{"id":199830,"date":"2025-05-06T10:50:36","date_gmt":"2025-05-06T02:50:36","guid":{"rendered":"https:\/\/server.hk\/cnblog\/199830\/"},"modified":"2025-05-06T10:50:36","modified_gmt":"2025-05-06T02:50:36","slug":"%e9%81%bf%e5%85%8d%e5%9c%a8oracle%e6%95%b0%e6%8d%ae%e5%ba%93%e4%b8%ad%e5%88%9b%e5%bb%ba%e9%87%8d%e5%a4%8d%e7%9a%84%e7%b4%a2%e5%bc%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/199830\/","title":{"rendered":"\u907f\u514d\u5728Oracle\u6570\u636e\u5e93\u4e2d\u521b\u5efa\u91cd\u590d\u7684\u7d22\u5f15"},"content":{"rendered":"

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

\u907f\u514d\u5728Oracle\u6570\u636e\u5e93\u4e2d\u521b\u5efa\u91cd\u590d\u7684\u7d22\u5f15<\/h1>\n

\u5927\u5bb6\u597d\uff0c\u6211\u4eec\u53c8\u89c1\u9762\u4e86\u554a~\u672c\u6587\u7684\u5185\u5bb9\u4e2d\u5c06\u4f1a\u6d89\u53ca\u5230\u7b49\u7b49\u3002\u5982\u679c\u4f60\u6b63\u5728\u5b66\u4e60\u76f8\u5173\u77e5\u8bc6\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\uff0c\u4ee5\u540e\u4f1a\u7ed9\u5927\u5bb6\u5e26\u6765\u66f4\u591a\u76f8\u5173\u6587\u7ae0\uff0c\u5e0c\u671b\u6211\u4eec\u80fd\u4e00\u8d77\u8fdb\u6b65\uff01\u4e0b\u9762\u5c31\u5f00\u59cb\u672c\u6587\u7684\u6b63\u5f0f\u5185\u5bb9~<\/p>\n

\u6807\u9898\uff1a\u5982\u4f55\u907f\u514dOracle\u6570\u636e\u5e93\u4e2d\u7684\u91cd\u590d\u7d22\u5f15\uff0c\u9700\u8981\u5177\u4f53\u4ee3\u7801\u793a\u4f8b<\/p>\n

\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u7d22\u5f15\u662f\u4e00\u79cd\u975e\u5e38\u91cd\u8981\u7684\u6570\u636e\u7ed3\u6784\uff0c\u7528\u6765\u52a0\u5feb\u6570\u636e\u5e93\u7684\u67e5\u8be2\u901f\u5ea6\u3002\u7136\u800c\uff0c\u6709\u65f6\u5019\u5728\u8bbe\u8ba1\u6570\u636e\u5e93\u65f6\u4f1a\u51fa\u73b0\u91cd\u590d\u521b\u5efa\u7d22\u5f15\u7684\u60c5\u51b5\uff0c\u8fd9\u4f1a\u5bfc\u81f4\u6570\u636e\u5e93\u6027\u80fd\u4e0b\u964d\uff0c\u5360\u7528\u989d\u5916\u7684\u5b58\u50a8\u7a7a\u95f4\uff0c\u751a\u81f3\u5f71\u54cd\u6570\u636e\u5e93\u7684\u7ef4\u62a4\u548c\u66f4\u65b0\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u907f\u514dOracle\u6570\u636e\u5e93\u4e2d\u7684\u91cd\u590d\u7d22\u5f15\uff0c\u5e76\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u6765\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u7406\u89e3\u3002<\/p>\n

\u4e00\u3001\u4ec0\u4e48\u662f\u91cd\u590d\u7d22\u5f15<\/p>\n

\u5728\u6570\u636e\u5e93\u4e2d\uff0c\u91cd\u590d\u7d22\u5f15\u6307\u7684\u662f\u5728\u76f8\u540c\u7684\u5217\u6216\u5217\u7ec4\u4e0a\u521b\u5efa\u4e86\u591a\u4e2a\u76f8\u540c\u7684\u7d22\u5f15\u3002\u8fd9\u6837\u505a\u4f1a\u5bfc\u81f4\u6570\u636e\u5e93\u7cfb\u7edf\u5bf9\u540c\u4e00\u5217\u8fdb\u884c\u591a\u6b21\u7d22\u5f15\uff0c\u4ece\u800c\u589e\u52a0\u4e86\u67e5\u8be2\u548c\u7ef4\u62a4\u7684\u5f00\u9500\uff0c\u540c\u65f6\u4e5f\u589e\u52a0\u4e86\u6570\u636e\u5e93\u7684\u5b58\u50a8\u7a7a\u95f4\u5360\u7528\u3002<\/p>\n

\u4e8c\u3001\u907f\u514d\u91cd\u590d\u7d22\u5f15\u7684\u65b9\u6cd5<\/p>\n

    \n
  1. \u5b9a\u671f\u5ba1\u67e5\u6570\u636e\u5e93\u4e2d\u7684\u7d22\u5f15\uff1a\u5b9a\u671f\u5ba1\u67e5\u6570\u636e\u5e93\u4e2d\u7684\u7d22\u5f15\uff0c\u67e5\u770b\u662f\u5426\u5b58\u5728\u76f8\u540c\u5217\u4e0a\u7684\u91cd\u590d\u7d22\u5f15\u3002Oracle\u63d0\u4f9b\u4e86\u89c6\u56feALL_INDEXES<\/code>\u6765\u67e5\u770b\u6570\u636e\u5e93\u4e2d\u7684\u7d22\u5f15\u4fe1\u606f\uff0c\u53ef\u4ee5\u6839\u636e\u8be5\u89c6\u56fe\u6765\u68c0\u67e5\u662f\u5426\u5b58\u5728\u91cd\u590d\u7d22\u5f15\u3002<\/li>\n
  2. \u521b\u5efa\u7d22\u5f15\u524d\u8fdb\u884c\u67e5\u8be2\u4f18\u5316\uff1a\u5728\u521b\u5efa\u7d22\u5f15\u4e4b\u524d\uff0c\u5efa\u8bae\u8fdb\u884c\u67e5\u8be2\u4f18\u5316\uff0c\u5206\u6790\u67e5\u8be2\u8bed\u53e5\u4e2d\u7684\u6761\u4ef6\uff0c\u786e\u5b9a\u54ea\u4e9b\u5217\u9700\u8981\u521b\u5efa\u7d22\u5f15\u3002\u907f\u514d\u5728\u76f8\u540c\u5217\u4e0a\u591a\u6b21\u521b\u5efa\u7d22\u5f15\u3002<\/li>\n
  3. \u4f7f\u7528\u552f\u4e00\u7d22\u5f15\uff1a\u5982\u679c\u9700\u8981\u5728\u67d0\u4e2a\u5217\u4e0a\u521b\u5efa\u7d22\u5f15\uff0c\u53ef\u4ee5\u8003\u8651\u521b\u5efa\u552f\u4e00\u7d22\u5f15\uff0c\u8fd9\u6837\u53ef\u4ee5\u786e\u4fdd\u5217\u7684\u552f\u4e00\u6027\uff0c\u540c\u65f6\u907f\u514d\u521b\u5efa\u91cd\u590d\u7d22\u5f15\u3002<\/li>\n
  4. \u4f7f\u7528\u8f6f\u4ef6\u5de5\u5177\u8fdb\u884c\u7d22\u5f15\u5206\u6790\uff1a\u6709\u4e9b\u6570\u636e\u5e93\u8bbe\u8ba1\u5de5\u5177\u6216\u6027\u80fd\u4f18\u5316\u5de5\u5177\u53ef\u4ee5\u5e2e\u52a9\u5206\u6790\u6570\u636e\u5e93\u4e2d\u7684\u7d22\u5f15\u60c5\u51b5\uff0c\u5e2e\u52a9\u8bc6\u522b\u548c\u5904\u7406\u91cd\u590d\u7d22\u5f15\u95ee\u9898\u3002<\/li>\n<\/ol>\n

    \u4e09\u3001\u5177\u4f53\u4ee3\u7801\u793a\u4f8b<\/p>\n

    \u4e0b\u9762\u662f\u4e00\u4e2a\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\uff0c\u6f14\u793a\u5982\u4f55\u4f7f\u7528SQL\u8bed\u53e5\u6765\u67e5\u8be2\u6570\u636e\u5e93\u4e2d\u7684\u7d22\u5f15\u4fe1\u606f\uff0c\u5e76\u68c0\u67e5\u662f\u5426\u5b58\u5728\u91cd\u590d\u7d22\u5f15\u3002<\/p>\n

    -- \u67e5\u8be2\u6570\u636e\u5e93\u4e2d\u7684\u7d22\u5f15\u4fe1\u606f\nSELECT\n    table_name,\n    index_name,\n    column_name\nFROM\n    all_ind_columns\nWHERE\n    table_name = 'YOUR_TABLE_NAME';\n\n-- \u68c0\u67e5\u662f\u5426\u5b58\u5728\u91cd\u590d\u7d22\u5f15\nSELECT\n    index_name,\n    COUNT(*)\nFROM\n    all_ind_columns\nWHERE\n    table_name = 'YOUR_TABLE_NAME'\nGROUP BY\n    index_name\nHAVING\n    COUNT(*) > 1;<\/pre>\n
    \u901a\u8fc7\u4ee5\u4e0aSQL\u67e5\u8be2\u53ef\u4ee5\u67e5\u770b\u6307\u5b9a\u8868\u7684\u7d22\u5f15\u4fe1\u606f\uff0c\u5e76\u68c0\u67e5\u662f\u5426\u5b58\u5728\u91cd\u590d\u7d22\u5f15\u3002\u5982\u679c\u5b58\u5728\u91cd\u590d\u7d22\u5f15\uff0c\u53ef\u4ee5\u8003\u8651\u5220\u9664\u5176\u4e2d\u4e00\u4e2a\u7d22\u5f15\uff0c\u4ee5\u907f\u514d\u91cd\u590d\u7d22\u5f15\u9020\u6210\u7684\u6027\u80fd\u548c\u5b58\u50a8\u7a7a\u95f4\u95ee\u9898\u3002<\/p>\n
    \u7efc\u4e0a\u6240\u8ff0\uff0c\u907f\u514d\u6570\u636e\u5e93\u4e2d\u7684\u91cd\u590d\u7d22\u5f15\u662f\u6570\u636e\u5e93\u8bbe\u8ba1\u548c\u6027\u80fd\u4f18\u5316\u4e2d\u7684\u91cd\u8981\u4e00\u73af\u3002\u901a\u8fc7\u5b9a\u671f\u5ba1\u67e5\u3001\u67e5\u8be2\u4f18\u5316\u548c\u4f7f\u7528\u5408\u9002\u7684\u5de5\u5177\uff0c\u6211\u4eec\u53ef\u4ee5\u6709\u6548\u5730\u907f\u514d\u548c\u5904\u7406\u91cd\u590d\u7d22\u5f15\u95ee\u9898\uff0c\u4f18\u5316\u6570\u636e\u5e93\u7684\u6027\u80fd\u548c\u7ef4\u62a4\u6548\u7387\u3002<\/p>\n
    \u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u4e5f\u5c31\u8bb2\u5b8c\u4e86\u300a\u907f\u514d\u5728Oracle\u6570\u636e\u5e93\u4e2d\u521b\u5efa\u91cd\u590d\u7684\u7d22\u5f15\u300b\u7684\u5185\u5bb9\u4e86\u3002\u4e2a\u4eba\u8ba4\u4e3a\uff0c\u57fa\u7840\u77e5\u8bc6\u7684\u5b66\u4e60\u548c\u5de9\u56fa\uff0c\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u5c06\u5176\u8fd0\u7528\u5230\u9879\u76ee\u4e2d\uff0c\u6b22\u8fce\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff0c\u5e26\u4f60\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u91cd\u590d\u7d22\u5f15\u8bc6\u522b,\u5220\u9664\u91cd\u590d\u7d22\u5f15,\u4f18\u5316\u7d22\u5f15\u914d\u7f6e\u7684\u77e5\u8bc6\u70b9\uff01<\/p>\n
    \n
    \n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
    \u907f\u514d\u5728Oracle\u6570\u636e\u5e93\u4e2d\u521b\u5efa\u91cd...<\/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-199830","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199830","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=199830"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199830\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=199830"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=199830"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=199830"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}