{"id":200176,"date":"2025-05-06T10:30:35","date_gmt":"2025-05-06T02:30:35","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200176\/"},"modified":"2025-05-06T10:30:35","modified_gmt":"2025-05-06T02:30:35","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8oracle-case-when%e8%af%ad%e5%8f%a5%e5%b0%86%e6%97%a5%e6%9c%9f%e8%8c%83%e5%9b%b4%e5%86%85%e6%9f%a5%e8%af%a2%e5%90%88%e5%b9%b6%e4%b8%ba%e4%b8%80%e6%9d%a1%e8%af%ad","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200176\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528Oracle CASE WHEN\u8bed\u53e5\u5c06\u65e5\u671f\u8303\u56f4\u5185\u67e5\u8be2\u5408\u5e76\u4e3a\u4e00\u6761\u8bed\u53e5?"},"content":{"rendered":"

<\/b> <\/p>\n

\u5982\u4f55\u4f7f\u7528Oracle CASE WHEN\u8bed\u53e5\u5c06\u65e5\u671f\u8303\u56f4\u5185\u67e5\u8be2\u5408\u5e76\u4e3a\u4e00\u6761\u8bed\u53e5?<\/h1>\n<\/p>\n

<\/p>\n

oracle\u6570\u636e\u5e93\u5408\u5e76\u65e5\u671f\u8303\u56f4\u5185\u67e5\u8be2<\/strong><\/p>\n

\u60f3\u8981\u5c06\u4e09\u6761\u5206\u522b\u9488\u5bf9\u5f53\u65e5\u3001\u5f53\u6708\u548c\u5f53\u5e74\u7684\u67e5\u8be2\u5408\u5e76\u4e3a\u4e00\u6761\u67e5\u8be2\uff0c\u53ef\u4ee5\u4f7f\u7528oracle\u7684case when\u8bed\u53e5\u3002\u8be5\u8bed\u53e5\u5141\u8bb8\u5728\u7ed9\u5b9a\u6761\u4ef6\u6ee1\u8db3\u65f6\u8ba1\u7b97\u4e0d\u540c\u7684\u503c\u3002<\/p>\n

select count(case when to_char(cf_acctime, 'yyyy-MM-dd') > to_char(sysdate, 'yyyy-MM-dd') then 1 end) as flowNum,\n       count(case when to_char(cf_acctime, 'yyyy-MM') > to_char(sysdate, 'yyyy-MM') then 1 end)       as flowNumMonth,\n       count(case when to_char(cf_acctime, 'yyyy') > to_char(sysdate, 'yyyy') then 1 end)             as flowNumTotal\nfrom ccform_debit_all<\/pre>\n
\u89e3\u91ca\uff1a<\/strong><\/p>\n
    \n
  • to_char(cf_acctime, ‘yyyy-mm-dd’) \u548c to_char(sysdate, ‘yyyy-mm-dd’) \u5c06 cf_acctime \u548c sysdate \u8f6c\u6362\u4e3a\u65e5\u671f\u5b57\u7b26\u4e32\uff0c\u7528\u4e8e\u6bd4\u8f83\u65e5\u671f\u3002<\/li>\n
  • \n
    case when \u8bed\u53e5\u68c0\u67e5\u4ee5\u4e0b\u6761\u4ef6\uff1a<\/p>\n
      \n
    • to_char(cf_acctime, ‘yyyy-mm-dd’) > to_char(sysdate, ‘yyyy-mm-dd’)\uff1a\u5f53\u65e5<\/li>\n
    • to_char(cf_acctime, ‘yyyy-mm’) > to_char(sysdate, ‘yyyy-mm’)\uff1a\u5f53\u6708<\/li>\n
    • to_char(cf_acctime, ‘yyyy’) > to_char(sysdate, ‘yyyy’)\uff1a\u5f53\u5e74<\/li>\n<\/ul>\n<\/li>\n
    • \u5982\u679c\u6761\u4ef6\u6ee1\u8db3\uff0ccount \u51fd\u6570\u8ba1\u7b97\u6ee1\u8db3\u8be5\u6761\u4ef6\u7684\u884c\u6570\u5e76\u5c06\u5176\u5b58\u50a8\u5728\u76f8\u5e94\u7684\u5217\u4e2d\uff1aflownum\u3001flownummonth \u548c flownumtotal\u3002<\/li>\n<\/ul>\n
      \u4ee5\u4e0a\u5c31\u662f\u300a\u5982\u4f55\u4f7f\u7528Oracle CASE WHEN\u8bed\u53e5\u5c06\u65e5\u671f\u8303\u56f4\u5185\u67e5\u8be2\u5408\u5e76\u4e3a\u4e00\u6761\u8bed\u53e5?\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8e\u7684\u8d44\u6599\u8bf7\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff01<\/p>\n
      \n
      \n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
      \u5982\u4f55\u4f7f\u7528Oracle CASE ...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-200176","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200176","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=200176"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200176\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200176"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200176"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200176"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}