{"id":93876,"date":"2024-10-19T17:39:18","date_gmt":"2024-10-19T09:39:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/93876\/"},"modified":"2024-10-19T17:39:19","modified_gmt":"2024-10-19T09:39:19","slug":"oracle-date-%e4%b8%ad%e5%85%a9%e5%80%8b%e5%8f%83%e6%95%b8%e7%9a%84%e6%a0%bc%e5%bc%8f%e4%b8%8d%e5%90%8c%e7%9a%84%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/93876\/","title":{"rendered":"Oracle date \u4e2d\u5169\u500b\u53c3\u6578\u7684\u683c\u5f0f\u4e0d\u540c\u7684\u89e3\u6c7a\u65b9\u6848"},"content":{"rendered":"<h1 id=\"oracle-date-%e4%b8%ad%e5%85%a9%e5%80%8b%e5%8f%83%e6%95%b8%e7%9a%84%e6%a0%bc%e5%bc%8f%e4%b8%8d%e5%90%8c%e7%9a%84%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88-qJUAgEZfYp\">Oracle Date \u4e2d\u5169\u500b\u53c3\u6578\u7684\u683c\u5f0f\u4e0d\u540c\u7684\u89e3\u6c7a\u65b9\u6848<\/h1>\n<p>\u5728\u4f7f\u7528 Oracle \u6578\u64da\u5eab\u6642\uff0c\u65e5\u671f\u683c\u5f0f\u7684\u8655\u7406\u5e38\u5e38\u6703\u6210\u70ba\u958b\u767c\u8005\u9762\u81e8\u7684\u4e00\u500b\u6311\u6230\u3002\u7279\u5225\u662f\u5728\u9032\u884c\u65e5\u671f\u6bd4\u8f03\u6216\u8a08\u7b97\u6642\uff0c\u82e5\u5169\u500b\u65e5\u671f\u53c3\u6578\u7684\u683c\u5f0f\u4e0d\u4e00\u81f4\uff0c\u5c07\u6703\u5c0e\u81f4\u932f\u8aa4\u6216\u4e0d\u9810\u671f\u7684\u7d50\u679c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u89e3\u6c7a Oracle \u4e2d\u5169\u500b\u65e5\u671f\u53c3\u6578\u683c\u5f0f\u4e0d\u540c\u7684\u554f\u984c\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e6%97%a5%e6%9c%9f%e6%a0%bc%e5%bc%8f%e7%9a%84%e7%90%86%e8%a7%a3-qJUAgEZfYp\">\u65e5\u671f\u683c\u5f0f\u7684\u7406\u89e3<\/h2>\n<p>\u5728 Oracle \u4e2d\uff0c\u65e5\u671f\u985e\u578b\u7684\u6578\u64da\u901a\u5e38\u4ee5 <code>DATE<\/code> \u6216 <code>TIMESTAMP<\/code> \u7684\u5f62\u5f0f\u5b58\u5132\u3002\u9019\u4e9b\u985e\u578b\u7684\u6578\u64da\u5305\u542b\u4e86\u65e5\u671f\u548c\u6642\u9593\u4fe1\u606f\u3002\u7136\u800c\uff0c\u7576\u6211\u5011\u5f9e\u7528\u6236\u8f38\u5165\u6216\u5176\u4ed6\u7cfb\u7d71\u7372\u53d6\u65e5\u671f\u6642\uff0c\u9019\u4e9b\u65e5\u671f\u53ef\u80fd\u4ee5\u5b57\u7b26\u4e32\u7684\u5f62\u5f0f\u5b58\u5728\uff0c\u4e26\u4e14\u683c\u5f0f\u53ef\u80fd\u8207 Oracle \u7684\u9810\u8a2d\u683c\u5f0f\u4e0d\u540c\u3002<\/p>\n<h2 id=\"%e5%b8%b8%e8%a6%8b%e7%9a%84%e6%97%a5%e6%9c%9f%e6%a0%bc%e5%bc%8f%e5%95%8f%e9%a1%8c-qJUAgEZfYp\">\u5e38\u898b\u7684\u65e5\u671f\u683c\u5f0f\u554f\u984c<\/h2>\n<ul>\n<li><strong>\u683c\u5f0f\u4e0d\u4e00\u81f4\uff1a<\/strong>\u4f8b\u5982\uff0c\u4e00\u500b\u65e5\u671f\u53ef\u80fd\u662f\u4ee5 &#8216;YYYY-MM-DD&#8217; \u7684\u683c\u5f0f\u8f38\u5165\uff0c\u800c\u53e6\u4e00\u500b\u5247\u662f &#8216;DD\/MM\/YYYY&#8217;\u3002<\/li>\n<li><strong>\u6642\u5340\u554f\u984c\uff1a<\/strong>\u4e0d\u540c\u7684\u7cfb\u7d71\u53ef\u80fd\u4f7f\u7528\u4e0d\u540c\u7684\u6642\u5340\uff0c\u9019\u6703\u5f71\u97ff\u5230\u65e5\u671f\u7684\u6bd4\u8f03\u3002<\/li>\n<li><strong>\u5b57\u7b26\u4e32\u8f49\u63db\uff1a<\/strong>\u7576\u5f9e\u5b57\u7b26\u4e32\u8f49\u63db\u70ba\u65e5\u671f\u6642\uff0c\u82e5\u683c\u5f0f\u4e0d\u6b63\u78ba\uff0c\u5c07\u6703\u5c0e\u81f4\u932f\u8aa4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88-qJUAgEZfYp\">\u89e3\u6c7a\u65b9\u6848<\/h2>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8-to_date-%e5%87%bd%e6%95%b8-qJUAgEZfYp\">1. \u4f7f\u7528 TO_DATE \u51fd\u6578<\/h3>\n<p>Oracle \u63d0\u4f9b\u4e86 <code>TO_DATE<\/code> \u51fd\u6578\u4f86\u5c07\u5b57\u7b26\u4e32\u8f49\u63db\u70ba\u65e5\u671f\u3002\u9019\u500b\u51fd\u6578\u5141\u8a31\u6211\u5011\u6307\u5b9a\u5b57\u7b26\u4e32\u7684\u683c\u5f0f\uff0c\u5f9e\u800c\u907f\u514d\u683c\u5f0f\u4e0d\u4e00\u81f4\u7684\u554f\u984c\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT TO_DATE('2023-10-01', 'YYYY-MM-DD') AS converted_date FROM dual;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u5c07\u5b57\u7b26\u4e32 &#8216;2023-10-01&#8217; \u8f49\u63db\u70ba Oracle \u7684\u65e5\u671f\u683c\u5f0f\uff0c\u4e26\u6307\u5b9a\u4e86\u6b63\u78ba\u7684\u683c\u5f0f\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8-to_char-%e5%87%bd%e6%95%b8-qJUAgEZfYp\">2. \u4f7f\u7528 TO_CHAR \u51fd\u6578<\/h3>\n<p>\u5982\u679c\u9700\u8981\u5c07\u65e5\u671f\u8f49\u63db\u70ba\u7279\u5b9a\u683c\u5f0f\u7684\u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>TO_CHAR<\/code> \u51fd\u6578\u3002\u9019\u5728\u9700\u8981\u5c07\u65e5\u671f\u8207\u5176\u4ed6\u5b57\u7b26\u4e32\u9032\u884c\u6bd4\u8f03\u6642\u7279\u5225\u6709\u7528\uff1a<\/p>\n<pre><code>SELECT TO_CHAR(SYSDATE, 'DD\/MM\/YYYY') AS formatted_date FROM dual;<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u5c07\u7576\u524d\u65e5\u671f\u683c\u5f0f\u5316\u70ba &#8216;DD\/MM\/YYYY&#8217; \u7684\u5f62\u5f0f\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e6%97%a5%e6%9c%9f%e6%af%94%e8%bc%83-qJUAgEZfYp\">3. \u4f7f\u7528\u65e5\u671f\u6bd4\u8f03<\/h3>\n<p>\u5728\u9032\u884c\u65e5\u671f\u6bd4\u8f03\u6642\uff0c\u78ba\u4fdd\u5169\u500b\u65e5\u671f\u90fd\u4ee5\u76f8\u540c\u7684\u683c\u5f0f\u9032\u884c\u6bd4\u8f03\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT *\nFROM your_table\nWHERE TO_DATE(your_date_column, 'DD\/MM\/YYYY') &gt; TO_DATE('2023-10-01', 'YYYY-MM-DD');<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6bd4\u8f03\u7684\u6b63\u78ba\u6027\uff0c\u907f\u514d\u56e0\u683c\u5f0f\u4e0d\u4e00\u81f4\u800c\u5c0e\u81f4\u7684\u932f\u8aa4\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-qJUAgEZfYp\">\u7d50\u8ad6<\/h2>\n<p>\u5728 Oracle \u6578\u64da\u5eab\u4e2d\uff0c\u8655\u7406\u65e5\u671f\u683c\u5f0f\u4e0d\u4e00\u81f4\u7684\u554f\u984c\u662f\u958b\u767c\u8005\u5e38\u5e38\u9700\u8981\u9762\u5c0d\u7684\u6311\u6230\u3002\u901a\u904e\u4f7f\u7528 <code>TO_DATE<\/code> \u548c <code>TO_CHAR<\/code> \u51fd\u6578\uff0c\u6211\u5011\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u4e9b\u554f\u984c\uff0c\u78ba\u4fdd\u65e5\u671f\u7684\u6b63\u78ba\u6027\u548c\u4e00\u81f4\u6027\u3002\u4e86\u89e3\u5982\u4f55\u6b63\u78ba\u8655\u7406\u65e5\u671f\u683c\u5f0f\uff0c\u5c07\u6709\u52a9\u65bc\u63d0\u9ad8\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u6e96\u78ba\u6027\u548c\u6548\u7387\u3002<\/p>\n<p>\u5982\u9700\u9032\u4e00\u6b65\u4e86\u89e3\u6709\u95dc <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u89e3\u6c7aOracle\u65e5\u671f\u4e2d\u5169\u500b\u53c3\u6578\u683c\u5f0f\u4e0d\u540c\u7684\u554f\u984c\uff0c\u63d0\u4f9b\u6709\u6548\u7684\u8f49\u63db\u65b9\u6cd5\u8207\u7bc4\u4f8b\uff0c\u78ba\u4fdd\u6578\u64da\u4e00\u81f4\u6027\u8207\u6e96\u78ba\u6027\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-93876","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/93876","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=93876"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/93876\/revisions"}],"predecessor-version":[{"id":93877,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/93876\/revisions\/93877"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=93876"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=93876"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=93876"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}