{"id":93878,"date":"2024-10-19T17:40:19","date_gmt":"2024-10-19T09:40:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/93878\/"},"modified":"2024-10-19T17:40:20","modified_gmt":"2024-10-19T09:40:20","slug":"oracle-date%e9%a1%9e%e5%9e%8b%e5%ad%97%e6%ae%b5%e8%99%95%e7%90%86%e7%9a%84%e5%8a%9f%e8%83%bd%e4%bb%8b%e7%b4%b9","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/93878\/","title":{"rendered":"Oracle date\u985e\u578b\u5b57\u6bb5\u8655\u7406\u7684\u529f\u80fd\u4ecb\u7d39"},"content":{"rendered":"<h1 id=\"oracle-date%e9%a1%9e%e5%9e%8b%e5%ad%97%e6%ae%b5%e8%99%95%e7%90%86%e7%9a%84%e5%8a%9f%e8%83%bd%e4%bb%8b%e7%b4%b9-JuAnUrvyZS\">Oracle Date\u985e\u578b\u5b57\u6bb5\u8655\u7406\u7684\u529f\u80fd\u4ecb\u7d39<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u65e5\u671f\u548c\u6642\u9593\u7684\u8655\u7406\u662f\u975e\u5e38\u91cd\u8981\u7684\u4e00\u74b0\u3002Oracle\u8cc7\u6599\u5eab\u63d0\u4f9b\u4e86\u591a\u7a2e\u65e5\u671f\u985e\u578b\u5b57\u6bb5\u7684\u8655\u7406\u529f\u80fd\uff0c\u8b93\u958b\u767c\u8005\u80fd\u5920\u6709\u6548\u5730\u7ba1\u7406\u548c\u64cd\u4f5c\u6642\u9593\u6578\u64da\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eOracle\u4e2d\u7684\u65e5\u671f\u985e\u578b\u5b57\u6bb5\u53ca\u5176\u76f8\u95dc\u529f\u80fd\u3002<\/p>\n<h2 id=\"oracle%e4%b8%ad%e7%9a%84%e6%97%a5%e6%9c%9f%e9%a1%9e%e5%9e%8b-JuAnUrvyZS\">Oracle\u4e2d\u7684\u65e5\u671f\u985e\u578b<\/h2>\n<p>\u5728Oracle\u8cc7\u6599\u5eab\u4e2d\uff0c\u4e3b\u8981\u7684\u65e5\u671f\u985e\u578b\u6709\u4ee5\u4e0b\u5e7e\u7a2e\uff1a<\/p>\n<ul>\n<li><strong>DATE<\/strong>: \u6b64\u985e\u578b\u7528\u65bc\u5b58\u5132\u65e5\u671f\u548c\u6642\u9593\uff0c\u7bc4\u570d\u5f9e\u516c\u5143\u524d4712\u5e74\u5230\u516c\u51439999\u5e74\uff0c\u7cbe\u5ea6\u70ba\u79d2\u3002<\/li>\n<li><strong>TIMESTAMP<\/strong>: \u6b64\u985e\u578b\u63d0\u4f9b\u4e86\u66f4\u9ad8\u7684\u7cbe\u5ea6\uff0c\u80fd\u5920\u5b58\u5132\u5230\u5fae\u79d2\u7d1a\u5225\u7684\u6642\u9593\u3002<\/li>\n<li><strong>INTERVAL<\/strong>: \u6b64\u985e\u578b\u7528\u65bc\u8868\u793a\u6642\u9593\u9593\u9694\uff0c\u53ef\u4ee5\u662f\u5e74\u6216\u5929\u7684\u9593\u9694\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%97%a5%e6%9c%9f%e9%a1%9e%e5%9e%8b%e5%ad%97%e6%ae%b5%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%93%8d%e4%bd%9c-JuAnUrvyZS\">\u65e5\u671f\u985e\u578b\u5b57\u6bb5\u7684\u57fa\u672c\u64cd\u4f5c<\/h2>\n<p>\u5728Oracle\u4e2d\uff0c\u5c0d\u65e5\u671f\u985e\u578b\u5b57\u6bb5\u7684\u64cd\u4f5c\u4e3b\u8981\u5305\u62ec\u63d2\u5165\u3001\u67e5\u8a62\u3001\u66f4\u65b0\u548c\u522a\u9664\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u7684\u64cd\u4f5c\u793a\u4f8b\uff1a<\/p>\n<h3 id=\"%e6%8f%92%e5%85%a5%e6%97%a5%e6%9c%9f%e6%95%b8%e6%93%9a-JuAnUrvyZS\">\u63d2\u5165\u65e5\u671f\u6578\u64da<\/h3>\n<pre><code>INSERT INTO employees (name, hire_date) \nVALUES ('John Doe', TO_DATE('2023-10-01', 'YYYY-MM-DD'));<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u4f7f\u7528\u4e86TO_DATE\u51fd\u6578\u5c07\u5b57\u7b26\u4e32\u8f49\u63db\u70ba\u65e5\u671f\u683c\u5f0f\uff0c\u7136\u5f8c\u63d2\u5165\u5230employees\u8868\u4e2d\u3002<\/p>\n<h3 id=\"%e6%9f%a5%e8%a9%a2%e6%97%a5%e6%9c%9f%e6%95%b8%e6%93%9a-JuAnUrvyZS\">\u67e5\u8a62\u65e5\u671f\u6578\u64da<\/h3>\n<pre><code>SELECT * FROM employees \nWHERE hire_date &gt; TO_DATE('2023-01-01', 'YYYY-MM-DD');<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u57282023\u5e741\u67081\u65e5\u4e4b\u5f8c\u88ab\u96c7\u7528\u7684\u54e1\u5de5\u3002<\/p>\n<h3 id=\"%e6%9b%b4%e6%96%b0%e6%97%a5%e6%9c%9f%e6%95%b8%e6%93%9a-JuAnUrvyZS\">\u66f4\u65b0\u65e5\u671f\u6578\u64da<\/h3>\n<pre><code>UPDATE employees \nSET hire_date = TO_DATE('2023-09-01', 'YYYY-MM-DD') \nWHERE name = 'John Doe';<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u66f4\u65b0\u540d\u70baJohn Doe\u7684\u54e1\u5de5\u7684\u96c7\u7528\u65e5\u671f\u3002<\/p>\n<h3 id=\"%e5%88%aa%e9%99%a4%e6%97%a5%e6%9c%9f%e6%95%b8%e6%93%9a-JuAnUrvyZS\">\u522a\u9664\u65e5\u671f\u6578\u64da<\/h3>\n<pre><code>DELETE FROM employees \nWHERE hire_date &lt; TO_DATE('2020-01-01', 'YYYY-MM-DD');<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u522a\u9664\u6240\u6709\u57282020\u5e741\u67081\u65e5\u4e4b\u524d\u88ab\u96c7\u7528\u7684\u54e1\u5de5\u8a18\u9304\u3002<\/p>\n<h2 id=\"%e6%97%a5%e6%9c%9f%e5%87%bd%e6%95%b8%e7%9a%84%e4%bd%bf%e7%94%a8-JuAnUrvyZS\">\u65e5\u671f\u51fd\u6578\u7684\u4f7f\u7528<\/h2>\n<p>Oracle\u63d0\u4f9b\u4e86\u591a\u7a2e\u5167\u5efa\u51fd\u6578\u4f86\u8655\u7406\u65e5\u671f\u985e\u578b\u5b57\u6bb5\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u65e5\u671f\u51fd\u6578\uff1a<\/p>\n<ul>\n<li><strong>SYSDATE<\/strong>: \u8fd4\u56de\u7576\u524d\u7684\u7cfb\u7d71\u65e5\u671f\u548c\u6642\u9593\u3002<\/li>\n<li><strong>ADD_MONTHS<\/strong>: \u5c07\u6307\u5b9a\u7684\u6708\u4efd\u6578\u52a0\u5230\u65e5\u671f\u4e0a\u3002<\/li>\n<li><strong>MONTHS_BETWEEN<\/strong>: \u8a08\u7b97\u5169\u500b\u65e5\u671f\u4e4b\u9593\u7684\u6708\u4efd\u6578\u3002<\/li>\n<li><strong>TRUNC<\/strong>: \u5c07\u65e5\u671f\u622a\u65b7\u5230\u6307\u5b9a\u7684\u7cbe\u5ea6\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e4%bd%bf%e7%94%a8%e6%97%a5%e6%9c%9f%e5%87%bd%e6%95%b8-JuAnUrvyZS\">\u793a\u4f8b\uff1a\u4f7f\u7528\u65e5\u671f\u51fd\u6578<\/h3>\n<pre><code>SELECT SYSDATE, \n       ADD_MONTHS(SYSDATE, 3) AS future_date, \n       MONTHS_BETWEEN(SYSDATE, TO_DATE('2020-01-01', 'YYYY-MM-DD')) AS months_diff \nFROM dual;<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u8fd4\u56de\u7576\u524d\u65e5\u671f\u3001\u4e09\u500b\u6708\u5f8c\u7684\u65e5\u671f\u4ee5\u53ca\u5f9e2020\u5e741\u67081\u65e5\u5230\u73fe\u5728\u7684\u6708\u4efd\u5dee\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-JuAnUrvyZS\">\u7d50\u8ad6<\/h2>\n<p>Oracle\u8cc7\u6599\u5eab\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u65e5\u671f\u985e\u578b\u5b57\u6bb5\u8655\u7406\u529f\u80fd\uff0c\u8b93\u958b\u767c\u8005\u80fd\u5920\u9748\u6d3b\u5730\u7ba1\u7406\u6642\u9593\u6578\u64da\u3002\u7121\u8ad6\u662f\u57fa\u672c\u7684\u63d2\u5165\u3001\u67e5\u8a62\u3001\u66f4\u65b0\u548c\u522a\u9664\u64cd\u4f5c\uff0c\u9084\u662f\u4f7f\u7528\u5167\u5efa\u7684\u65e5\u671f\u51fd\u6578\uff0cOracle\u90fd\u80fd\u5920\u6eff\u8db3\u5404\u7a2e\u9700\u6c42\u3002\u5c0d\u65bc\u9700\u8981\u8655\u7406\u5927\u91cf\u6642\u9593\u6578\u64da\u7684\u61c9\u7528\u7a0b\u5f0f\u4f86\u8aaa\uff0c\u638c\u63e1\u9019\u4e9b\u529f\u80fd\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc\u65bc<code><a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a><\/code>\u548c<code><a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a><\/code>\u7684\u8cc7\u8a0a\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3Oracle\u65e5\u671f\u985e\u578b\u5b57\u6bb5\u7684\u8655\u7406\u529f\u80fd\uff0c\u5305\u62ec\u683c\u5f0f\u5316\u3001\u8a08\u7b97\u548c\u8f49\u63db\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\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-93878","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/93878","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=93878"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/93878\/revisions"}],"predecessor-version":[{"id":93879,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/93878\/revisions\/93879"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=93878"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=93878"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=93878"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}