{"id":5050,"date":"2024-11-14T11:05:40","date_gmt":"2024-11-14T03:05:40","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5050\/"},"modified":"2024-11-14T11:05:40","modified_gmt":"2024-11-14T03:05:40","slug":"oracle-datediff%e5%87%bd%e6%95%b0%e6%80%8e%e4%b9%88%e7%94%a8","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5050\/","title":{"rendered":"oracle datediff\u51fd\u6570\u600e\u4e48\u7528"},"content":{"rendered":"

\n oracle datediff \u51fd\u6570\u8ba1\u7b97\u4e24\u4e2a\u65e5\u671f\u4e4b\u95f4\u7684\u5929\u6570\u5dee\u5f02\u3002\u8bed\u6cd5\uff1adatediff(interval, start_date, end_date)\uff0c\u5176\u4e2d interval \u6307\u5b9a\u8981\u8ba1\u7b97\u7684\u5929\u6570\u7c7b\u578b\uff08\u5982 year\u3001month\u3001day\uff09\u3001start_date \u4e3a\u8d77\u59cb\u65e5\u671f\u3001end_date \u4e3a\u7ed3\u675f\u65e5\u671f\u3002\u9700\u8981\u5f00\u542f\u517c\u5bb9\u6027\u6a21\u5f0f\uff08compatible\uff09\u3001\u6307\u5b9a\u5929\u6570\u7c7b\u578b\u3001\u786e\u4fdd\u65e5\u671f\u6709\u6548\u3001\u8003\u8651\u95f0\u5e74\u3001\u5904\u7406 null \u503c\u3002\n<\/p><\/blockquote>\n

\"oracle<\/p>\n

Oracle DATEDIFF \u51fd\u6570\u4f7f\u7528\u6307\u5357<\/strong><\/p>\n

\u76ee\u7684\uff1a<\/strong>
Oracle DATEDIFF \u51fd\u6570\u8ba1\u7b97\u4e24\u4e2a\u65e5\u671f\u4e4b\u95f4\u7684\u5929\u6570\u5dee\u5f02\u3002<\/p>\n

\u8bed\u6cd5\uff1a<\/strong><\/p>\n

DATEDIFF(interval, start_date, end_date)<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u53c2\u6570\uff1a<\/strong><\/p>\n
    \n
  • \n
    interval\uff1a<\/strong>\u8981\u8ba1\u7b97\u7684\u5929\u6570\u7c7b\u578b\uff0c\u53ef\u4ee5\u662f\u4ee5\u4e0b\u4e4b\u4e00\uff1a<\/p>\n
      \n
    • YEAR<\/li>\n
    • MONTH<\/li>\n
    • QUARTER<\/li>\n
    • DAY<\/li>\n
    • HOUR<\/li>\n
    • MINUTE<\/li>\n
    • SECOND<\/li>\n<\/ul>\n<\/li>\n
    •  start_date\uff1a<\/strong>\u8d77\u59cb\u65e5\u671f<\/li>\n
    •  end_date\uff1a<\/strong>\u7ed3\u675f\u65e5\u671f<\/li>\n<\/ul>\n
      \u7528\u6cd5\uff1a<\/strong><\/p>\n
        \n
      1.  \u5f00\u542f\u517c\u5bb9\u6027\u6a21\u5f0f\uff1a<\/strong>
        \u8981\u4f7f\u7528 DATEDIFF \u51fd\u6570\uff0c\u9700\u8981\u5f00\u542f Oracle 11.2.0.1+ \u4e2d\u7684\u517c\u5bb9\u6027\u6a21\u5f0f\u3002\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e\u4f1a\u8bdd\u53c2\u6570\u6216\u521d\u59cb\u5316\u53c2\u6570 compatible \u6765\u5b9e\u73b0\u3002<\/li>\n
      2.  \u6307\u5b9a\u5929\u6570\u7c7b\u578b\uff1a<\/strong>
        \u660e\u786e\u6307\u5b9a\u8981\u8ba1\u7b97\u7684\u65e5\u671f\u7c7b\u578b\u7684 “interval” \u53c2\u6570\u975e\u5e38\u91cd\u8981\u3002\u4f8b\u5982\uff0c\u8981\u8ba1\u7b97\u5929\u6570\u5dee\u5f02\uff0c\u6307\u5b9a “DAY”\u3002<\/li>\n
      3.  \u786e\u4fdd\u65e5\u671f\u6709\u6548\uff1a<\/strong>
        \u786e\u4fdd start_date \u548c end_date \u662f\u6709\u6548\u7684\u65e5\u671f\uff0c\u683c\u5f0f\u4e3a ‘YYYY-MM-DD’\u3002<\/li>\n
      4.  \u8003\u8651\u95f0\u5e74\uff1a<\/strong>
        DATEDIFF \u51fd\u6570\u4f1a\u8003\u8651\u95f0\u5e74\u7684\u5f71\u54cd\uff0c\u56e0\u6b64\u8ba1\u7b97\u7684\u5929\u6570\u5dee\u5f02\u662f\u51c6\u786e\u7684\u3002<\/li>\n
      5.  \u5904\u7406 NULL \u503c\uff1a<\/strong>
        \u5982\u679c start_date \u6216 end_date \u4e3a NULL\uff0cDATEDIFF \u51fd\u6570\u5c06\u8fd4\u56de NULL\u3002<\/li>\n<\/ol>\n
        \u793a\u4f8b\uff1a<\/strong><\/p>\n
        SELECT DATEDIFF('DAY', '2023-03-01', '2023-03-15') FROM dual;\n\n-- \u8f93\u51fa\uff1a14<\/pre>\n
         \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
        \u6ce8\u610f\uff1a<\/strong><\/p>\n
          \n
        • DATEDIFF \u51fd\u6570\u53ea\u4f1a\u8ba1\u7b97\u76f8\u5bf9\u4e8e\u5e74\u3001\u6708\u3001\u65e5\u7684\u90e8\u5206\u7684\u5929\u6570\u5dee\u5f02\u3002<\/li>\n
        • DATEDIFF \u51fd\u6570\u4e0d\u8003\u8651\u65e5\u671f\u4e2d\u7684\u65f6\u95f4\u90e8\u5206\u3002<\/li>\n<\/ul>\n
          \u4ee5\u4e0a\u5c31\u662f datediff\u51fd\u6570\u600e\u4e48\u7528\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":"
          oracle datediff \u51fd\u6570\u8ba1\u7b97\u4e24\u4e2a\u65e5\u671f\u4e4b\u95f4\u7684\u5929\u6570\u5dee\u5f02\u3002\u8bed\u6cd5\uff1adatediff(interval, start_date, end_date)\uff0c\u5176\u4e2d interval \u6307\u5b9a\u8981\u8ba1\u7b97\u7684\u5929\u6570\u7c7b\u578b\uff08\u5982 year\u3001month\u3001day\uff09\u3001start_date \u4e3a\u8d77\u59cb\u65e5\u671f\u3001end_date \u4e3a\u7ed3\u675f\u65e5\u671f\u3002\u9700\u8981\u5f00\u542f\u517c\u5bb9\u6027\u6a21\u5f0f\uff08compatible\uff09\u3001\u6307\u5b9a\u5929\u6570\u7c7b\u578b\u3001\u786e\u4fdd\u65e5\u671f\u6709\u6548\u3001\u8003\u8651\u95f0\u5e74\u3001\u5904\u7406 null \u503c\u3002 Oracle DATEDIFF \u51fd\u6570\u4f7f\u7528\u6307\u5357 \u76ee\u7684\uff1aOracle DATEDIFF \u51fd\u6570\u8ba1\u7b97\u4e24\u4e2a\u65e5\u671f\u4e4b\u95f4\u7684\u5929\u6570\u5dee\u5f02\u3002 \u8bed\u6cd5\uff1a DATEDIFF(interval, start_date, end_date) \u767b\u5f55\u540e\u590d\u5236 \u53c2\u6570\uff1a interval\uff1a\u8981\u8ba1\u7b97\u7684\u5929\u6570\u7c7b\u578b\uff0c\u53ef\u4ee5\u662f\u4ee5\u4e0b\u4e4b\u4e00\uff1a YEAR MONTH QUARTER DAY HOUR MINUTE SECOND start_date\uff1a\u8d77\u59cb\u65e5\u671f end_date\uff1a\u7ed3\u675f\u65e5\u671f \u7528\u6cd5\uff1a \u5f00\u542f\u517c\u5bb9\u6027\u6a21\u5f0f\uff1a\u8981\u4f7f\u7528 DATEDIFF \u51fd\u6570\uff0c\u9700\u8981\u5f00\u542f Oracle 11.2.0.1+ \u4e2d\u7684\u517c\u5bb9\u6027\u6a21\u5f0f\u3002\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e\u4f1a\u8bdd\u53c2\u6570\u6216\u521d\u59cb\u5316\u53c2\u6570 compatible \u6765\u5b9e\u73b0\u3002 \u6307\u5b9a\u5929\u6570\u7c7b\u578b\uff1a\u660e\u786e\u6307\u5b9a\u8981\u8ba1\u7b97\u7684\u65e5\u671f\u7c7b\u578b\u7684 “interval” \u53c2\u6570\u975e\u5e38\u91cd\u8981\u3002\u4f8b\u5982\uff0c\u8981\u8ba1\u7b97\u5929\u6570\u5dee\u5f02\uff0c\u6307\u5b9a “DAY”\u3002 \u786e\u4fdd\u65e5\u671f\u6709\u6548\uff1a\u786e\u4fdd start_date \u548c end_date \u662f\u6709\u6548\u7684\u65e5\u671f\uff0c\u683c\u5f0f\u4e3a ‘YYYY-MM-DD’\u3002 \u8003\u8651\u95f0\u5e74\uff1aDATEDIFF \u51fd\u6570\u4f1a\u8003\u8651\u95f0\u5e74\u7684\u5f71\u54cd\uff0c\u56e0\u6b64\u8ba1\u7b97\u7684\u5929\u6570\u5dee\u5f02\u662f\u51c6\u786e\u7684\u3002 […]<\/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-5050","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5050","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=5050"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5050\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5050"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5050"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5050"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}