{"id":199967,"date":"2025-05-06T08:35:39","date_gmt":"2025-05-06T00:35:39","guid":{"rendered":"https:\/\/server.hk\/cnblog\/199967\/"},"modified":"2025-05-06T08:35:39","modified_gmt":"2025-05-06T00:35:39","slug":"oracle%e7%b4%a2%e5%bc%95%e7%9a%84%e7%b1%bb%e5%9e%8b%e5%92%8c%e4%bc%98%e7%bc%ba%e7%82%b9%e5%88%86%e6%9e%90","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/199967\/","title":{"rendered":"Oracle\u7d22\u5f15\u7684\u7c7b\u578b\u548c\u4f18\u7f3a\u70b9\u5206\u6790"},"content":{"rendered":"

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

Oracle\u7d22\u5f15\u7684\u7c7b\u578b\u548c\u4f18\u7f3a\u70b9\u5206\u6790<\/h1>\n

\u6765\u5230\u4e3b\u673a\u5b9d\u8d1d\u7684\u5927\u5bb6\uff0c\u76f8\u4fe1\u90fd\u662f\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5e0c\u671b\u5728\u8fd9\u91cc\u5b66\u4e60\u6570\u636e\u5e93\u76f8\u5173\u7f16\u7a0b\u77e5\u8bc6\u3002\u4e0b\u9762\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u5e26\u5927\u5bb6\u804a\u804a\u300aOracle\u7d22\u5f15\u7684\u7c7b\u578b\u548c\u4f18\u7f3a\u70b9\u5206\u6790\u300b\uff0c\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n

Oracle\u4e2d\u5e38\u7528\u7684\u7d22\u5f15\u5206\u7c7b\u53ca\u4f18\u7f3a\u70b9\u5206\u6790<\/p>\n

\u5728Oracle\u6570\u636e\u5e93\u4e2d\uff0c\u7d22\u5f15\u662f\u4e00\u79cd\u91cd\u8981\u7684\u6570\u636e\u5e93\u5bf9\u8c61\uff0c\u7528\u4e8e\u63d0\u9ad8\u6570\u636e\u5e93\u68c0\u7d22\u6570\u636e\u7684\u6548\u7387\u3002\u6839\u636e\u5efa\u7acb\u7d22\u5f15\u7684\u65b9\u5f0f\u548c\u7279\u70b9\uff0c\u7d22\u5f15\u53ef\u4ee5\u5206\u4e3a\u591a\u79cd\u7c7b\u522b\uff0c\u6bcf\u79cd\u7d22\u5f15\u90fd\u6709\u5176\u4f18\u70b9\u548c\u7f3a\u70b9\u3002\u672c\u6587\u5c06\u4ecb\u7ecdOracle\u4e2d\u5e38\u7528\u7684\u7d22\u5f15\u5206\u7c7b\uff0c\u5e76\u5bf9\u5b83\u4eec\u7684\u4f18\u7f3a\u70b9\u8fdb\u884c\u5206\u6790\uff0c\u540c\u65f6\u63d0\u4f9b\u76f8\u5e94\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n

\u4e00\u3001\u5355\u5217\u7d22\u5f15<\/p>\n

    \n
  1. B-Tree\u7d22\u5f15<\/li>\n<\/ol>\n

    B-Tree\u7d22\u5f15\u662f\u6700\u5e38\u89c1\u7684\u4e00\u79cd\u7d22\u5f15\u7c7b\u578b\uff0c\u9002\u7528\u4e8e\u7b49\u503c\u67e5\u627e\u548c\u8303\u56f4\u67e5\u627e\u3002\u5b83\u6309\u7167\u4e8c\u53c9\u6811\u7684\u65b9\u5f0f\u7ec4\u7ec7\u6570\u636e\uff0c\u53ef\u4ee5\u52a0\u5feb\u68c0\u7d22\u901f\u5ea6\u3002\u4f46\u662f\u5728\u6570\u636e\u91cf\u8f83\u5927\u65f6\uff0cB-Tree\u7d22\u5f15\u53ef\u80fd\u5bfc\u81f4\u7d22\u5f15\u6df1\u5ea6\u589e\u52a0\uff0c\u5f71\u54cd\u67e5\u8be2\u6548\u7387\u3002<\/p>\n

    CREATE INDEX idx_name ON table_name(column_name);<\/pre>\n
      \n
    1. \u552f\u4e00\u7d22\u5f15<\/li>\n<\/ol>\n
      \u552f\u4e00\u7d22\u5f15\u4e0eB-Tree\u7d22\u5f15\u7c7b\u4f3c\uff0c\u4e0d\u540c\u4e4b\u5904\u5728\u4e8e\u552f\u4e00\u7d22\u5f15\u4fdd\u8bc1\u7d22\u5f15\u5217\u7684\u6570\u503c\u552f\u4e00\u6027\u3002\u552f\u4e00\u7d22\u5f15\u53ef\u4ee5\u6709\u6548\u5730\u907f\u514d\u91cd\u590d\u6570\u636e\u7684\u63d2\u5165\uff0c\u63d0\u9ad8\u6570\u636e\u5b8c\u6574\u6027\uff0c\u4f46\u662f\u5728\u63d2\u5165\u6570\u636e\u65f6\u9700\u8981\u989d\u5916\u7684\u68c0\u67e5\u7ea6\u675f\uff0c\u5bf9\u6027\u80fd\u6709\u4e00\u5b9a\u5f71\u54cd\u3002<\/p>\n
      CREATE UNIQUE INDEX idx_name ON table_name(column_name);<\/pre>\n
        \n
      1. \u805a\u96c6\u7d22\u5f15<\/li>\n<\/ol>\n
        \u805a\u96c6\u7d22\u5f15\u662f\u5c06\u8868\u7684\u7269\u7406\u987a\u5e8f\u4e0e\u7d22\u5f15\u7684\u903b\u8f91\u987a\u5e8f\u4e00\u81f4\u5316\u7684\u7d22\u5f15\u7c7b\u578b\uff0c\u5b83\u5c06\u6570\u636e\u884c\u6309\u7167\u7d22\u5f15\u5217\u7684\u503c\u8fdb\u884c\u6392\u5e8f\u3002\u805a\u96c6\u7d22\u5f15\u53ef\u4ee5\u51cf\u5c11IO\u6b21\u6570\uff0c\u63d0\u9ad8\u67e5\u8be2\u901f\u5ea6\uff0c\u4f46\u662f\u5728\u9891\u7e41\u7684\u63d2\u5165\u548c\u5220\u9664\u64cd\u4f5c\u65f6\u53ef\u80fd\u4f1a\u5f71\u54cd\u6027\u80fd\u3002<\/p>\n
        CREATE CLUSTER index_name ON table_name;<\/pre>\n
        \u4e8c\u3001\u591a\u5217\u7d22\u5f15<\/p>\n
          \n
        1. \u7ec4\u5408\u7d22\u5f15<\/li>\n<\/ol>\n
          \u7ec4\u5408\u7d22\u5f15\u662f\u7531\u591a\u4e2a\u5217\u7ec4\u6210\u7684\u7d22\u5f15\uff0c\u9002\u7528\u4e8e\u8054\u5408\u67e5\u8be2\u6216\u591a\u5217\u6761\u4ef6\u67e5\u8be2\u3002\u7ec4\u5408\u7d22\u5f15\u53ef\u4ee5\u51cf\u5c11\u7d22\u5f15\u7684\u6570\u91cf\uff0c\u8282\u7701\u5b58\u50a8\u7a7a\u95f4\uff0c\u4f46\u8981\u6ce8\u610f\u7d22\u5f15\u5217\u7684\u987a\u5e8f\u5bf9\u67e5\u8be2\u6548\u7387\u7684\u5f71\u54cd\u3002<\/p>\n
          CREATE INDEX idx_name ON table_name(column1, column2);<\/pre>\n
            \n
          1. \u8986\u76d6\u7d22\u5f15<\/li>\n<\/ol>\n
            \u8986\u76d6\u7d22\u5f15\u662f\u6307\u7d22\u5f15\u5305\u542b\u4e86\u6240\u6709\u67e5\u8be2\u9700\u8981\u7684\u5217\uff0c\u53ef\u4ee5\u907f\u514d\u8bbf\u95ee\u6570\u636e\u8868\uff0c\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\u3002\u4f46\u662f\u8981\u6ce8\u610f\u7d22\u5f15\u5217\u7684\u9009\u62e9\uff0c\u4ee5\u514d\u7d22\u5f15\u8fc7\u5927\u5f71\u54cd\u6027\u80fd\u3002<\/p>\n
            CREATE INDEX idx_name ON table_name(column1) INCLUDE (column2, column3);<\/pre>\n
            \u4e09\u3001\u7279\u6b8a\u7d22\u5f15<\/p>\n
              \n
            1. \u5168\u6587\u7d22\u5f15<\/li>\n<\/ol>\n
              \u5168\u6587\u7d22\u5f15\u662f\u4e00\u79cd\u4e13\u95e8\u7528\u4e8e\u68c0\u7d22\u6587\u672c\u6570\u636e\u7684\u7d22\u5f15\u7c7b\u578b\uff0c\u9002\u7528\u4e8e\u5168\u6587\u641c\u7d22\u548c\u6a21\u7cca\u67e5\u8be2\u3002\u5168\u6587\u7d22\u5f15\u53ef\u4ee5\u63d0\u9ad8\u6587\u672c\u6570\u636e\u68c0\u7d22\u6548\u7387\uff0c\u4f46\u5728\u7ef4\u62a4\u7d22\u5f15\u548c\u5360\u7528\u5b58\u50a8\u7a7a\u95f4\u4e0a\u9700\u8981\u66f4\u591a\u7684\u8d44\u6e90\u3002<\/p>\n
              CREATE FULLTEXT INDEX idx_name ON table_name(column_name);<\/pre>\n
                \n
              1. \u6a21\u7cca\u67e5\u8be2\u7d22\u5f15<\/li>\n<\/ol>\n
                \u6a21\u7cca\u67e5\u8be2\u7d22\u5f15\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u7d22\u5f15\u7c7b\u578b\uff0c\u7528\u4e8e\u652f\u6301\u6a21\u7cca\u67e5\u8be2\u64cd\u4f5c\uff0c\u4f8b\u5982LIKE\u64cd\u4f5c\u7b26\u3002\u6a21\u7cca\u67e5\u8be2\u7d22\u5f15\u53ef\u4ee5\u52a0\u5feb\u6a21\u7cca\u67e5\u8be2\u7684\u901f\u5ea6\uff0c\u4f46\u662f\u9700\u8981\u6ce8\u610f\u901a\u914d\u7b26\u7684\u4f7f\u7528\u65b9\u5f0f\u3002<\/p>\n
                CREATE INDEX idx_name ON table_name(column_name) NOPARALLEL;<\/pre>\n
                \u7efc\u4e0a\u6240\u8ff0\uff0cOracle\u4e2d\u5e38\u7528\u7684\u7d22\u5f15\u7c7b\u578b\u6db5\u76d6\u4e86\u5355\u5217\u7d22\u5f15\u3001\u591a\u5217\u7d22\u5f15\u548c\u7279\u6b8a\u7d22\u5f15\uff0c\u6bcf\u79cd\u7d22\u5f15\u7c7b\u578b\u90fd\u6709\u5176\u9002\u7528\u7684\u573a\u666f\u548c\u4f18\u7f3a\u70b9\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6839\u636e\u5177\u4f53\u7684\u4e1a\u52a1\u9700\u6c42\u548c\u67e5\u8be2\u573a\u666f\u9009\u62e9\u5408\u9002\u7684\u7d22\u5f15\u7c7b\u578b\uff0c\u5408\u7406\u8bbe\u8ba1\u7d22\u5f15\u7ed3\u6784\u53ef\u4ee5\u6709\u6548\u63d0\u9ad8\u6570\u636e\u5e93\u7684\u67e5\u8be2\u6027\u80fd\u3002<\/p>\n
                \u7ec8\u4e8e\u4ecb\u7ecd\u5b8c\u5566\uff01\u5c0f\u4f19\u4f34\u4eec\uff0c\u8fd9\u7bc7\u5173\u4e8e\u300aOracle\u7d22\u5f15\u7684\u7c7b\u578b\u548c\u4f18\u7f3a\u70b9\u5206\u6790\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":"
                Oracle\u7d22\u5f15\u7684\u7c7b\u578b\u548c\u4f18\u7f3a\u70b9\u5206...<\/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-199967","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199967","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=199967"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199967\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=199967"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=199967"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=199967"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}