{"id":5023,"date":"2024-11-14T09:55:52","date_gmt":"2024-11-14T01:55:52","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5023\/"},"modified":"2024-11-14T09:55:52","modified_gmt":"2024-11-14T01:55:52","slug":"oracle%e5%bd%93%e5%89%8d%e6%97%b6%e9%97%b4%e6%80%8e%e4%b9%88%e8%8e%b7%e5%be%97","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5023\/","title":{"rendered":"oracle\u5f53\u524d\u65f6\u95f4\u600e\u4e48\u83b7\u5f97"},"content":{"rendered":"<blockquote><p>\n  oracle \u4e2d\u83b7\u53d6\u5f53\u524d\u65f6\u95f4\u7684\u51e0\u79cd\u65b9\u6cd5\u5305\u62ec\uff1a1. sysdate \u51fd\u6570\uff08\u65e5\u671f\u548c\u65f6\u95f4\u6233\uff09\uff1b2. current_timestamp \u51fd\u6570\uff08\u65f6\u95f4\u6233\uff09\uff1b3. now() \u51fd\u6570\uff08\u4e0e current_timestamp \u76f8\u540c\uff09\uff1b4. localtimestamp() \u51fd\u6570\uff08\u57fa\u4e8e\u670d\u52a1\u5668\u65f6\u533a\u7684\u65f6\u95f4\u6233\uff09\uff1b5. sessiontimezone() \u51fd\u6570\uff08\u5f53\u524d\u4f1a\u8bdd\u7684\u65f6\u533a\uff09\uff1b6. at time zone \u5b50\u53e5\uff08\u8f6c\u6362\u65f6\u533a\uff09\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202405\/21\/2024052111121887122.jpg\" class=\"aligncenter\" title=\"oracle\u5f53\u524d\u65f6\u95f4\u600e\u4e48\u83b7\u5f97\u63d2\u56fe\" alt=\"oracle\u5f53\u524d\u65f6\u95f4\u600e\u4e48\u83b7\u5f97\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u83b7\u53d6 Oracle \u5f53\u524d\u65f6\u95f4<\/strong><\/p>\n<p>\u5728 Oracle \u6570\u636e\u5e93\u4e2d\u83b7\u53d6\u5f53\u524d\u65f6\u95f4\u7684\u65b9\u6cd5\u6709\u51e0\u79cd\uff1a<\/p>\n<p><strong>1. SYSDATE \u51fd\u6570<\/strong><\/p>\n<p>SYSDATE \u51fd\u6570\u8fd4\u56de\u5f53\u524d\u65e5\u671f\u548c\u65f6\u95f4\u6233\u3002<\/p>\n<pre>SELECT SYSDATE FROM dual;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. CURRENT_TIMESTAMP \u51fd\u6570<\/strong><\/p>\n<p>CURRENT_TIMESTAMP \u51fd\u6570\u8fd4\u56de\u5f53\u524d\u65f6\u95f4\u6233\uff0c\u4e0d\u5305\u62ec\u65e5\u671f\u3002<\/p>\n<pre>SELECT CURRENT_TIMESTAMP FROM dual;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>3. NOW() \u51fd\u6570<\/strong><\/p>\n<p>NOW() \u51fd\u6570\u4e0e CURRENT_TIMESTAMP \u51fd\u6570\u76f8\u540c\uff0c\u8fd4\u56de\u5f53\u524d\u65f6\u95f4\u6233\u3002<\/p>\n<pre>SELECT NOW() FROM dual;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>4. LOCALTIMESTAMP() \u51fd\u6570<\/strong><\/p>\n<p>LOCALTIMESTAMP() \u51fd\u6570\u8fd4\u56de\u5f53\u524d\u65f6\u95f4\u6233\uff0c\u57fa\u4e8e\u670d\u52a1\u5668\u6240\u5728\u7684\u65f6\u533a\u3002<\/p>\n<pre>SELECT LOCALTIMESTAMP FROM dual;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>5. SESSIONTIMEZONE() \u51fd\u6570<\/strong><\/p>\n<p>SESSIONTIMEZONE() \u51fd\u6570\u8fd4\u56de\u5f53\u524d\u4f1a\u8bdd\u7684\u65f6\u533a\u3002<\/p>\n<pre>SELECT SESSIONTIMEZONE() FROM dual;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>6. AT TIME ZONE \u5b50\u53e5<\/strong><\/p>\n<p>\u53ef\u4ee5\u5728\u65f6\u95f4\u503c\u540e\u9762\u4f7f\u7528 AT TIME ZONE \u5b50\u53e5\u6765\u8f6c\u6362\u65f6\u533a\u3002<\/p>\n<pre>SELECT SYSDATE AT TIME ZONE 'Asia\/Shanghai' FROM dual;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u793a\u4f8b\u7528\u6cd5<\/strong><\/p>\n<p>\u83b7\u53d6\u5f53\u524d\u65f6\u95f4\u5e76\u5c06\u5176\u683c\u5f0f\u5316\u4e3a\u53ef\u8bfb\u5b57\u7b26\u4e32\uff1a<\/p>\n<pre>SELECT TO_CHAR(SYSDATE, 'YYYY-MM-DD HH24:MI:SS') AS \"Current Date and Time\" FROM dual;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u83b7\u53d6\u5f53\u524d\u65f6\u95f4\u6233\u5e76\u5c06\u5176\u8f6c\u6362\u4e3a\u4e0a\u6d77\u65f6\u533a\uff1a<\/p>\n<pre>SELECT TO_TIMESTAMP(CURRENT_TIMESTAMP, 'YYYY-MM-DD HH24:MI:SS') AT TIME ZONE 'Asia\/Shanghai' AS \"Shanghai Time\" FROM dual;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5f53\u524d\u65f6\u95f4\u600e\u4e48\u83b7\u5f97\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>oracle \u4e2d\u83b7\u53d6\u5f53\u524d\u65f6\u95f4\u7684\u51e0\u79cd\u65b9\u6cd5\u5305\u62ec\uff1a1. sysdate \u51fd\u6570\uff08\u65e5\u671f\u548c\u65f6\u95f4\u6233\uff09\uff1b2. current_timestamp \u51fd\u6570\uff08\u65f6\u95f4\u6233\uff09\uff1b3. now() \u51fd\u6570\uff08\u4e0e current_timestamp \u76f8\u540c\uff09\uff1b4. localtimestamp() \u51fd\u6570\uff08\u57fa\u4e8e\u670d\u52a1\u5668\u65f6\u533a\u7684\u65f6\u95f4\u6233\uff09\uff1b5. sessiontimezone() \u51fd\u6570\uff08\u5f53\u524d\u4f1a\u8bdd\u7684\u65f6\u533a\uff09\uff1b6. at time zone \u5b50\u53e5\uff08\u8f6c\u6362\u65f6\u533a\uff09\u3002 \u5982\u4f55\u83b7\u53d6 Oracle \u5f53\u524d\u65f6\u95f4 \u5728 Oracle \u6570\u636e\u5e93\u4e2d\u83b7\u53d6\u5f53\u524d\u65f6\u95f4\u7684\u65b9\u6cd5\u6709\u51e0\u79cd\uff1a 1. SYSDATE \u51fd\u6570 SYSDATE \u51fd\u6570\u8fd4\u56de\u5f53\u524d\u65e5\u671f\u548c\u65f6\u95f4\u6233\u3002 SELECT SYSDATE FROM dual; \u767b\u5f55\u540e\u590d\u5236 2. CURRENT_TIMESTAMP \u51fd\u6570 CURRENT_TIMESTAMP \u51fd\u6570\u8fd4\u56de\u5f53\u524d\u65f6\u95f4\u6233\uff0c\u4e0d\u5305\u62ec\u65e5\u671f\u3002 SELECT CURRENT_TIMESTAMP FROM dual; \u767b\u5f55\u540e\u590d\u5236 3. NOW() \u51fd\u6570 NOW() \u51fd\u6570\u4e0e CURRENT_TIMESTAMP \u51fd\u6570\u76f8\u540c\uff0c\u8fd4\u56de\u5f53\u524d\u65f6\u95f4\u6233\u3002 SELECT NOW() FROM dual; [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-5023","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5023","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=5023"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5023\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5023"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5023"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5023"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}