{"id":199960,"date":"2025-05-06T08:35:53","date_gmt":"2025-05-06T00:35:53","guid":{"rendered":"https:\/\/server.hk\/cnblog\/199960\/"},"modified":"2025-05-06T08:35:53","modified_gmt":"2025-05-06T00:35:53","slug":"%e6%b7%b1%e5%85%a5%e8%a7%a3%e6%9e%90%e5%9c%a8oracle%e6%95%b0%e6%8d%ae%e5%ba%93%e4%b8%ad%e4%bf%ae%e6%94%b9%e7%b3%bb%e7%bb%9f%e6%97%a5%e6%9c%9f%e7%9a%84%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/199960\/","title":{"rendered":"\u6df1\u5165\u89e3\u6790\u5728Oracle\u6570\u636e\u5e93\u4e2d\u4fee\u6539\u7cfb\u7edf\u65e5\u671f\u7684\u65b9\u6cd5"},"content":{"rendered":"

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

\u6df1\u5165\u89e3\u6790\u5728Oracle\u6570\u636e\u5e93\u4e2d\u4fee\u6539\u7cfb\u7edf\u65e5\u671f\u7684\u65b9\u6cd5<\/h1>\n<\/p>\n

Oracle\u6570\u636e\u5e93\u4e2d\u4fee\u6539\u7cfb\u7edf\u65e5\u671f\u65b9\u6cd5\u8be6\u89e3<\/p>\n

\u5728Oracle\u6570\u636e\u5e93\u4e2d\uff0c\u4fee\u6539\u7cfb\u7edf\u65e5\u671f\u7684\u65b9\u6cd5\u4e3b\u8981\u6d89\u53ca\u5230\u4fee\u6539NLS_DATE_FORMAT\u53c2\u6570\u548c\u4f7f\u7528SYSDATE\u51fd\u6570\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u4e24\u79cd\u65b9\u6cd5\u53ca\u5176\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\uff0c\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u638c\u63e1\u5728Oracle\u6570\u636e\u5e93\u4e2d\u4fee\u6539\u7cfb\u7edf\u65e5\u671f\u7684\u64cd\u4f5c\u3002<\/p>\n

\u4e00\u3001\u4fee\u6539NLS_DATE_FORMAT\u53c2\u6570\u65b9\u6cd5<\/p>\n

NLS_DATE_FORMAT\u662fOracle\u6570\u636e\u5e93\u4e2d\u63a7\u5236\u65e5\u671f\u683c\u5f0f\u7684\u53c2\u6570\uff0c\u901a\u8fc7\u4fee\u6539\u8be5\u53c2\u6570\u53ef\u4ee5\u6539\u53d8\u6570\u636e\u5e93\u4e2d\u65e5\u671f\u7684\u663e\u793a\u683c\u5f0f\uff0c\u4ece\u800c\u5b9e\u73b0\u4fee\u6539\u7cfb\u7edf\u65e5\u671f\u7684\u6548\u679c\u3002\u4e0b\u9762\u6211\u4eec\u4ee5\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u6765\u5c55\u793a\u5982\u4f55\u4fee\u6539NLS_DATE_FORMAT\u53c2\u6570\u6765\u6539\u53d8\u7cfb\u7edf\u65e5\u671f\u663e\u793a\u683c\u5f0f\uff1a<\/p>\n

    \n
  1. \n

    \u67e5\u8be2\u5f53\u524d\u7684NLS_DATE_FORMAT\u53c2\u6570\u503c<\/p>\n

    SELECT * FROM v$nls_parameters WHERE parameter = 'NLS_DATE_FORMAT';<\/pre>\n<\/li>\n
  2. \n
    \u4fee\u6539NLS_DATE_FORMAT\u53c2\u6570\u4e3a\u81ea\u5b9a\u4e49\u7684\u65e5\u671f\u683c\u5f0f<\/p>\n
    ALTER SESSION SET NLS_DATE_FORMAT = 'YYYY-MM-DD HH24:MI:SS';<\/pre>\n<\/li>\n<\/ol>\n
    \u901a\u8fc7\u4ee5\u4e0a\u4ee3\u7801\u793a\u4f8b\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u5982\u4f55\u901a\u8fc7ALTER SESSION\u8bed\u53e5\u6765\u4fee\u6539NLS_DATE_FORMAT\u53c2\u6570\uff0c\u5b9e\u73b0\u6539\u53d8\u7cfb\u7edf\u65e5\u671f\u663e\u793a\u683c\u5f0f\u7684\u76ee\u7684\u3002<\/p>\n
    \u4e8c\u3001\u4f7f\u7528SYSDATE\u51fd\u6570\u4fee\u6539\u7cfb\u7edf\u65e5\u671f<\/p>\n
    \u9664\u4e86\u4fee\u6539NLS_DATE_FORMAT\u53c2\u6570\u5916\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528SYSDATE\u51fd\u6570\u6765\u4fee\u6539\u7cfb\u7edf\u65e5\u671f\u3002SYSDATE\u51fd\u6570\u8fd4\u56de\u5f53\u524d\u65e5\u671f\u548c\u65f6\u95f4\uff0c\u53ef\u4ee5\u7528\u4e8e\u66f4\u65b0\u6570\u636e\u5e93\u8868\u4e2d\u7684\u65e5\u671f\u5b57\u6bb5\u6216\u8005\u5728SQL\u8bed\u53e5\u4e2d\u76f4\u63a5\u4f7f\u7528\u3002\u4e0b\u9762\u4ee5\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u5c55\u793a\u5982\u4f55\u4f7f\u7528SYSDATE\u51fd\u6570\u6765\u4fee\u6539\u7cfb\u7edf\u65e5\u671f\uff1a<\/p>\n
      \n
    1. \n
      \u5728SELECT\u8bed\u53e5\u4e2d\u4f7f\u7528SYSDATE\u51fd\u6570\u67e5\u8be2\u5f53\u524d\u65e5\u671f\u548c\u65f6\u95f4<\/p>\n
      SELECT SYSDATE FROM dual;<\/pre>\n<\/li>\n
    2. \n
      \u5728UPDATE\u8bed\u53e5\u4e2d\u4f7f\u7528SYSDATE\u51fd\u6570\u66f4\u65b0\u8868\u4e2d\u7684\u65e5\u671f\u5b57\u6bb5<\/p>\n
      UPDATE table_name SET date_column = SYSDATE WHERE condition;<\/pre>\n<\/li>\n<\/ol>\n
      \u901a\u8fc7\u4ee5\u4e0a\u4ee3\u7801\u793a\u4f8b\uff0c\u6211\u4eec\u53ef\u4ee5\u53d1\u73b0\u5728SELECT\u548cUPDATE\u8bed\u53e5\u4e2d\u90fd\u53ef\u4ee5\u7075\u6d3b\u4f7f\u7528SYSDATE\u51fd\u6570\u6765\u83b7\u53d6\u5f53\u524d\u65e5\u671f\u548c\u65f6\u95f4\uff0c\u5e76\u5b9e\u73b0\u5bf9\u7cfb\u7edf\u65e5\u671f\u7684\u4fee\u6539\u64cd\u4f5c\u3002<\/p>\n
      \u603b\u7ed3\uff1a<\/p>\n
      \u672c\u6587\u8be6\u7ec6\u4ecb\u7ecd\u4e86\u5728Oracle\u6570\u636e\u5e93\u4e2d\u4fee\u6539\u7cfb\u7edf\u65e5\u671f\u7684\u4e24\u79cd\u65b9\u6cd5\uff1a\u4fee\u6539NLS_DATE_FORMAT\u53c2\u6570\u548c\u4f7f\u7528SYSDATE\u51fd\u6570\u3002\u8bfb\u8005\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u6765\u4fee\u6539\u7cfb\u7edf\u65e5\u671f\uff0c\u5728\u5b9e\u9645\u4f7f\u7528\u8fc7\u7a0b\u4e2d\u9700\u8981\u6ce8\u610f\u4fee\u6539\u7684\u8303\u56f4\u548c\u5f71\u54cd\u8303\u56f4\uff0c\u907f\u514d\u9020\u6210\u4e0d\u5fc5\u8981\u7684\u95ee\u9898\u3002\u5e0c\u671b\u672c\u6587\u5bf9\u8bfb\u8005\u5728Oracle\u6570\u636e\u5e93\u4e2d\u4fee\u6539\u7cfb\u7edf\u65e5\u671f\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n
      \u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300a\u6df1\u5165\u89e3\u6790\u5728Oracle\u6570\u636e\u5e93\u4e2d\u4fee\u6539\u7cfb\u7edf\u65e5\u671f\u7684\u65b9\u6cd5\u300b\u7684\u4ecb\u7ecd\u5e94\u8be5\u8ba9\u4f60\u6536\u83b7\u591a\u591a\u4e86\u5427\uff01\u6b22\u8fce\u5927\u5bb6\u6536\u85cf\u6216\u5206\u4eab\u7ed9\u66f4\u591a\u9700\u8981\u5b66\u4e60\u7684\u670b\u53cb\u5427~\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\u4e5f\u4f1a\u53d1\u5e03\u6570\u636e\u5e93\u76f8\u5173\u77e5\u8bc6\uff0c\u5feb\u6765\u5173\u6ce8\u5427\uff01<\/p>\n
      \n
      \n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
      \u6df1\u5165\u89e3\u6790\u5728Oracle\u6570\u636e\u5e93\u4e2d\u4fee...<\/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-199960","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199960","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=199960"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199960\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=199960"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=199960"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=199960"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}