{"id":15877,"date":"2023-12-04T23:24:18","date_gmt":"2023-12-04T15:24:18","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=15877"},"modified":"2023-12-04T23:39:36","modified_gmt":"2023-12-04T15:39:36","slug":"oracle-zhong-zen-yang-chuang-jian-yi-ge-yi-ge-suo","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/04\/oracle-zhong-zen-yang-chuang-jian-yi-ge-yi-ge-suo\/","title":{"rendered":"Oracle \u4e2d\u600e\u6837\u521b\u5efa\u4e00\u4e2a\u4e00\u4e2a\u7d22\u5f15\uff0c\u7d22\u5f15\u4f7f\u7528\u7684\u539f\u5219\uff0c\u6709\u4ec0\u4e48\u4f18\u70b9\u548c\u7f3a\u70b9\uff1f"},"content":{"rendered":"

\u5728 Oracle \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 CREATE INDEX<\/code> \u8bed\u53e5\u6765\u521b\u5efa\u7d22\u5f15\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u521b\u5efa\u7d22\u5f15\u7684\u4f8b\u5b50\uff1a<\/p>\n

CREATE INDEX index_name\nON table_name (column1, column2, ...);\n<\/code><\/pre>\n
\u5176\u4e2d\uff0cindex_name<\/code> \u662f\u7d22\u5f15\u7684\u540d\u79f0\uff0ctable_name<\/code> \u662f\u8868\u7684\u540d\u79f0\uff0c\u800c column1, column2, ...<\/code> \u662f\u8981\u521b\u5efa\u7d22\u5f15\u7684\u5217\u3002<\/p>\n
\u7d22\u5f15\u7684\u4f7f\u7528\u539f\u5219\uff1a<\/strong><\/p>\n
    \n
  1. \n\u9009\u62e9\u9002\u5f53\u7684\u5217\uff1a<\/strong><\/p>\n
      \n
    • \u9009\u62e9\u5728\u67e5\u8be2\u4e2d\u7ecf\u5e38\u7528\u4e8e\u68c0\u7d22\u6570\u636e\u7684\u5217\u6765\u521b\u5efa\u7d22\u5f15\uff0c\u7279\u522b\u662f\u5728 WHERE \u5b50\u53e5\u4e2d\u7ecf\u5e38\u4f7f\u7528\u7684\u5217\u3002<\/li>\n<\/ul>\n<\/li>\n
    • \n\u907f\u514d\u8fc7\u591a\u7684\u7d22\u5f15\uff1a<\/strong><\/p>\n
        \n
      • \u4e0d\u8981\u8fc7\u5ea6\u521b\u5efa\u7d22\u5f15\uff0c\u56e0\u4e3a\u6bcf\u4e2a\u7d22\u5f15\u90fd\u4f1a\u5360\u7528\u989d\u5916\u7684\u5b58\u50a8\u7a7a\u95f4\uff0c\u5e76\u5728\u6570\u636e\u4fee\u6539\u65f6\u5f15\u5165\u6027\u80fd\u5f00\u9500\u3002<\/li>\n<\/ul>\n<\/li>\n
      • \n\u8003\u8651\u8054\u5408\u7d22\u5f15\uff1a<\/strong><\/p>\n
          \n
        • \u8054\u5408\u7d22\u5f15\u662f\u5305\u542b\u591a\u4e2a\u5217\u7684\u7d22\u5f15\uff0c\u53ef\u4ee5\u5728\u591a\u4e2a\u5217\u4e0a\u8fdb\u884c\u68c0\u7d22\u3002\u9009\u62e9\u521b\u5efa\u8054\u5408\u7d22\u5f15\u65f6\uff0c\u8003\u8651\u67e5\u8be2\u7684\u9891\u7387\u548c\u5217\u7684\u987a\u5e8f\u3002<\/li>\n<\/ul>\n<\/li>\n
        • \n\u7ef4\u62a4\u7d22\u5f15\u7684\u7edf\u8ba1\u4fe1\u606f\uff1a<\/strong><\/p>\n
            \n
          • \u5b9a\u671f\u66f4\u65b0\u7d22\u5f15\u7684\u7edf\u8ba1\u4fe1\u606f\uff0c\u4ee5\u786e\u4fdd\u4f18\u5316\u5668\u80fd\u591f\u751f\u6210\u6b63\u786e\u7684\u6267\u884c\u8ba1\u5212\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n
            \u7d22\u5f15\u7684\u4f18\u70b9\uff1a<\/strong><\/p>\n
              \n
            1. \n\u63d0\u9ad8\u68c0\u7d22\u901f\u5ea6\uff1a<\/strong><\/p>\n
                \n
              • \u7d22\u5f15\u53ef\u4ee5\u52a0\u901f\u6570\u636e\u68c0\u7d22\u7684\u901f\u5ea6\uff0c\u7279\u522b\u662f\u5728 WHERE \u5b50\u53e5\u4e2d\u5305\u542b\u7d22\u5f15\u5217\u7684\u67e5\u8be2\u3002<\/li>\n<\/ul>\n<\/li>\n
              • \n\u6392\u5e8f\u548c\u5206\u7ec4\u6548\u7387\u63d0\u9ad8\uff1a<\/strong><\/p>\n
                  \n
                • \u5f53\u4f7f\u7528 ORDER BY \u6216 GROUP BY \u8bed\u53e5\u65f6\uff0c\u7d22\u5f15\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\u3002<\/li>\n<\/ul>\n<\/li>\n
                • \n\u52a0\u901f\u8fde\u63a5\u64cd\u4f5c\uff1a<\/strong><\/p>\n
                    \n
                  • \u5728\u8fde\u63a5\u64cd\u4f5c\u4e2d\uff0c\u7d22\u5f15\u53ef\u4ee5\u52a0\u901f\u6570\u636e\u7684\u5339\u914d\u8fc7\u7a0b\u3002<\/li>\n<\/ul>\n<\/li>\n
                  • \n\u552f\u4e00\u6027\u7ea6\u675f\uff1a<\/strong><\/p>\n
                      \n
                    • \u552f\u4e00\u7d22\u5f15\u53ef\u4ee5\u7528\u4e8e\u5f3a\u5236\u8868\u4e2d\u7684\u6570\u636e\u552f\u4e00\u6027\u3002<\/li>\n<\/ul>\n<\/li>\n
                    • \n\u652f\u6301\u5feb\u901f\u7684\u8303\u56f4\u67e5\u8be2\uff1a<\/strong><\/p>\n
                        \n
                      • \u8303\u56f4\u67e5\u8be2\uff08\u4f8b\u5982 BETWEEN\u3001>\u3001<\uff09\u5728\u6709\u7d22\u5f15\u7684\u5217\u4e0a\u6267\u884c\u66f4\u5feb\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n
                        \u7d22\u5f15\u7684\u7f3a\u70b9\uff1a<\/strong><\/p>\n
                          \n
                        1. \n\u5360\u7528\u989d\u5916\u7684\u5b58\u50a8\u7a7a\u95f4\uff1a<\/strong><\/p>\n
                            \n
                          • \u6bcf\u4e2a\u7d22\u5f15\u90fd\u9700\u8981\u989d\u5916\u7684\u5b58\u50a8\u7a7a\u95f4\uff0c\u56e0\u6b64\u8fc7\u591a\u7684\u7d22\u5f15\u4f1a\u5360\u7528\u5927\u91cf\u78c1\u76d8\u7a7a\u95f4\u3002<\/li>\n<\/ul>\n<\/li>\n
                          • \n\u964d\u4f4e\u5199\u64cd\u4f5c\u6027\u80fd\uff1a<\/strong><\/p>\n
                              \n
                            • \u5bf9\u8868\u8fdb\u884c\u63d2\u5165\u3001\u66f4\u65b0\u548c\u5220\u9664\u7b49\u5199\u64cd\u4f5c\u65f6\uff0c\u7d22\u5f15\u4e5f\u9700\u8981\u8fdb\u884c\u7ef4\u62a4\uff0c\u53ef\u80fd\u5bfc\u81f4\u5199\u64cd\u4f5c\u6027\u80fd\u4e0b\u964d\u3002<\/li>\n<\/ul>\n<\/li>\n
                            • \n\u7ef4\u62a4\u6210\u672c\uff1a<\/strong><\/p>\n
                                \n
                              • \u968f\u7740\u6570\u636e\u7684\u4fee\u6539\uff0c\u7d22\u5f15\u9700\u8981\u8fdb\u884c\u7ef4\u62a4\uff0c\u53ef\u80fd\u5bfc\u81f4\u989d\u5916\u7684\u5f00\u9500\u3002<\/li>\n<\/ul>\n<\/li>\n
                              • \n\u8fc7\u5ea6\u7d22\u5f15\u53ef\u80fd\u5bfc\u81f4\u6027\u80fd\u4e0b\u964d\uff1a<\/strong><\/p>\n
                                  \n
                                • \u8fc7\u591a\u7684\u7d22\u5f15\u53ef\u80fd\u5bfc\u81f4\u6027\u80fd\u4e0b\u964d\uff0c\u56e0\u4e3a\u5728\u5199\u64cd\u4f5c\u65f6\u9700\u8981\u7ef4\u62a4\u591a\u4e2a\u7d22\u5f15\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n
                                  \u7efc\u5408\u8003\u8651\u4e1a\u52a1\u9700\u6c42\u548c\u67e5\u8be2\u6a21\u5f0f\uff0c\u5408\u7406\u5730\u9009\u62e9\u548c\u8bbe\u8ba1\u7d22\u5f15\uff0c\u53ef\u4ee5\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\uff0c\u4f46\u4e5f\u9700\u8981\u6ce8\u610f\u907f\u514d\u6ee5\u7528\u7d22\u5f15\u5bfc\u81f4\u7684\u95ee\u9898\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
                                  \u5728 Oracle \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 CREATE INDEX \u8bed\u53e5\u6765\u521b\u5efa\u7d22\u5f15\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u521b\u5efa\u7d22\u5f15\u7684\u4f8b\u5b50\uff1a C […]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[120],"tags":[],"class_list":["post-15877","post","type-post","status-publish","format-standard","hentry","category-oracel"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15877","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=15877"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15877\/revisions"}],"predecessor-version":[{"id":15878,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15877\/revisions\/15878"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=15877"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=15877"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=15877"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}