{"id":15567,"date":"2023-12-04T20:54:32","date_gmt":"2023-12-04T12:54:32","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=15567"},"modified":"2023-12-04T20:56:31","modified_gmt":"2023-12-04T12:56:31","slug":"oracle-zhong-zen-yang-chuang-jian-yi-ge-suo-yin-su","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/04\/oracle-zhong-zen-yang-chuang-jian-yi-ge-suo-yin-su\/","title":{"rendered":"Oracle \u4e2d\u600e\u6837\u521b\u5efa\u4e00\u4e2a\u7d22\u5f15\uff0c\u7d22\u5f15\u4f7f\u7528\u7684\u539f\u5219\uff0c\u6709\u4ec0\u4e48\u4f18\u7f3a\u70b9\uff1f"},"content":{"rendered":"

\u8981\u5728 Oracle \u4e2d\u521b\u5efa\u4e00\u4e2a\u7d22\u5f15\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a<\/p>\n

CREATE INDEX index_name\nON table_name (column1, column2, ...);\n<\/code><\/pre>\n
\u8fd9\u5c06\u5728\u6307\u5b9a\u7684\u8868\u4e0a\u521b\u5efa\u4e00\u4e2a\u7d22\u5f15\uff0c\u8be5\u7d22\u5f15\u57fa\u4e8e\u6307\u5b9a\u7684\u5217\uff08column1\u3001column2 \u7b49\uff09\u3002<\/p>\n
\u7d22\u5f15\u4f7f\u7528\u7684\u539f\u5219\u5305\u62ec\uff1a<\/p>\n
    \n
  1. \u9009\u62e9\u5408\u9002\u7684\u5217<\/strong>\uff1a\u9009\u62e9\u7ecf\u5e38\u7528\u4e8e\u67e5\u8be2\u548c\u8fde\u63a5\u7684\u5217\u6765\u521b\u5efa\u7d22\u5f15\uff0c\u4f8b\u5982\u7ecf\u5e38\u7528\u4e8e WHERE \u5b50\u53e5\u3001JOIN \u5b50\u53e5\u6216 ORDER BY \u5b50\u53e5\u7684\u5217\u3002<\/p>\n<\/li>\n
  2. \n
    \u8003\u8651\u5217\u7684\u9009\u62e9\u6027<\/strong>\uff1a\u9009\u62e9\u6027\u9ad8\u7684\u5217\uff08\u5373\u53d6\u503c\u591a\u6837\u6027\u4f4e\u7684\u5217\uff09\u66f4\u9002\u5408\u521b\u5efa\u7d22\u5f15\uff0c\u56e0\u4e3a\u5b83\u4eec\u80fd\u66f4\u597d\u5730\u7b5b\u9009\u51fa\u6570\u636e\u3002<\/p>\n<\/li>\n
  3. \n
    \u6ce8\u610f\u67e5\u8be2\u6027\u80fd<\/strong>\uff1a\u7d22\u5f15\u4f1a\u52a0\u5feb\u67e5\u8be2\u901f\u5ea6\uff0c\u4f46\u540c\u65f6\u4e5f\u4f1a\u589e\u52a0\u5199\u5165\u64cd\u4f5c\u7684\u8d1f\u62c5\u3002\u56e0\u6b64\uff0c\u8981\u6839\u636e\u8bfb\u53d6\u548c\u5199\u5165\u7684\u6bd4\u4f8b\u8fdb\u884c\u6743\u8861\u3002<\/p>\n<\/li>\n
  4. \n
    \u5b9a\u671f\u7ef4\u62a4<\/strong>\uff1a\u7d22\u5f15\u9700\u8981\u5b9a\u671f\u7ef4\u62a4\uff0c\u5305\u62ec\u66f4\u65b0\u7d22\u5f15\u7edf\u8ba1\u4fe1\u606f\uff0c\u4ee5\u786e\u4fdd\u4f18\u5316\u5668\u80fd\u591f\u9009\u62e9\u6700\u4f73\u6267\u884c\u8ba1\u5212\u3002<\/p>\n<\/li>\n<\/ol>\n
    \u7d22\u5f15\u7684\u4f18\u70b9\u5305\u62ec\uff1a<\/p>\n
      \n
    • \u63d0\u9ad8\u67e5\u8be2\u6027\u80fd<\/strong>\uff1a\u52a0\u5feb\u6570\u636e\u68c0\u7d22\u901f\u5ea6\uff0c\u7279\u522b\u662f\u5bf9\u5927\u578b\u8868\u8fdb\u884c\u67e5\u8be2\u65f6\uff0c\u53ef\u4ee5\u663e\u8457\u51cf\u5c11\u641c\u7d22\u65f6\u95f4\u3002<\/li>\n
    • \u52a0\u901f\u6392\u5e8f\u548c\u8fde\u63a5\u64cd\u4f5c<\/strong>\uff1a\u5bf9\u4e8e\u5305\u542b ORDER BY \u548c JOIN \u64cd\u4f5c\u7684\u67e5\u8be2\uff0c\u7d22\u5f15\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u6027\u80fd\u3002<\/li>\n
    • \u63d0\u9ad8\u6570\u636e\u7684\u552f\u4e00\u6027\u548c\u5b8c\u6574\u6027<\/strong>\uff1a\u552f\u4e00\u7d22\u5f15\u786e\u4fdd\u4e86\u5217\u503c\u7684\u552f\u4e00\u6027\uff0c\u800c\u4e3b\u952e\u7d22\u5f15\u4fdd\u8bc1\u4e86\u8868\u7684\u5b8c\u6574\u6027\u3002<\/li>\n<\/ul>\n
      \u7f3a\u70b9\u5305\u62ec\uff1a<\/p>\n
        \n
      • \u5360\u7528\u989d\u5916\u5b58\u50a8\u7a7a\u95f4<\/strong>\uff1a\u7d22\u5f15\u5360\u7528\u989d\u5916\u7684\u5b58\u50a8\u7a7a\u95f4\uff0c\u5bf9\u4e8e\u5927\u578b\u8868\u53ef\u80fd\u4f1a\u589e\u52a0\u5b58\u50a8\u6210\u672c\u3002<\/li>\n
      • \u589e\u52a0\u5199\u5165\u64cd\u4f5c\u7684\u5f00\u9500<\/strong>\uff1a\u6bcf\u6b21\u5bf9\u7d22\u5f15\u5217\u8fdb\u884c\u63d2\u5165\u3001\u66f4\u65b0\u6216\u5220\u9664\u64cd\u4f5c\u90fd\u4f1a\u589e\u52a0\u5f00\u9500\uff0c\u53ef\u80fd\u964d\u4f4e\u5199\u5165\u6027\u80fd\u3002<\/li>\n
      • \u9700\u8981\u7ef4\u62a4<\/strong>\uff1a\u7d22\u5f15\u9700\u8981\u5b9a\u671f\u7ef4\u62a4\u4ee5\u4fdd\u6301\u5176\u6548\u7387\uff0c\u7ef4\u62a4\u53ef\u80fd\u9700\u8981\u8017\u8d39\u65f6\u95f4\u548c\u8d44\u6e90\u3002<\/li>\n<\/ul>\n
        \u56e0\u6b64\uff0c\u5408\u7406\u7684\u7d22\u5f15\u8bbe\u8ba1\u548c\u4f7f\u7528\u662f\u63d0\u9ad8\u6570\u636e\u5e93\u6027\u80fd\u7684\u91cd\u8981\u56e0\u7d20\u3002\u6839\u636e\u5b9e\u9645\u4e1a\u52a1\u9700\u6c42\u548c\u67e5\u8be2\u6a21\u5f0f\uff0c\u9009\u62e9\u9002\u5f53\u7684\u5217\u6765\u521b\u5efa\u7d22\u5f15\uff0c\u5b9a\u671f\u7ef4\u62a4\u7d22\u5f15\uff0c\u4ee5\u5e73\u8861\u67e5\u8be2\u6027\u80fd\u548c\u5199\u5165\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
        \u8981\u5728 Oracle \u4e2d\u521b\u5efa\u4e00\u4e2a\u7d22\u5f15\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\uff1a CREATE INDEX index_name ON […]<\/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-15567","post","type-post","status-publish","format-standard","hentry","category-oracel"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15567","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=15567"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15567\/revisions"}],"predecessor-version":[{"id":15568,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/15567\/revisions\/15568"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=15567"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=15567"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=15567"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}