{"id":199889,"date":"2025-05-06T09:51:07","date_gmt":"2025-05-06T01:51:07","guid":{"rendered":"https:\/\/server.hk\/cnblog\/199889\/"},"modified":"2025-05-06T09:51:07","modified_gmt":"2025-05-06T01:51:07","slug":"%e6%a3%80%e6%b5%8b%e5%92%8c%e4%bc%98%e5%8c%96oracle%e6%95%b0%e6%8d%ae%e5%ba%93%e4%b8%ad%e7%9a%84%e9%87%8d%e5%a4%8d%e7%b4%a2%e5%bc%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/199889\/","title":{"rendered":"\u68c0\u6d4b\u548c\u4f18\u5316Oracle\u6570\u636e\u5e93\u4e2d\u7684\u91cd\u590d\u7d22\u5f15"},"content":{"rendered":"

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

\u68c0\u6d4b\u548c\u4f18\u5316Oracle\u6570\u636e\u5e93\u4e2d\u7684\u91cd\u590d\u7d22\u5f15<\/h1>\n

\u76ee\u524d\u4e3b\u673a\u5b9d\u8d1d\u4e0a\u5df2\u7ecf\u6709\u5f88\u591a\u5173\u4e8e\u7684\u6587\u7ae0\u4e86\uff0c\u81ea\u5df1\u5728\u521d\u6b21\u9605\u8bfb\u8fd9\u4e9b\u6587\u7ae0\u4e2d\uff0c\u4e5f\u89c1\u8bc6\u5230\u4e86\u5f88\u591a\u5b66\u4e60\u601d\u8def\uff1b\u90a3\u4e48\u672c\u6587\uff0c\u4e5f\u5e0c\u671b\u80fd\u5e2e\u52a9\u5230\u5927\u5bb6\uff0c\u5982\u679c\u9605\u8bfb\u5b8c\u540e\u771f\u7684\u5bf9\u4f60\u5b66\u4e60\u6709\u5e2e\u52a9\uff0c\u6b22\u8fce\u52a8\u52a8\u624b\u6307\uff0c\u8bc4\u8bba\u7559\u8a00\u5e76\u5206\u4eab~<\/p>\n

\u5728Oracle\u6570\u636e\u5e93\u4e2d\uff0c\u91cd\u590d\u7d22\u5f15\u662f\u6307\u5728\u540c\u4e00\u5f20\u8868\u4e2d\u5b58\u5728\u591a\u4e2a\u7d22\u5f15\uff0c\u8fd9\u4e9b\u7d22\u5f15\u53ef\u80fd\u4f1a\u589e\u52a0\u6570\u636e\u5e93\u7684\u5b58\u50a8\u6210\u672c\u3001\u964d\u4f4e\u6027\u80fd\uff0c\u5e76\u5bfc\u81f4\u7ef4\u62a4\u56f0\u96be\u3002\u56e0\u6b64\uff0c\u68c0\u6d4b\u548c\u4f18\u5316\u91cd\u590d\u7d22\u5f15\u662f\u6570\u636e\u5e93\u4f18\u5316\u7684\u4e00\u4e2a\u91cd\u8981\u65b9\u9762\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u5728Oracle\u6570\u636e\u5e93\u4e2d\u68c0\u6d4b\u548c\u4f18\u5316\u91cd\u590d\u7d22\u5f15\uff0c\u5e76\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u4ee5\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u7406\u89e3\u3002<\/p>\n

1. \u68c0\u6d4b\u91cd\u590d\u7d22\u5f15<\/h2>\n

1.1 \u67e5\u8be2\u91cd\u590d\u7d22\u5f15<\/h3>\n

\u5728Oracle\u6570\u636e\u5e93\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u67e5\u8be2dba_ind_columns<\/code>\u8868\u6765\u68c0\u6d4b\u662f\u5426\u5b58\u5728\u91cd\u590d\u7d22\u5f15\u3002\u4ee5\u4e0bSQL\u8bed\u53e5\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u5217\u51fa\u91cd\u590d\u7684\u7d22\u5f15\uff1a<\/p>\n

SELECT table_name, index_name, column_name, column_position\nFROM dba_ind_columns\nWHERE table_name = 'YOUR_TABLE_NAME'\nGROUP BY table_name, index_name, column_name, column_position\nHAVING COUNT(*) > 1;<\/pre>\n
\u5728\u4e0a\u9762\u7684SQL\u8bed\u53e5\u4e2d\uff0c\u53ef\u4ee5\u5c06 YOUR_TABLE_NAME<\/code> \u66ff\u6362\u4e3a\u5177\u4f53\u7684\u8868\u540d\uff0c\u67e5\u8be2\u7ed3\u679c\u5c06\u4f1a\u5217\u51fa\u8be5\u8868\u4e2d\u5b58\u5728\u7684\u91cd\u590d\u7d22\u5f15\u3002<\/p>\n
1.2 \u901a\u8fc7DBMS_METADATA\u63d0\u53d6\u7d22\u5f15\u4fe1\u606f<\/h3>\n
\u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u901a\u8fc7\u4f7f\u7528DBMS_METADATA<\/code>\u5305\u63d0\u53d6\u7d22\u5f15\u7684\u5143\u6570\u636e\u4fe1\u606f\uff0c\u7136\u540e\u901a\u8fc7\u6bd4\u8f83\u4e0d\u540c\u7d22\u5f15\u7684\u5143\u6570\u636e\u6765\u68c0\u6d4b\u91cd\u590d\u7d22\u5f15\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8bSQL\u8bed\u53e5\uff1a<\/p>\n
SELECT dbms_metadata.get_ddl('INDEX', index_name) AS index_ddl\nFROM dba_indexes\nWHERE table_name = 'YOUR_TABLE_NAME';<\/pre>\n
\u901a\u8fc7\u4e0a\u8ff0SQL\u8bed\u53e5\uff0c\u53ef\u4ee5\u5c06 YOUR_TABLE_NAME<\/code> \u66ff\u6362\u4e3a\u5177\u4f53\u7684\u8868\u540d\uff0c\u901a\u8fc7\u6bd4\u8f83\u4e0d\u540c\u7d22\u5f15\u7684index_ddl<\/code>\u5b57\u6bb5\u6765\u68c0\u6d4b\u91cd\u590d\u7d22\u5f15\u3002<\/p>\n
2. \u4f18\u5316\u91cd\u590d\u7d22\u5f15<\/h2>\n
2.1 \u5220\u9664\u91cd\u590d\u7d22\u5f15<\/h3>\n
\u4e00\u65e6\u68c0\u6d4b\u5230\u91cd\u590d\u7d22\u5f15\uff0c\u6700\u7b80\u5355\u7684\u4f18\u5316\u65b9\u6cd5\u662f\u5220\u9664\u5176\u4e2d\u4e00\u4e2a\u6216\u591a\u4e2a\u91cd\u590d\u7684\u7d22\u5f15\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8bed\u53e5\u5220\u9664\u5177\u4f53\u7684\u7d22\u5f15\uff1a<\/p>\n
DROP INDEX index_name;<\/pre>\n
\u5176\u4e2d index_name<\/code> \u4e3a\u9700\u8981\u5220\u9664\u7684\u7d22\u5f15\u540d\u3002<\/p>\n
2.2 \u91cd\u5efa\u7d22\u5f15<\/h3>\n
\u53e6\u4e00\u79cd\u4f18\u5316\u65b9\u6cd5\u662f\u91cd\u5efa\u7d22\u5f15\uff0c\u5c06\u591a\u4e2a\u91cd\u590d\u7d22\u5f15\u5408\u5e76\u4e3a\u4e00\u4e2a\u66f4\u9ad8\u6548\u7684\u7d22\u5f15\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8bed\u53e5\u6765\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u7d22\u5f15\uff1a<\/p>\n
CREATE INDEX new_index_name\nON table_name (column1, column2, ...);<\/pre>\n
\u5728\u4e0a\u8ff0SQL\u8bed\u53e5\u4e2d\uff0cnew_index_name<\/code> \u4e3a\u65b0\u7d22\u5f15\u7684\u540d\u79f0\uff0ctable_name<\/code> \u4e3a\u8868\u540d\uff0ccolumn1, column2...<\/code> \u4e3a\u9700\u8981\u5305\u542b\u5728\u7d22\u5f15\u4e2d\u7684\u5217\u540d\u3002<\/p>\n
3. \u603b\u7ed3<\/h2>\n
\u901a\u8fc7\u4e0a\u8ff0\u65b9\u6cd5\uff0c\u6211\u4eec\u53ef\u4ee5\u5728Oracle\u6570\u636e\u5e93\u4e2d\u68c0\u6d4b\u548c\u4f18\u5316\u91cd\u590d\u7d22\u5f15\uff0c\u4ece\u800c\u63d0\u9ad8\u6570\u636e\u5e93\u7684\u6027\u80fd\u548c\u51cf\u5c11\u5b58\u50a8\u6210\u672c\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u53ef\u4ee5\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u9009\u62e9\u5408\u9002\u7684\u4f18\u5316\u65b9\u6cd5\uff0c\u4ece\u800c\u8fbe\u5230\u66f4\u597d\u7684\u6570\u636e\u5e93\u6027\u80fd\u3002<\/p>\n
\u672c\u6587\u4ec5\u63d0\u4f9b\u4e86\u57fa\u672c\u7684\u68c0\u6d4b\u548c\u4f18\u5316\u65b9\u6cd5\uff0c\u8bfb\u8005\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u548c\u60c5\u51b5\u8fdb\u884c\u8fdb\u4e00\u6b65\u7684\u4f18\u5316\u548c\u8c03\u6574\u3002\u5e0c\u671b\u672c\u6587\u5bf9\u8bfb\u8005\u5728Oracle\u6570\u636e\u5e93\u4e2d\u68c0\u6d4b\u548c\u4f18\u5316\u91cd\u590d\u7d22\u5f15\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n
\u4ee5\u4e0a\u5c31\u662f\u300a\u68c0\u6d4b\u548c\u4f18\u5316Oracle\u6570\u636e\u5e93\u4e2d\u7684\u91cd\u590d\u7d22\u5f15\u300b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u5173\u4e8e\u6027\u80fd,\u5206\u6790\u7684\u8d44\u6599\u8bf7\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff01<\/p>\n
\n
\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
\u68c0\u6d4b\u548c\u4f18\u5316Oracle\u6570\u636e\u5e93\u4e2d\u7684...<\/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-199889","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199889","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=199889"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199889\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=199889"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=199889"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=199889"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}