"<h1 id=\"oracle%e6%9f%a5%e8%a9%a2%e7%95%b6%e5%89%8d%e6%99%82%e9%96%93%e7%9a%84%e5%af%a6%e7%8f%be-JexhUaupqZ\">Oracle\u67e5\u8a62\u7576\u524d\u6642\u9593\u7684\u5be6\u73fe<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u6642\u9593\u7684\u7ba1\u7406\u8207\u67e5\u8a62\u662f\u975e\u5e38\u91cd\u8981\u7684\u4e00\u74b0\u3002Oracle\u6578\u64da\u5eab\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u67e5\u8a62\u7576\u524d\u6642\u9593\uff0c\u9019\u5c0d\u65bc\u8a31\u591a\u61c9\u7528\u5834\u666f\u4f86\u8aaa\u90fd\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728Oracle\u4e2d\u67e5\u8a62\u7576\u524d\u6642\u9593\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"oracle%e4%b8%ad%e7%9a%84%e6%99%82%e9%96%93%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-JexhUaupqZ\">Oracle\u4e2d\u7684\u6642\u9593\u6578\u64da\u985e\u578b<\/h2>\n<p>\u5728Oracle\u4e2d\uff0c\u4e3b\u8981\u6709\u4ee5\u4e0b\u5e7e\u7a2e\u6642\u9593\u6578\u64da\u985e\u578b\uff1a<\/p>\n<ul>\n<li><strong>DATE<\/strong>\uff1a\u5305\u542b\u65e5\u671f\u548c\u6642\u9593\uff0c\u7cbe\u78ba\u5230\u79d2\u3002<\/li>\n<li><strong>TIMESTAMP<\/strong>\uff1a\u6bd4DATE\u66f4\u7cbe\u78ba\uff0c\u652f\u6301\u5c0f\u6578\u79d2\u3002<\/li>\n<li><strong>INTERVAL<\/strong>\uff1a\u8868\u793a\u6642\u9593\u9593\u9694\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%9f%a5%e8%a9%a2%e7%95%b6%e5%89%8d%e6%99%82%e9%96%93%e7%9a%84%e6%96%b9%e6%b3%95-JexhUaupqZ\">\u67e5\u8a62\u7576\u524d\u6642\u9593\u7684\u65b9\u6cd5<\/h2>\n<p>\u5728Oracle\u4e2d\uff0c\u67e5\u8a62\u7576\u524d\u6642\u9593\u7684\u6700\u5e38\u7528\u65b9\u6cd5\u662f\u4f7f\u7528SYSDATE\u548cSYSTIMESTAMP\u51fd\u6578\u3002<\/p>\n<h3 id=\"%e4%bd%bf%e7%94%a8sysdate-JexhUaupqZ\">\u4f7f\u7528SYSDATE<\/h3>\n<p>SYSDATE\u51fd\u6578\u8fd4\u56de\u7576\u524d\u7684\u65e5\u671f\u548c\u6642\u9593\uff0c\u683c\u5f0f\u70baYYYY-MM-DD HH24:MI:SS\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528SYSDATE\u67e5\u8a62\u7576\u524d\u6642\u9593\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT SYSDATE FROM dual;<\/code><\/pre>\n<p>\u57f7\u884c\u4e0a\u8ff0\u67e5\u8a62\u5f8c\uff0c\u5c07\u8fd4\u56de\u985e\u4f3c\u65bc\u4ee5\u4e0b\u7684\u7d50\u679c\uff1a<\/p>\n<pre><code>2023-10-01 14:30:00<\/code><\/pre>\n<h3 id=\"%e4%bd%bf%e7%94%a8systimestamp-JexhUaupqZ\">\u4f7f\u7528SYSTIMESTAMP<\/h3>\n<p>SYSTIMESTAMP\u51fd\u6578\u8fd4\u56de\u7576\u524d\u7684\u6642\u9593\u6233\uff0c\u5305\u62ec\u6642\u5340\u4fe1\u606f\uff0c\u683c\u5f0f\u70baYYYY-MM-DD HH24:MI:SS.FF TZR\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528SYSTIMESTAMP\u67e5\u8a62\u7576\u524d\u6642\u9593\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT SYSTIMESTAMP FROM dual;<\/code><\/pre>\n<p>\u57f7\u884c\u4e0a\u8ff0\u67e5\u8a62\u5f8c\uff0c\u5c07\u8fd4\u56de\u985e\u4f3c\u65bc\u4ee5\u4e0b\u7684\u7d50\u679c\uff1a<\/p>\n<pre><code>2023-10-01 14:30:00.123456 +08:00<\/code><\/pre>\n<h2 id=\"%e6%99%82%e9%96%93%e6%a0%bc%e5%bc%8f%e5%8c%96-JexhUaupqZ\">\u6642\u9593\u683c\u5f0f\u5316<\/h2>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u6211\u5011\u53ef\u80fd\u9700\u8981\u4ee5\u7279\u5b9a\u683c\u5f0f\u986f\u793a\u7576\u524d\u6642\u9593\u3002Oracle\u63d0\u4f9b\u4e86TO_CHAR\u51fd\u6578\u4f86\u683c\u5f0f\u5316\u65e5\u671f\u548c\u6642\u9593\u3002\u4ee5\u4e0b\u662f\u683c\u5f0f\u5316\u7576\u524d\u6642\u9593\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT TO_CHAR(SYSDATE, 'YYYY-MM-DD HH24:MI:SS') AS formatted_date FROM dual;<\/code><\/pre>\n<p>\u9019\u5c07\u8fd4\u56de\u4e00\u500b\u683c\u5f0f\u5316\u7684\u65e5\u671f\u5b57\u7b26\u4e32\uff0c\u4f8b\u5982\uff1a<\/p>\n<pre><code>2023-10-01 14:30:00<\/code><\/pre>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e6%99%82%e9%96%93%e6%88%b3%e9%80%b2%e8%a1%8c%e8%a8%88%e7%ae%97-JexhUaupqZ\">\u4f7f\u7528\u6642\u9593\u6233\u9032\u884c\u8a08\u7b97<\/h2>\n<p>\u9664\u4e86\u67e5\u8a62\u7576\u524d\u6642\u9593\u5916\uff0cOracle\u9084\u5141\u8a31\u6211\u5011\u9032\u884c\u6642\u9593\u8a08\u7b97\u3002\u4f8b\u5982\uff0c\u6211\u5011\u53ef\u4ee5\u8a08\u7b97\u7576\u524d\u6642\u9593\u52a0\u4e0a\u7279\u5b9a\u7684\u6642\u9593\u9593\u9694\uff1a<\/p>\n<pre><code>SELECT SYSDATE + INTERVAL '1' HOUR AS one_hour_later FROM dual;<\/code><\/pre>\n<p>\u9019\u5c07\u8fd4\u56de\u7576\u524d\u6642\u9593\u52a0\u4e0a\u4e00\u5c0f\u6642\u7684\u7d50\u679c\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-JexhUaupqZ\">\u7d50\u8ad6<\/h2>\n<p>\u5728Oracle\u4e2d\u67e5\u8a62\u7576\u524d\u6642\u9593\u662f\u6578\u64da\u5eab\u64cd\u4f5c\u4e2d\u4e00\u500b\u57fa\u672c\u800c\u91cd\u8981\u7684\u529f\u80fd\u3002\u901a\u904e\u4f7f\u7528SYSDATE\u548cSYSTIMESTAMP\u51fd\u6578\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u7372\u53d6\u7576\u524d\u7684\u65e5\u671f\u548c\u6642\u9593\uff0c\u4e26\u6839\u64da\u9700\u8981\u9032\u884c\u683c\u5f0f\u5316\u548c\u8a08\u7b97\u3002\u9019\u4e9b\u529f\u80fd\u5728\u8a31\u591a\u61c9\u7528\u5834\u666f\u4e2d\u90fd\u5177\u6709\u91cd\u8981\u7684\u5be6\u7528\u50f9\u503c\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728Oracle\u4e2d\u9032\u884c\u66f4\u6df1\u5165\u7684\u6642\u9593\u7ba1\u7406\u6709\u8208\u8da3\uff0c\u6216\u8005\u9700\u8981\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u60a8\u53ef\u4ee5\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u670d\u52d9\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u61c9\u7528\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728Oracle\u4e2d\u67e5\u8a62\u7576\u524d\u6642\u9593\u7684\u5be6\u73fe\u65b9\u6cd5\uff0c\u7c21\u55ae\u6b65\u9a5f\u52a9\u60a8\u5feb\u901f\u7372\u53d6\u7cfb\u7d71\u6642\u9593\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-94806","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94806","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=94806"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94806\/revisions"}],"predecessor-version":[{"id":94807,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/94806\/revisions\/94807"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=94806"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=94806"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=94806"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}