{"id":199791,"date":"2025-05-06T10:50:31","date_gmt":"2025-05-06T02:50:31","guid":{"rendered":"https:\/\/server.hk\/cnblog\/199791\/"},"modified":"2025-05-06T10:50:31","modified_gmt":"2025-05-06T02:50:31","slug":"%e4%bb%8e%e5%88%9d%e5%ad%a6%e5%88%b0%e7%86%9f%e7%bb%83%ef%bc%9a%e6%8e%8c%e6%8f%a1oracle%e5%87%bd%e6%95%b0%e7%9a%84%e6%8a%80%e5%b7%a7","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/199791\/","title":{"rendered":"\u4ece\u521d\u5b66\u5230\u719f\u7ec3\uff1a\u638c\u63e1Oracle\u51fd\u6570\u7684\u6280\u5de7"},"content":{"rendered":"

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

\u4ece\u521d\u5b66\u5230\u719f\u7ec3\uff1a\u638c\u63e1Oracle\u51fd\u6570\u7684\u6280\u5de7<\/h1>\n

\u5728\u6570\u636e\u5e93\u5b9e\u6218\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f1a\u9047\u5230\u4e00\u4e9b\u8fd9\u6837\u90a3\u6837\u7684\u95ee\u9898\uff0c\u7136\u540e\u8981\u5361\u597d\u534a\u5929\uff0c\u7b49\u95ee\u9898\u89e3\u51b3\u4e86\u624d\u53d1\u73b0\u539f\u6765\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u662f\u6ca1\u6709\u638c\u63e1\u597d\u3002\u4eca\u5929\u4e3b\u673a\u5b9d\u8d1d\u5c31\u6574\u7406\u5206\u4eab\u300a\u4ece\u521d\u5b66\u5230\u719f\u7ec3\uff1a\u638c\u63e1Oracle\u51fd\u6570\u7684\u6280\u5de7\u300b\uff0c\u804a\u804a\uff0c\u5e0c\u671b\u53ef\u4ee5\u5e2e\u52a9\u5230\u6b63\u5728\u52aa\u529b\u8d5a\u94b1\u7684\u4f60\u3002<\/p>\n

\u4ece\u5165\u95e8\u5230\u7cbe\u901a\uff1a\u638c\u63e1Oracle\u51fd\u6570\u7684\u4f7f\u7528\u6280\u5de7<\/p>\n

Oracle\u662f\u4e00\u6b3e\u5e7f\u6cdb\u5e94\u7528\u4e8e\u4f01\u4e1a\u7ea7\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\u7684\u8f6f\u4ef6\uff0c\u5176\u5f3a\u5927\u7684\u51fd\u6570\u529f\u80fd\u53ef\u4ee5\u5e2e\u52a9\u6570\u636e\u5e93\u7ba1\u7406\u5458\u548c\u5f00\u53d1\u4eba\u5458\u66f4\u9ad8\u6548\u5730\u5904\u7406\u6570\u636e\u548c\u5b9e\u73b0\u4e1a\u52a1\u903b\u8f91\u3002\u672c\u6587\u5c06\u4ecb\u7ecdOracle\u51fd\u6570\u7684\u57fa\u672c\u6982\u5ff5\u548c\u4f7f\u7528\u6280\u5de7\uff0c\u5e76\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u638c\u63e1\u3002<\/p>\n

\u4e00\u3001\u4ec0\u4e48\u662fOracle\u51fd\u6570\uff1f<\/p>\n

\u5728Oracle\u6570\u636e\u5e93\u4e2d\uff0c\u51fd\u6570\u662f\u4e00\u79cd\u80fd\u591f\u63a5\u6536\u53c2\u6570\uff0c\u8fdb\u884c\u8ba1\u7b97\u6216\u5904\u7406\uff0c\u5e76\u8fd4\u56de\u7ed3\u679c\u7684\u4ee3\u7801\u5757\u3002\u51fd\u6570\u53ef\u4ee5\u7528\u4e8e\u5b9e\u73b0\u6570\u636e\u8f6c\u6362\u3001\u903b\u8f91\u5224\u65ad\u3001\u6570\u5b66\u8fd0\u7b97\u7b49\u529f\u80fd\uff0c\u63d0\u9ad8SQL\u8bed\u53e5\u7684\u7075\u6d3b\u6027\u548c\u590d\u7528\u6027\u3002Oracle\u51fd\u6570\u901a\u5e38\u5206\u4e3a\u6807\u91cf\u51fd\u6570\u548c\u8868\u51fd\u6570\u4e24\u79cd\u7c7b\u578b\uff0c\u5177\u4f53\u5982\u4e0b\uff1a<\/p>\n

    \n
  1. \u6807\u91cf\u51fd\u6570\uff1a\u8fd4\u56de\u5355\u4e00\u7684\u503c\uff0c\u53ef\u4ee5\u4f5c\u4e3a\u67e5\u8be2\u8bed\u53e5\u7684\u4e00\u90e8\u5206\u4f7f\u7528\u3002<\/li>\n
  2. \u8868\u51fd\u6570\uff1a\u8fd4\u56de\u4e00\u5f20\u8868\uff0c\u53ef\u4ee5\u5728\u67e5\u8be2\u8bed\u53e5\u4e2d\u50cf\u8868\u4e00\u6837\u4f7f\u7528\u3002<\/li>\n<\/ol>\n

    \u4e8c\u3001\u5982\u4f55\u5b9a\u4e49\u548c\u8c03\u7528Oracle\u51fd\u6570\uff1f<\/p>\n

      \n
    1. \u5b9a\u4e49\u51fd\u6570\uff1a<\/li>\n<\/ol>\n

      \u5728Oracle\u6570\u636e\u5e93\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528CREATE FUNCTION\u8bed\u53e5\u5b9a\u4e49\u51fd\u6570\uff0c\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n

      CREATE OR REPLACE FUNCTION function_name \n(parameter1 type, parameter2 type, ...) \nRETURN return_type \nIS \n-- \u51fd\u6570\u4f53\nBEGIN\n-- \u51fd\u6570\u903b\u8f91\nRETURN result;\nEND;<\/pre>\n
        \n
      1. \u8c03\u7528\u51fd\u6570\uff1a<\/li>\n<\/ol>\n
        \u53ef\u4ee5\u5728SQL\u8bed\u53e5\u4e2d\u4f7f\u7528SELECT\u8bed\u53e5\u8c03\u7528\u51fd\u6570\uff0c\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n
        SELECT function_name(param1, param2) FROM dual;<\/pre>\n
        \u4e09\u3001\u5e38\u7528\u7684Oracle\u51fd\u6570\u793a\u4f8b<\/p>\n
          \n
        1. \u5b57\u7b26\u4e32\u51fd\u6570\uff1a<\/li>\n<\/ol>\n
          -- \u62fc\u63a5\u5b57\u7b26\u4e32\nCREATE OR REPLACE FUNCTION concat_str(str1 VARCHAR2, str2 VARCHAR2) \nRETURN VARCHAR2 \nIS \nBEGIN\nRETURN str1 || str2;\nEND;\n\n-- \u83b7\u53d6\u5b57\u7b26\u4e32\u957f\u5ea6\nCREATE OR REPLACE FUNCTION str_length(str VARCHAR2) \nRETURN NUMBER \nIS \nBEGIN\nRETURN LENGTH(str);\nEND;<\/pre>\n
            \n
          1. \u6570\u5b66\u51fd\u6570\uff1a<\/li>\n<\/ol>\n
            -- \u8ba1\u7b97\u4e24\u6570\u4e4b\u548c\nCREATE OR REPLACE FUNCTION add_num(num1 NUMBER, num2 NUMBER) \nRETURN NUMBER \nIS \nBEGIN\nRETURN num1 + num2;\nEND;\n\n-- \u6c42\u5e73\u65b9\u6839\nCREATE OR REPLACE FUNCTION sqrt_num(num NUMBER) \nRETURN NUMBER \nIS \nBEGIN\nRETURN SQRT(num);\nEND;<\/pre>\n
              \n
            1. \u65e5\u671f\u51fd\u6570\uff1a<\/li>\n<\/ol>\n
              -- \u83b7\u53d6\u5f53\u524d\u65e5\u671f\nCREATE OR REPLACE FUNCTION get_current_date \nRETURN DATE \nIS \nBEGIN\nRETURN SYSDATE;\nEND;\n\n-- \u8ba1\u7b97\u65e5\u671f\u5dee\nCREATE OR REPLACE FUNCTION date_diff(date1 DATE, date2 DATE) \nRETURN NUMBER \nIS \nBEGIN\nRETURN date1 - date2;\nEND;<\/pre>\n
              \u4ee5\u4e0a\u662f\u4e00\u4e9b\u5e38\u7528\u7684Oracle\u51fd\u6570\u793a\u4f8b\uff0c\u901a\u8fc7\u5b66\u4e60\u548c\u5b9e\u8df5\uff0c\u8bfb\u8005\u53ef\u4ee5\u8fdb\u4e00\u6b65\u638c\u63e1Oracle\u51fd\u6570\u7684\u4f7f\u7528\u6280\u5de7\uff0c\u63d0\u5347\u5728\u6570\u636e\u5e93\u7ba1\u7406\u548c\u5f00\u53d1\u65b9\u9762\u7684\u80fd\u529b\u3002\u5e0c\u671b\u672c\u6587\u5bf9\u8bfb\u8005\u6709\u6240\u5e2e\u52a9\uff0c\u8c22\u8c22\u9605\u8bfb\uff01<\/p>\n
              \u4eca\u5929\u5173\u4e8e\u300a\u4ece\u521d\u5b66\u5230\u719f\u7ec3\uff1a\u638c\u63e1Oracle\u51fd\u6570\u7684\u6280\u5de7\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/p>\n
              \n
              \n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
              \u4ece\u521d\u5b66\u5230\u719f\u7ec3\uff1a\u638c\u63e1Oracle\u51fd...<\/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-199791","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199791","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=199791"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199791\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=199791"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=199791"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=199791"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}