{"id":5169,"date":"2024-11-14T08:03:22","date_gmt":"2024-11-14T00:03:22","guid":{"rendered":"https:\/\/fwq.ai\/blog\/5169\/"},"modified":"2024-11-14T08:03:22","modified_gmt":"2024-11-14T00:03:22","slug":"mysql%e6%80%8e%e4%b9%88%e8%ae%be%e7%bd%ae%e7%b4%a2%e5%bc%95","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/5169\/","title":{"rendered":"mysql\u600e\u4e48\u8bbe\u7f6e\u7d22\u5f15"},"content":{"rendered":"

\n mysql\u7d22\u5f15\u662f\u4e00\u79cd\u52a0\u901f\u67e5\u627e\u548c\u68c0\u7d22\u6570\u636e\u7684\u7ed3\u6784\u3002\u521b\u5efa\u7d22\u5f15\u9700\u8981\u4ee5\u4e0b\u6b65\u9aa4\uff1a\u786e\u5b9a\u8981\u7d22\u5f15\u7684\u5217\uff08\u7528\u4e8e\u67e5\u8be2\u6216\u8fde\u63a5\u7684\u5217\uff09\u3002\u4f7f\u7528create index\u8bed\u6cd5\u521b\u5efa\u7d22\u5f15\u3002\u9009\u62e9\u7d22\u5f15\u7c7b\u578b\uff08b-tree\u6216\u54c8\u5e0c\u7d22\u5f15\uff09\u3002\u6307\u5b9a\u7d22\u5f15\u9009\u9879\uff08\u4f8b\u5982unique\u6216fulltext\uff09\u3002\u7d22\u5f15\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\u3001\u51cf\u5c11\u670d\u52a1\u5668\u8d1f\u8f7d\u3001\u6539\u5584\u8fde\u63a5\u901f\u5ea6\uff0c\u4f46\u5e94\u8c28\u614e\u521b\u5efa\uff0c\u907f\u514d\u8fc7\u91cf\u7d22\u5f15\u964d\u4f4e\u5199\u5165\u6027\u80fd\uff0c\u5e76\u5b9a\u671f\u7ef4\u62a4\u4ee5\u4fdd\u6301\u6700\u65b0\u72b6\u6001\u3002\n<\/p><\/blockquote>\n

\"mysql\u600e\u4e48\u8bbe\u7f6e\u7d22\u5f15\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u8bbe\u7f6e MySQL \u7d22\u5f15<\/strong><\/p>\n

MySQL \u7d22\u5f15\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u5b83\u6709\u52a9\u4e8e\u5feb\u901f\u67e5\u627e\u548c\u68c0\u7d22\u6570\u636e\u3002\u5efa\u7acb\u7d22\u5f15\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\uff0c\u5c24\u5176\u662f\u5f53\u8868\u4e2d\u5305\u542b\u5927\u91cf\u6570\u636e\u65f6\u3002<\/p>\n

\u8bbe\u7f6e\u7d22\u5f15\u7684\u6b65\u9aa4\uff1a<\/strong><\/p>\n

    \n
  1. \u786e\u5b9a\u8981\u5efa\u7acb\u7d22\u5f15\u7684\u5217\uff1a<\/strong>\u9009\u62e9\u7ecf\u5e38\u7528\u4e8e\u67e5\u8be2\u6216\u8fde\u63a5\u7684\u5217\uff0c\u7d22\u5f15\u8fd9\u4e9b\u5217\u53ef\u4ee5\u52a0\u901f\u67e5\u8be2\u3002<\/li>\n
  2. \u521b\u5efa\u4e00\u4e2a\u7d22\u5f15\uff1a<\/strong>\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u521b\u5efa\u7d22\u5f15\uff1a<\/li>\n<\/ol>\n
    CREATE INDEX index_name ON table_name (column_name);<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \n
    1. \n
      \u9009\u62e9\u7d22\u5f15\u7c7b\u578b\uff1a<\/strong>\u5e38\u89c1\u7684\u7d22\u5f15\u7c7b\u578b\u5305\u62ec\uff1a<\/p>\n
        \n
      •  B-Tree \u7d22\u5f15\uff1a<\/strong>\u7528\u4e8e\u8303\u56f4\u67e5\u8be2\u548c\u7cbe\u786e\u5339\u914d\u67e5\u8be2\u3002\u8fd9\u662f MySQL \u4e2d\u6700\u5e38\u7528\u7684\u7d22\u5f15\u7c7b\u578b\u3002<\/li>\n
      •  \u54c8\u5e0c\u7d22\u5f15\uff1a<\/strong>\u7528\u4e8e\u7cbe\u786e\u5339\u914d\u67e5\u8be2\u3002\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u54c8\u5e0c\u7d22\u5f15\u6bd4 B-Tree \u7d22\u5f15\u66f4\u5feb\u3002<\/li>\n<\/ul>\n<\/li>\n
      • \n
        \u6307\u5b9a\u7d22\u5f15\u9009\u9879\uff1a<\/strong>\u60a8\u53ef\u4ee5\u4f7f\u7528\u7d22\u5f15\u9009\u9879\u6765\u4f18\u5316\u7d22\u5f15\uff0c\u4f8b\u5982\uff1a<\/p>\n
          \n
        •  UNIQUE\uff1a<\/strong>\u521b\u5efa\u552f\u4e00\u7d22\u5f15\uff0c\u786e\u4fdd\u7d22\u5f15\u5217\u4e2d\u7684\u503c\u662f\u552f\u4e00\u7684\u3002<\/li>\n
        •  FULLTEXT\uff1a<\/strong>\u521b\u5efa\u5168\u6587\u7d22\u5f15\uff0c\u7528\u4e8e\u5728\u6587\u672c\u6570\u636e\u4e2d\u8fdb\u884c\u5feb\u901f\u641c\u7d22\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n
          \u8bbe\u7f6e\u7d22\u5f15\u7684\u597d\u5904\uff1a<\/strong><\/p>\n
            \n
          • \u63d0\u9ad8\u67e5\u8be2\u6027\u80fd<\/li>\n
          • \u51cf\u5c11\u670d\u52a1\u5668\u8d1f\u8f7d<\/li>\n
          • \u6539\u5584\u8fde\u63a5\u901f\u5ea6<\/li>\n
          • \u4f18\u5316\u6392\u5e8f\u548c\u5206\u7ec4\u64cd\u4f5c<\/li>\n<\/ul>\n
            \u8bbe\u7f6e\u7d22\u5f15\u7684\u6ce8\u610f\u4e8b\u9879\uff1a<\/strong><\/p>\n
              \n
            • \u53ea\u6709\u5728\u67e5\u8be2\u6216\u8fde\u63a5\u7ecf\u5e38\u4f7f\u7528\u7684\u60c5\u51b5\u4e0b\u624d\u521b\u5efa\u7d22\u5f15\u3002\u8fc7\u591a\u7684\u7d22\u5f15\u4f1a\u964d\u4f4e\u5199\u5165\u6027\u80fd\u3002<\/li>\n
            • \u5b9a\u671f\u7ef4\u62a4\u7d22\u5f15\u4ee5\u786e\u4fdd\u5176\u4fdd\u6301\u6700\u65b0\u72b6\u6001\u3002<\/li>\n
            • \u7d22\u5f15\u53ea\u80fd\u521b\u5efa\u5728\u8868\u6216\u8868\u7684\u5b50\u96c6\u4e0a\u3002<\/li>\n<\/ul>\n
              \u4ee5\u4e0a\u5c31\u662f\u600e\u4e48\u8bbe\u7f6e\u7d22\u5f15\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
              mysql\u7d22\u5f15\u662f\u4e00\u79cd\u52a0\u901f\u67e5\u627e\u548c\u68c0\u7d22\u6570\u636e\u7684\u7ed3\u6784\u3002\u521b\u5efa\u7d22\u5f15\u9700\u8981\u4ee5\u4e0b\u6b65\u9aa4\uff1a\u786e\u5b9a\u8981\u7d22\u5f15\u7684\u5217\uff08\u7528\u4e8e\u67e5\u8be2\u6216\u8fde\u63a5\u7684\u5217\uff09\u3002\u4f7f\u7528create index\u8bed\u6cd5\u521b\u5efa\u7d22\u5f15\u3002\u9009\u62e9\u7d22\u5f15\u7c7b\u578b\uff08b-tree\u6216\u54c8\u5e0c\u7d22\u5f15\uff09\u3002\u6307\u5b9a\u7d22\u5f15\u9009\u9879\uff08\u4f8b\u5982unique\u6216fulltext\uff09\u3002\u7d22\u5f15\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\u3001\u51cf\u5c11\u670d\u52a1\u5668\u8d1f\u8f7d\u3001\u6539\u5584\u8fde\u63a5\u901f\u5ea6\uff0c\u4f46\u5e94\u8c28\u614e\u521b\u5efa\uff0c\u907f\u514d\u8fc7\u91cf\u7d22\u5f15\u964d\u4f4e\u5199\u5165\u6027\u80fd\uff0c\u5e76\u5b9a\u671f\u7ef4\u62a4\u4ee5\u4fdd\u6301\u6700\u65b0\u72b6\u6001\u3002 \u5982\u4f55\u8bbe\u7f6e MySQL \u7d22\u5f15 MySQL \u7d22\u5f15\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u5b83\u6709\u52a9\u4e8e\u5feb\u901f\u67e5\u627e\u548c\u68c0\u7d22\u6570\u636e\u3002\u5efa\u7acb\u7d22\u5f15\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\uff0c\u5c24\u5176\u662f\u5f53\u8868\u4e2d\u5305\u542b\u5927\u91cf\u6570\u636e\u65f6\u3002 \u8bbe\u7f6e\u7d22\u5f15\u7684\u6b65\u9aa4\uff1a \u786e\u5b9a\u8981\u5efa\u7acb\u7d22\u5f15\u7684\u5217\uff1a\u9009\u62e9\u7ecf\u5e38\u7528\u4e8e\u67e5\u8be2\u6216\u8fde\u63a5\u7684\u5217\uff0c\u7d22\u5f15\u8fd9\u4e9b\u5217\u53ef\u4ee5\u52a0\u901f\u67e5\u8be2\u3002 \u521b\u5efa\u4e00\u4e2a\u7d22\u5f15\uff1a\u4f7f\u7528\u4ee5\u4e0b\u8bed\u6cd5\u521b\u5efa\u7d22\u5f15\uff1a CREATE INDEX index_name ON table_name (column_name); \u767b\u5f55\u540e\u590d\u5236 \u9009\u62e9\u7d22\u5f15\u7c7b\u578b\uff1a\u5e38\u89c1\u7684\u7d22\u5f15\u7c7b\u578b\u5305\u62ec\uff1a B-Tree \u7d22\u5f15\uff1a\u7528\u4e8e\u8303\u56f4\u67e5\u8be2\u548c\u7cbe\u786e\u5339\u914d\u67e5\u8be2\u3002\u8fd9\u662f MySQL \u4e2d\u6700\u5e38\u7528\u7684\u7d22\u5f15\u7c7b\u578b\u3002 \u54c8\u5e0c\u7d22\u5f15\uff1a\u7528\u4e8e\u7cbe\u786e\u5339\u914d\u67e5\u8be2\u3002\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u54c8\u5e0c\u7d22\u5f15\u6bd4 B-Tree \u7d22\u5f15\u66f4\u5feb\u3002 \u6307\u5b9a\u7d22\u5f15\u9009\u9879\uff1a\u60a8\u53ef\u4ee5\u4f7f\u7528\u7d22\u5f15\u9009\u9879\u6765\u4f18\u5316\u7d22\u5f15\uff0c\u4f8b\u5982\uff1a UNIQUE\uff1a\u521b\u5efa\u552f\u4e00\u7d22\u5f15\uff0c\u786e\u4fdd\u7d22\u5f15\u5217\u4e2d\u7684\u503c\u662f\u552f\u4e00\u7684\u3002 FULLTEXT\uff1a\u521b\u5efa\u5168\u6587\u7d22\u5f15\uff0c\u7528\u4e8e\u5728\u6587\u672c\u6570\u636e\u4e2d\u8fdb\u884c\u5feb\u901f\u641c\u7d22\u3002 \u8bbe\u7f6e\u7d22\u5f15\u7684\u597d\u5904\uff1a \u63d0\u9ad8\u67e5\u8be2\u6027\u80fd \u51cf\u5c11\u670d\u52a1\u5668\u8d1f\u8f7d \u6539\u5584\u8fde\u63a5\u901f\u5ea6 \u4f18\u5316\u6392\u5e8f\u548c\u5206\u7ec4\u64cd\u4f5c \u8bbe\u7f6e\u7d22\u5f15\u7684\u6ce8\u610f\u4e8b\u9879\uff1a \u53ea\u6709\u5728\u67e5\u8be2\u6216\u8fde\u63a5\u7ecf\u5e38\u4f7f\u7528\u7684\u60c5\u51b5\u4e0b\u624d\u521b\u5efa\u7d22\u5f15\u3002\u8fc7\u591a\u7684\u7d22\u5f15\u4f1a\u964d\u4f4e\u5199\u5165\u6027\u80fd\u3002 \u5b9a\u671f\u7ef4\u62a4\u7d22\u5f15\u4ee5\u786e\u4fdd\u5176\u4fdd\u6301\u6700\u65b0\u72b6\u6001\u3002 \u7d22\u5f15\u53ea\u80fd\u521b\u5efa\u5728\u8868\u6216\u8868\u7684\u5b50\u96c6\u4e0a\u3002 \u4ee5\u4e0a\u5c31\u662f\u600e\u4e48\u8bbe\u7f6e\u7d22\u5f15\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-5169","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5169","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=5169"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/5169\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=5169"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=5169"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=5169"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}