{"id":17613,"date":"2024-11-18T14:32:31","date_gmt":"2024-11-18T06:32:31","guid":{"rendered":"https:\/\/fwq.ai\/blog\/17613\/"},"modified":"2024-11-18T14:32:31","modified_gmt":"2024-11-18T06:32:31","slug":"oracle%e5%a6%82%e4%bd%95%e4%bf%ae%e6%94%b9%e6%97%b6%e9%97%b4%e6%a0%bc%e5%bc%8f%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/17613\/","title":{"rendered":"Oracle\u5982\u4f55\u4fee\u6539\u65f6\u95f4\u683c\u5f0f\uff1f"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/164\/170970841030664.jpg\" class=\"aligncenter\" title=\"Oracle\u5982\u4f55\u4fee\u6539\u65f6\u95f4\u683c\u5f0f\uff1f\u63d2\u56fe\" alt=\"Oracle\u5982\u4f55\u4fee\u6539\u65f6\u95f4\u683c\u5f0f\uff1f\u63d2\u56fe\" \/><\/p>\n<p>Oracle\u6570\u636e\u5e93\u4e2d\u65f6\u95f4\u683c\u5f0f\u7684\u4fee\u6539\u5728\u5b9e\u9645\u7684\u5f00\u53d1\u4e2d\u975e\u5e38\u5e38\u89c1\uff0c\u672c\u6587\u5c06\u4ecb\u7ecdOracle\u6570\u636e\u5e93\u4e2d\u5982\u4f55\u4fee\u6539\u65f6\u95f4\u683c\u5f0f\uff0c\u5e76\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n<p>\u5728Oracle\u6570\u636e\u5e93\u4e2d\uff0c\u65f6\u95f4\u6570\u636e\u7c7b\u578b\u4e3b\u8981\u6709DATE\u548cTIMESTAMP\u4e24\u79cd\u7c7b\u578b\uff0c\u5176\u4e2dDATE\u7c7b\u578b\u5b58\u50a8\u65e5\u671f\u548c\u65f6\u95f4\uff0c\u800cTIMESTAMP\u7c7b\u578b\u53ef\u4ee5\u5b58\u50a8\u66f4\u9ad8\u7cbe\u5ea6\u7684\u65f6\u95f4\u4fe1\u606f\u3002\u5728\u8fdb\u884c\u65f6\u95f4\u683c\u5f0f\u4fee\u6539\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528TO_CHAR\u51fd\u6570\u6765\u5b9e\u73b0\u3002<\/p>\n<p>\u4e0b\u9762\u6211\u4eec\u5c06\u901a\u8fc7\u4e00\u4e9b\u5177\u4f53\u7684\u793a\u4f8b\u6765\u6f14\u793a\u5982\u4f55\u4fee\u6539\u65f6\u95f4\u683c\u5f0f\u3002<\/p>\n<h3>\u793a\u4f8b\u4e00\uff1a\u5c06\u65e5\u671f\u65f6\u95f4\u683c\u5f0f\u8f6c\u6362\u4e3a\u6307\u5b9a\u683c\u5f0f<\/h3>\n<p>\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u65e5\u671f\u65f6\u95f4\u5b57\u6bb5\u4e3a&#8217;2022-10-22 14:30:00&#8217;\uff0c\u73b0\u5728\u6211\u4eec\u8981\u5c06\u5176\u8f6c\u6362\u4e3a&#8217;2022\u5e7410\u670822\u65e5 14\u65f630\u5206&#8217;\u7684\u683c\u5f0f\uff0c\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre>SELECT TO_CHAR(TO_DATE('2022-10-22 14:30:00', 'YYYY-MM-DD HH24:MI:SS'), 'YYYY\"\u5e74\"MM\"\u6708\"DD\"\u65e5\" HH\"\u65f6\"MI\"\u5206\"') \nFROM dual;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<h3>\u793a\u4f8b\u4e8c\uff1a\u5c06\u65e5\u671f\u683c\u5f0f\u8f6c\u6362\u4e3a\u53ea\u663e\u793a\u5e74\u6708\u65e5<\/h3>\n<p>\u5982\u679c\u53ea\u9700\u8981\u663e\u793a\u65e5\u671f\u7684\u5e74\u6708\u65e5\u90e8\u5206\uff0c\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre>SELECT TO_CHAR(SYSDATE, 'YYYY-MM-DD') \nFROM dual;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<h3>\u793a\u4f8b\u4e09\uff1a\u5c06\u65f6\u95f4\u683c\u5f0f\u8f6c\u6362\u4e3a\u53ea\u663e\u793a\u65f6\u5206\u79d2<\/h3>\n<p>\u5982\u679c\u53ea\u9700\u8981\u663e\u793a\u65f6\u95f4\u7684\u65f6\u5206\u79d2\u90e8\u5206\uff0c\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre>SELECT TO_CHAR(SYSDATE, 'HH24:MI:SS') \nFROM dual;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<h3>\u793a\u4f8b\u56db\uff1a\u5c06\u65e5\u671f\u65f6\u95f4\u683c\u5f0f\u8f6c\u6362\u4e3a\u6708\u4efd\u540d\u79f0\u683c\u5f0f<\/h3>\n<p>\u5982\u679c\u9700\u8981\u5c06\u65e5\u671f\u65f6\u95f4\u5b57\u6bb5\u8f6c\u6362\u4e3a\u5e26\u6709\u6708\u4efd\u540d\u79f0\u7684\u683c\u5f0f\uff0c\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre>SELECT TO_CHAR(TO_DATE('2022-10-22', 'YYYY-MM-DD'), 'YYYY\"\u5e74\"MM\"\u6708\"DD\"\u65e5\"') \nFROM dual;<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<h3>\u7ed3\u8bed<\/h3>\n<p>\u901a\u8fc7\u4ee5\u4e0a\u793a\u4f8b\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u5728Oracle\u6570\u636e\u5e93\u4e2d\u5982\u4f55\u4fee\u6539\u65f6\u95f4\u683c\u5f0f\u3002\u901a\u8fc7\u4f7f\u7528TO_CHAR\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u7075\u6d3b\u5730\u5c06\u65f6\u95f4\u5b57\u6bb5\u6309\u7167\u81ea\u5df1\u7684\u9700\u6c42\u8fdb\u884c\u683c\u5f0f\u5316\uff0c\u4f7f\u5176\u66f4\u7b26\u5408\u5b9e\u9645\u7684\u5c55\u793a\u9700\u6c42\u3002\u5728\u4f7f\u7528\u8fc7\u7a0b\u4e2d\uff0c\u9700\u8981\u6839\u636e\u5177\u4f53\u7684\u65f6\u95f4\u683c\u5f0f\u8981\u6c42\u6765\u9009\u62e9\u5408\u9002\u7684\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\uff0c\u4ee5\u8fbe\u5230\u9884\u671f\u7684\u5c55\u793a\u6548\u679c\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662fOracle\u5982\u4f55\u4fee\u6539\u65f6\u95f4\u683c\u5f0f\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Oracle\u6570\u636e\u5e93\u4e2d\u65f6\u95f4\u683c\u5f0f\u7684\u4fee\u6539\u5728\u5b9e\u9645\u7684\u5f00\u53d1\u4e2d\u975e\u5e38\u5e38\u89c1\uff0c\u672c\u6587\u5c06\u4ecb\u7ecdOracle\u6570\u636e\u5e93\u4e2d\u5982\u4f55\u4fee\u6539\u65f6\u95f4\u683c\u5f0f\uff0c\u5e76\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002 \u5728Oracle\u6570\u636e\u5e93\u4e2d\uff0c\u65f6\u95f4\u6570\u636e\u7c7b\u578b\u4e3b\u8981\u6709DATE\u548cTIMESTAMP\u4e24\u79cd\u7c7b\u578b\uff0c\u5176\u4e2dDATE\u7c7b\u578b\u5b58\u50a8\u65e5\u671f\u548c\u65f6\u95f4\uff0c\u800cTIMESTAMP\u7c7b\u578b\u53ef\u4ee5\u5b58\u50a8\u66f4\u9ad8\u7cbe\u5ea6\u7684\u65f6\u95f4\u4fe1\u606f\u3002\u5728\u8fdb\u884c\u65f6\u95f4\u683c\u5f0f\u4fee\u6539\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528TO_CHAR\u51fd\u6570\u6765\u5b9e\u73b0\u3002 \u4e0b\u9762\u6211\u4eec\u5c06\u901a\u8fc7\u4e00\u4e9b\u5177\u4f53\u7684\u793a\u4f8b\u6765\u6f14\u793a\u5982\u4f55\u4fee\u6539\u65f6\u95f4\u683c\u5f0f\u3002 \u793a\u4f8b\u4e00\uff1a\u5c06\u65e5\u671f\u65f6\u95f4\u683c\u5f0f\u8f6c\u6362\u4e3a\u6307\u5b9a\u683c\u5f0f \u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u65e5\u671f\u65f6\u95f4\u5b57\u6bb5\u4e3a&#8217;2022-10-22 14:30:00&#8217;\uff0c\u73b0\u5728\u6211\u4eec\u8981\u5c06\u5176\u8f6c\u6362\u4e3a&#8217;2022\u5e7410\u670822\u65e5 14\u65f630\u5206&#8217;\u7684\u683c\u5f0f\uff0c\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u4ee3\u7801\uff1a SELECT TO_CHAR(TO_DATE(&#8216;2022-10-22 14:30:00&#8217;, &#8216;YYYY-MM-DD HH24:MI:SS&#8217;), &#8216;YYYY&#8221;\u5e74&#8221;MM&#8221;\u6708&#8221;DD&#8221;\u65e5&#8221; HH&#8221;\u65f6&#8221;MI&#8221;\u5206&#8221;&#8216;) FROM dual; \u767b\u5f55\u540e\u590d\u5236 \u793a\u4f8b\u4e8c\uff1a\u5c06\u65e5\u671f\u683c\u5f0f\u8f6c\u6362\u4e3a\u53ea\u663e\u793a\u5e74\u6708\u65e5 \u5982\u679c\u53ea\u9700\u8981\u663e\u793a\u65e5\u671f\u7684\u5e74\u6708\u65e5\u90e8\u5206\uff0c\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u4ee3\u7801\uff1a SELECT TO_CHAR(SYSDATE, &#8216;YYYY-MM-DD&#8217;) FROM dual; \u767b\u5f55\u540e\u590d\u5236 \u793a\u4f8b\u4e09\uff1a\u5c06\u65f6\u95f4\u683c\u5f0f\u8f6c\u6362\u4e3a\u53ea\u663e\u793a\u65f6\u5206\u79d2 \u5982\u679c\u53ea\u9700\u8981\u663e\u793a\u65f6\u95f4\u7684\u65f6\u5206\u79d2\u90e8\u5206\uff0c\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u4ee3\u7801\uff1a SELECT TO_CHAR(SYSDATE, &#8216;HH24:MI:SS&#8217;) FROM dual; \u767b\u5f55\u540e\u590d\u5236 \u793a\u4f8b\u56db\uff1a\u5c06\u65e5\u671f\u65f6\u95f4\u683c\u5f0f\u8f6c\u6362\u4e3a\u6708\u4efd\u540d\u79f0\u683c\u5f0f \u5982\u679c\u9700\u8981\u5c06\u65e5\u671f\u65f6\u95f4\u5b57\u6bb5\u8f6c\u6362\u4e3a\u5e26\u6709\u6708\u4efd\u540d\u79f0\u7684\u683c\u5f0f\uff0c\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u4ee3\u7801\uff1a SELECT TO_CHAR(TO_DATE(&#8216;2022-10-22&#8217;, &#8216;YYYY-MM-DD&#8217;), &#8216;YYYY&#8221;\u5e74&#8221;MM&#8221;\u6708&#8221;DD&#8221;\u65e5&#8221;&#8216;) FROM dual; \u767b\u5f55\u540e\u590d\u5236 \u7ed3\u8bed \u901a\u8fc7\u4ee5\u4e0a\u793a\u4f8b\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u5728Oracle\u6570\u636e\u5e93\u4e2d\u5982\u4f55\u4fee\u6539\u65f6\u95f4\u683c\u5f0f\u3002\u901a\u8fc7\u4f7f\u7528TO_CHAR\u51fd\u6570\uff0c\u6211\u4eec\u53ef\u4ee5\u7075\u6d3b\u5730\u5c06\u65f6\u95f4\u5b57\u6bb5\u6309\u7167\u81ea\u5df1\u7684\u9700\u6c42\u8fdb\u884c\u683c\u5f0f\u5316\uff0c\u4f7f\u5176\u66f4\u7b26\u5408\u5b9e\u9645\u7684\u5c55\u793a\u9700\u6c42\u3002\u5728\u4f7f\u7528\u8fc7\u7a0b\u4e2d\uff0c\u9700\u8981\u6839\u636e\u5177\u4f53\u7684\u65f6\u95f4\u683c\u5f0f\u8981\u6c42\u6765\u9009\u62e9\u5408\u9002\u7684\u683c\u5f0f\u5316\u5b57\u7b26\u4e32\uff0c\u4ee5\u8fbe\u5230\u9884\u671f\u7684\u5c55\u793a\u6548\u679c\u3002 \u4ee5\u4e0a\u5c31\u662fOracle\u5982\u4f55\u4fee\u6539\u65f6\u95f4\u683c\u5f0f\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-17613","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/17613","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=17613"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/17613\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=17613"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=17613"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=17613"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}