{"id":5014,"date":"2024-11-14T11:27:58","date_gmt":"2024-11-14T03:27:58","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5014\/"},"modified":"2024-11-14T11:27:58","modified_gmt":"2024-11-14T03:27:58","slug":"oracle%e6%97%b6%e9%97%b4%e6%a0%bc%e5%bc%8f%e6%80%8e%e4%b9%88%e8%bd%ac%e6%8d%a2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5014\/","title":{"rendered":"oracle\u65f6\u95f4\u683c\u5f0f\u600e\u4e48\u8f6c\u6362"},"content":{"rendered":"<p><strong>\u65f6\u95f4\u683c\u5f0f\u8f6c\u6362<\/strong><\/p>\n<p><strong>\u8f6c\u6362\u65f6\u95f4\u683c\u5f0f<\/strong><\/p>\n<p>Oracle\u63d0\u4f9b\u591a\u79cd\u51fd\u6570\u6765\u683c\u5f0f\u5316\u6216\u8f6c\u6362\u65f6\u95f4\u503c\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li> <strong>TO_DATE (str, format_mask):<\/strong> \u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u65e5\u671f\/\u65f6\u95f4\u503c<\/li>\n<li> <strong>TO_TIMESTAMP (str, format_mask):<\/strong> \u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u65f6\u95f4\u6233\u503c<\/li>\n<li> <strong>TO_CHAR (date\/time_value, format_mask):<\/strong> \u5c06\u65e5\u671f\/\u65f6\u95f4\u503c\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32<\/li>\n<\/ul>\n<p><strong>\u683c\u5f0f\u5316\u63a9\u7801<\/strong><\/p>\n<p>\u683c\u5f0f\u5316\u63a9\u7801\u662f\u4e00\u4e2a\u6a21\u677f\uff0c\u7528\u4e8e\u6307\u5b9a\u8f93\u51fa\u65f6\u95f4\u7684\u683c\u5f0f\u3002\u4e00\u4e9b\u5e38\u7528\u7684\u683c\u5f0f\u5316\u5b57\u7b26\u5305\u62ec\uff1a<\/p>\n<ul>\n<li> <strong>&#8216;yyyy&#8217;:<\/strong> \u5e74\u4efd<\/li>\n<li> <strong>&#8216;mm&#8217;:<\/strong> \u6708\u4efd<\/li>\n<li> <strong>&#8216;dd&#8217;:<\/strong> \u65e5<\/li>\n<li> <strong>&#8216;hh&#8217;:<\/strong> \u5c0f\u65f6\uff0812 \u5c0f\u65f6\u5236\uff09<\/li>\n<li> <strong>&#8216;HH&#8217;:<\/strong> \u5c0f\u65f6\uff0824 \u5c0f\u65f6\u5236\uff09<\/li>\n<li> <strong>&#8216;mi&#8217;:<\/strong> \u5206\u949f<\/li>\n<li> <strong>&#8216;ss&#8217;:<\/strong> \u79d2<\/li>\n<li> <strong>&#8216;ff&#8217;:<\/strong> \u6beb\u79d2<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b<\/strong><\/p>\n<p>\u4ee5\u4e0b\u793a\u4f8b\u6f14\u793a\u5982\u4f55\u4f7f\u7528 TO_DATE() \u51fd\u6570\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u65e5\u671f\/\u65f6\u95f4\u503c\uff1a<\/p>\n<pre>SELECT TO_DATE('2023-08-15', 'YYYY-MM-DD') FROM dual;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8f93\u51fa\uff1a<\/p>\n<pre>2023-08-15 00:00:00<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0b\u793a\u4f8b\u6f14\u793a\u5982\u4f55\u4f7f\u7528 TO_CHAR() \u51fd\u6570\u5c06\u65e5\u671f\/\u65f6\u95f4\u503c\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\uff1a<\/p>\n<pre>SELECT TO_CHAR(SYSDATE, 'hh24:mi:ss') FROM dual;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u8f93\u51fa\uff1a<\/p>\n<pre>16:35:00<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u6ce8\u610f<\/strong><\/p>\n<ul>\n<li>\u65f6\u95f4\u683c\u5f0f\u5fc5\u987b\u4e0e\u6240\u8f6c\u6362\u7684\u5b57\u7b26\u4e32\u6216\u503c\u4e2d\u4f7f\u7528\u7684\u683c\u5f0f\u5339\u914d\u3002<\/li>\n<li>\u683c\u5f0f\u5316\u63a9\u7801\u53ef\u4ee5\u901a\u8fc7\u9017\u53f7\u5206\u9694\u591a\u4e2a\u683c\u5f0f\u5316\u5b57\u7b26\u6765\u6307\u5b9a\u591a\u4e2a\u5143\u7d20\u3002<\/li>\n<li>\u4f7f\u7528 TO_TIMESTAMP() \u51fd\u6570\u65f6\uff0c\u683c\u5f0f\u5316\u63a9\u7801\u5fc5\u987b\u5305\u542b\u6beb\u79d2\u5143\u7d20\uff08&#8217;ff&#8217;\uff09\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662f\u65f6\u95f4\u683c\u5f0f\u600e\u4e48\u8f6c\u6362\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>\u65f6\u95f4\u683c\u5f0f\u8f6c\u6362 \u8f6c\u6362\u65f6\u95f4\u683c\u5f0f Oracle\u63d0\u4f9b\u591a\u79cd\u51fd\u6570\u6765\u683c\u5f0f\u5316\u6216\u8f6c\u6362\u65f6\u95f4\u503c\uff0c\u5305\u62ec\uff1a TO_DATE (str, format_mask): \u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u65e5\u671f\/\u65f6\u95f4\u503c TO_TIMESTAMP (str, format_mask): \u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u65f6\u95f4\u6233\u503c TO_CHAR (date\/time_value, format_mask): \u5c06\u65e5\u671f\/\u65f6\u95f4\u503c\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32 \u683c\u5f0f\u5316\u63a9\u7801 \u683c\u5f0f\u5316\u63a9\u7801\u662f\u4e00\u4e2a\u6a21\u677f\uff0c\u7528\u4e8e\u6307\u5b9a\u8f93\u51fa\u65f6\u95f4\u7684\u683c\u5f0f\u3002\u4e00\u4e9b\u5e38\u7528\u7684\u683c\u5f0f\u5316\u5b57\u7b26\u5305\u62ec\uff1a &#8216;yyyy&#8217;: \u5e74\u4efd &#8216;mm&#8217;: \u6708\u4efd &#8216;dd&#8217;: \u65e5 &#8216;hh&#8217;: \u5c0f\u65f6\uff0812 \u5c0f\u65f6\u5236\uff09 &#8216;HH&#8217;: \u5c0f\u65f6\uff0824 \u5c0f\u65f6\u5236\uff09 &#8216;mi&#8217;: \u5206\u949f &#8216;ss&#8217;: \u79d2 &#8216;ff&#8217;: \u6beb\u79d2 \u793a\u4f8b \u4ee5\u4e0b\u793a\u4f8b\u6f14\u793a\u5982\u4f55\u4f7f\u7528 TO_DATE() \u51fd\u6570\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u65e5\u671f\/\u65f6\u95f4\u503c\uff1a SELECT TO_DATE(&#8216;2023-08-15&#8217;, &#8216;YYYY-MM-DD&#8217;) FROM dual; \u767b\u5f55\u540e\u590d\u5236 \u8f93\u51fa\uff1a 2023-08-15 00:00:00 \u767b\u5f55\u540e\u590d\u5236 \u4ee5\u4e0b\u793a\u4f8b\u6f14\u793a\u5982\u4f55\u4f7f\u7528 TO_CHAR() \u51fd\u6570\u5c06\u65e5\u671f\/\u65f6\u95f4\u503c\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\uff1a SELECT TO_CHAR(SYSDATE, &#8216;hh24:mi:ss&#8217;) [&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-5014","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5014","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=5014"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5014\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5014"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5014"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5014"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}