{"id":5340,"date":"2024-11-14T09:15:09","date_gmt":"2024-11-14T01:15:09","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5340\/"},"modified":"2024-11-14T09:15:09","modified_gmt":"2024-11-14T01:15:09","slug":"oracle%e6%b8%b8%e6%a0%87%e6%80%8e%e4%b9%88%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5340\/","title":{"rendered":"oracle\u6e38\u6807\u600e\u4e48\u4f7f\u7528"},"content":{"rendered":"

\n \u6e38\u6807\u662f\u4e00\u79cd\u6570\u636e\u5e93\u5bf9\u8c61\uff0c\u5141\u8bb8\u9010\u884c\u8bbf\u95ee\u67e5\u8be2\u7ed3\u679c\u96c6\uff0c\u975e\u5e38\u9002\u7528\u4e8e\u5faa\u73af\u5904\u7406\u6570\u636e\u6216\u6309\u5e8f\u83b7\u53d6\u8bb0\u5f55\u3002oracle \u6e38\u6807\u7684\u4f7f\u7528\u6b65\u9aa4\u5305\u62ec\uff1a\u58f0\u660e\u548c\u6253\u5f00\u6e38\u6807\u83b7\u53d6\u6e38\u6807\u4e2d\u7684\u8bb0\u5f55\u5904\u7406\u6e38\u6807\u4e2d\u7684\u8bb0\u5f55\u5173\u95ed\u6e38\u6807\n<\/p><\/blockquote>\n

\"oracle\u6e38\u6807\u600e\u4e48\u4f7f\u7528\u63d2\u56fe\"<\/p>\n

Oracle \u6e38\u6807\u7684\u4f7f\u7528<\/strong><\/p>\n

\u6e38\u6807\u662f\u4e00\u79cd\u6570\u636e\u5e93\u5bf9\u8c61\uff0c\u5141\u8bb8\u60a8\u9010\u884c\u8bbf\u95ee\u67e5\u8be2\u7ed3\u679c\u96c6\u3002\u5b83\u5728\u9700\u8981\u5faa\u73af\u5904\u7406\u6570\u636e\u6216\u6309\u987a\u5e8f\u83b7\u53d6\u8bb0\u5f55\u65f6\u975e\u5e38\u6709\u7528\u3002<\/p>\n

\u5982\u4f55\u4f7f\u7528 Oracle \u6e38\u6807<\/strong><\/p>\n

\u521b\u5efa\u548c\u4f7f\u7528 Oracle \u6e38\u6807\u6d89\u53ca\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n

    \n
  1. \u58f0\u660e\u548c\u6253\u5f00\u6e38\u6807\uff1a<\/strong>\u4f7f\u7528 OPEN \u8bed\u53e5\u58f0\u660e\u548c\u6253\u5f00\u6e38\u6807\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a<\/li>\n<\/ol>\n
    OPEN <cursor_name> FOR <query>;<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \n
    1.  \u83b7\u53d6\u6e38\u6807\u4e2d\u7684\u8bb0\u5f55\uff1a<\/strong>\u4f7f\u7528 FETCH \u8bed\u53e5\u83b7\u53d6\u6e38\u6807\u4e2d\u7684\u4e0b\u4e00\u6761\u8bb0\u5f55\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a<\/li>\n<\/ol>\n
      FETCH <cursor_name> INTO <variable_list>;<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
        \n
      1.  \u5904\u7406\u6e38\u6807\u4e2d\u7684\u8bb0\u5f55\uff1a<\/strong>\u4e00\u65e6\u83b7\u53d6\u5230\u4e00\u6761\u8bb0\u5f55\uff0c\u5c31\u53ef\u4ee5\u4f7f\u7528\u53d8\u91cf\u5217\u8868\u4e2d\u7684\u53d8\u91cf\u6765\u8bbf\u95ee\u8be5\u8bb0\u5f55\u4e2d\u7684\u6570\u636e\u3002<\/li>\n
      2.  \u5173\u95ed\u6e38\u6807\uff1a<\/strong>\u4f7f\u7528 CLOSE \u8bed\u53e5\u5173\u95ed\u6e38\u6807\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a<\/li>\n<\/ol>\n
        CLOSE <cursor_name>;<\/pre>\n
         \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
        \u6e38\u6807\u7684\u4f18\u70b9<\/strong><\/p>\n
        \u4f7f\u7528 Oracle \u6e38\u6807\u6709\u4e00\u4e9b\u4f18\u70b9\uff1a<\/p>\n
          \n
        •  \u9010\u884c\u8bbf\u95ee\u6570\u636e\uff1a<\/strong>\u6e38\u6807\u5141\u8bb8\u60a8\u4e00\u6b21\u8bbf\u95ee\u67e5\u8be2\u7ed3\u679c\u96c6\u4e2d\u7684\u5355\u4e2a\u8bb0\u5f55\uff0c\u8fd9\u5bf9\u4e8e\u5faa\u73af\u5904\u7406\u6570\u636e\u6216\u6309\u987a\u5e8f\u83b7\u53d6\u8bb0\u5f55\u975e\u5e38\u6709\u7528\u3002<\/li>\n
        •  \u63d0\u9ad8\u6027\u80fd\uff1a<\/strong>\u6e38\u6807\u53ef\u4ee5\u63d0\u9ad8\u67d0\u4e9b\u64cd\u4f5c\u7684\u6027\u80fd\uff0c\u4f8b\u5982\u9700\u8981\u53cd\u590d\u83b7\u53d6\u76f8\u540c\u6570\u636e\u7684\u5faa\u73af\u3002<\/li>\n
        •  \u63a7\u5236\uff1a<\/strong>\u6e38\u6807\u5141\u8bb8\u60a8\u63a7\u5236\u6570\u636e\u8bbf\u95ee\u65b9\u5f0f\uff0c\u4f8b\u5982\u4ec5\u83b7\u53d6\u67e5\u8be2\u7ed3\u679c\u96c6\u7684\u4e00\u90e8\u5206\u6216\u6309\u7279\u5b9a\u6761\u4ef6\u8fc7\u6ee4\u8bb0\u5f55\u3002<\/li>\n<\/ul>\n
          \u6e38\u6807\u7684\u793a\u4f8b<\/strong><\/p>\n
          \u4ee5\u4e0b\u662f\u4f7f\u7528 Oracle \u6e38\u6807\u7684\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n
          -- \u58f0\u660e\u6e38\u6807\nDECLARE cursor1 CURSOR FOR SELECT * FROM employees;\n\n-- \u6253\u5f00\u6e38\u6807\nOPEN cursor1;\n\n-- \u83b7\u53d6\u6e38\u6807\u4e2d\u7684\u8bb0\u5f55\nFETCH cursor1 INTO emp_id, emp_name;\n\n-- \u5faa\u73af\u5904\u7406\u6e38\u6807\u4e2d\u7684\u8bb0\u5f55\nWHILE cursor1%FOUND LOOP\n    -- \u4f7f\u7528 emp_id \u548c emp_name \u53d8\u91cf\u5904\u7406\u8bb0\u5f55\nEND LOOP;\n\n-- \u5173\u95ed\u6e38\u6807\nCLOSE cursor1;<\/pre>\n
           \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
          \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6e38\u6807 cursor1 \u88ab\u7528\u4e8e\u9010\u884c\u83b7\u53d6 employees \u8868\u4e2d\u7684\u8bb0\u5f55\u3002<\/p>\n
          \u4ee5\u4e0a\u5c31\u662f\u6e38\u6807\u600e\u4e48\u4f7f\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":"
          \u6e38\u6807\u662f\u4e00\u79cd\u6570\u636e\u5e93\u5bf9\u8c61\uff0c\u5141\u8bb8\u9010\u884c\u8bbf\u95ee\u67e5\u8be2\u7ed3\u679c\u96c6\uff0c\u975e\u5e38\u9002\u7528\u4e8e\u5faa\u73af\u5904\u7406\u6570\u636e\u6216\u6309\u5e8f\u83b7\u53d6\u8bb0\u5f55\u3002oracle \u6e38\u6807\u7684\u4f7f\u7528\u6b65\u9aa4\u5305\u62ec\uff1a\u58f0\u660e\u548c\u6253\u5f00\u6e38\u6807\u83b7\u53d6\u6e38\u6807\u4e2d\u7684\u8bb0\u5f55\u5904\u7406\u6e38\u6807\u4e2d\u7684\u8bb0\u5f55\u5173\u95ed\u6e38\u6807 Oracle \u6e38\u6807\u7684\u4f7f\u7528 \u6e38\u6807\u662f\u4e00\u79cd\u6570\u636e\u5e93\u5bf9\u8c61\uff0c\u5141\u8bb8\u60a8\u9010\u884c\u8bbf\u95ee\u67e5\u8be2\u7ed3\u679c\u96c6\u3002\u5b83\u5728\u9700\u8981\u5faa\u73af\u5904\u7406\u6570\u636e\u6216\u6309\u987a\u5e8f\u83b7\u53d6\u8bb0\u5f55\u65f6\u975e\u5e38\u6709\u7528\u3002 \u5982\u4f55\u4f7f\u7528 Oracle \u6e38\u6807 \u521b\u5efa\u548c\u4f7f\u7528 Oracle \u6e38\u6807\u6d89\u53ca\u4ee5\u4e0b\u6b65\u9aa4\uff1a \u58f0\u660e\u548c\u6253\u5f00\u6e38\u6807\uff1a\u4f7f\u7528 OPEN \u8bed\u53e5\u58f0\u660e\u548c\u6253\u5f00\u6e38\u6807\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a OPEN <cursor_name> FOR <query>; \u767b\u5f55\u540e\u590d\u5236 \u83b7\u53d6\u6e38\u6807\u4e2d\u7684\u8bb0\u5f55\uff1a\u4f7f\u7528 FETCH \u8bed\u53e5\u83b7\u53d6\u6e38\u6807\u4e2d\u7684\u4e0b\u4e00\u6761\u8bb0\u5f55\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a FETCH <cursor_name> INTO <variable_list>; \u767b\u5f55\u540e\u590d\u5236 \u5904\u7406\u6e38\u6807\u4e2d\u7684\u8bb0\u5f55\uff1a\u4e00\u65e6\u83b7\u53d6\u5230\u4e00\u6761\u8bb0\u5f55\uff0c\u5c31\u53ef\u4ee5\u4f7f\u7528\u53d8\u91cf\u5217\u8868\u4e2d\u7684\u53d8\u91cf\u6765\u8bbf\u95ee\u8be5\u8bb0\u5f55\u4e2d\u7684\u6570\u636e\u3002 \u5173\u95ed\u6e38\u6807\uff1a\u4f7f\u7528 CLOSE \u8bed\u53e5\u5173\u95ed\u6e38\u6807\u3002\u8bed\u6cd5\u5982\u4e0b\uff1a CLOSE <cursor_name>; \u767b\u5f55\u540e\u590d\u5236 \u6e38\u6807\u7684\u4f18\u70b9 \u4f7f\u7528 Oracle \u6e38\u6807\u6709\u4e00\u4e9b\u4f18\u70b9\uff1a \u9010\u884c\u8bbf\u95ee\u6570\u636e\uff1a\u6e38\u6807\u5141\u8bb8\u60a8\u4e00\u6b21\u8bbf\u95ee\u67e5\u8be2\u7ed3\u679c\u96c6\u4e2d\u7684\u5355\u4e2a\u8bb0\u5f55\uff0c\u8fd9\u5bf9\u4e8e\u5faa\u73af\u5904\u7406\u6570\u636e\u6216\u6309\u987a\u5e8f\u83b7\u53d6\u8bb0\u5f55\u975e\u5e38\u6709\u7528\u3002 \u63d0\u9ad8\u6027\u80fd\uff1a\u6e38\u6807\u53ef\u4ee5\u63d0\u9ad8\u67d0\u4e9b\u64cd\u4f5c\u7684\u6027\u80fd\uff0c\u4f8b\u5982\u9700\u8981\u53cd\u590d\u83b7\u53d6\u76f8\u540c\u6570\u636e\u7684\u5faa\u73af\u3002 \u63a7\u5236\uff1a\u6e38\u6807\u5141\u8bb8\u60a8\u63a7\u5236\u6570\u636e\u8bbf\u95ee\u65b9\u5f0f\uff0c\u4f8b\u5982\u4ec5\u83b7\u53d6\u67e5\u8be2\u7ed3\u679c\u96c6\u7684\u4e00\u90e8\u5206\u6216\u6309\u7279\u5b9a\u6761\u4ef6\u8fc7\u6ee4\u8bb0\u5f55\u3002 \u6e38\u6807\u7684\u793a\u4f8b \u4ee5\u4e0b\u662f\u4f7f\u7528 Oracle \u6e38\u6807\u7684\u4e00\u4e2a\u793a\u4f8b\uff1a — \u58f0\u660e\u6e38\u6807 DECLARE cursor1 CURSOR FOR SELECT * FROM employees; […]<\/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-5340","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5340","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=5340"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5340\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5340"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5340"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5340"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}