{"id":47359,"date":"2023-12-11T15:11:35","date_gmt":"2023-12-11T07:11:35","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=47359"},"modified":"2023-12-11T15:11:35","modified_gmt":"2023-12-11T07:11:35","slug":"%e8%b0%88%e8%b0%88%e4%bd%a0%e5%af%b9mysql%e7%b4%a2%e5%bc%95%e7%9a%84%e7%90%86%e8%a7%a3%ef%bc%9f-4","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/11\/%e8%b0%88%e8%b0%88%e4%bd%a0%e5%af%b9mysql%e7%b4%a2%e5%bc%95%e7%9a%84%e7%90%86%e8%a7%a3%ef%bc%9f-4\/","title":{"rendered":"\u8c08\u8c08\u4f60\u5bf9MySQL\u7d22\u5f15\u7684\u7406\u89e3\uff1f"},"content":{"rendered":"

“`MySQL\u7d22\u5f15\u4f7f\u7528\u7684\u6570\u636e\u7ed3\u6784\u4e3b\u8981\u6709BTree\u7d22\u5f15<\/strong> \u548c \u54c8\u5e0c\u7d22\u5f15<\/strong> \u3002\u5bf9\u4e8e\u54c8\u5e0c\u7d22\u5f15\u6765\u8bf4\uff0c\u5e95\u5c42\u7684\u6570\u636e\u7ed3\u6784\u5c31\u662f\u54c8\u5e0c\u8868\uff0c\u56e0\u6b64\u5728\u7edd\u5927\u591a\u6570\u9700\u6c42\u4e3a\u5355\u6761\u8bb0\u5f55\u67e5\u8be2\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u9009\u62e9\u54c8\u5e0c\u7d22\u5f15\uff0c\u67e5\u8be2\u6027\u80fd\u6700\u5feb\uff1b\u5176\u4f59\u5927\u90e8\u5206\u573a\u666f\uff0c\u5efa\u8bae\u9009\u62e9BTree\u7d22\u5f15\u3002<\/p>\n

MySQL\u7684BTree\u7d22\u5f15\u4f7f\u7528\u7684\u662fB\u6811\u4e2d\u7684B+Tree\uff0c\u4f46\u5bf9\u4e8e\u4e3b\u8981\u7684\u4e24\u79cd\u5b58\u50a8\u5f15\u64ce\u7684\u5b9e\u73b0\u65b9\u5f0f\u662f\u4e0d\u540c\u7684\u3002<\/p>\n

<ul><li><strong>MyISAM:<\/strong> B+Tree\u53f6\u8282\u70b9\u7684data\u57df\u5b58\u653e\u7684\u662f\u6570\u636e\u8bb0\u5f55\u7684\u5730\u5740\u3002\u5728\u7d22\u5f15\u68c0\u7d22\u7684\u65f6\u5019\uff0c\u9996\u5148\u6309\u7167B+Tree\u641c\u7d22\u7b97\u6cd5\u641c\u7d22\u7d22\u5f15\uff0c\u5982\u679c\u6307\u5b9a\u7684Key\u5b58\u5728\uff0c\u5219\u53d6\u51fa\u5176 data \u57df\u7684\u503c\uff0c\u7136\u540e\u4ee5 data \u57df\u7684\u503c\u4e3a\u5730\u5740\u8bfb\u53d6\u76f8\u5e94\u7684\u6570\u636e\u8bb0\u5f55\u3002\u8fd9\u88ab\u79f0\u4e3a\u201c\u975e\u805a\u7c07\u7d22\u5f15\u201d\u3002<\/li><li><strong>InnoDB:<\/strong> \u5176\u6570\u636e\u6587\u4ef6\u672c\u8eab\u5c31\u662f\u7d22\u5f15\u6587\u4ef6\u3002\u76f8\u6bd4MyISAM\uff0c\u7d22\u5f15\u6587\u4ef6\u548c\u6570\u636e\u6587\u4ef6\u662f\u5206\u79bb\u7684\uff0c\u5176\u8868\u6570\u636e\u6587\u4ef6\u672c\u8eab\u5c31\u662f\u6309B+Tree\u7ec4\u7ec7\u7684\u4e00\u4e2a\u7d22\u5f15\u7ed3\u6784\uff0c\u6811\u7684\u53f6\u8282\u70b9data\u57df\u4fdd\u5b58\u4e86\u5b8c\u6574\u7684\u6570\u636e\u8bb0\u5f55\u3002\u8fd9\u4e2a\u7d22\u5f15\u7684key\u662f\u6570\u636e\u8868\u7684\u4e3b\u952e\uff0c\u56e0\u6b64InnoDB\u8868\u6570\u636e\u6587\u4ef6\u672c\u8eab\u5c31\u662f\u4e3b\u7d22\u5f15\u3002\u8fd9\u88ab\u79f0\u4e3a\u201c\u805a\u7c07\u7d22\u5f15\uff08\u6216\u805a\u96c6\u7d22\u5f15\uff09\u201d\u3002\u800c\u5176\u4f59\u7684\u7d22\u5f15\u90fd\u4f5c\u4e3a\u8f85\u52a9\u7d22\u5f15\uff0c\u8f85\u52a9\u7d22\u5f15\u7684data\u57df\u5b58\u50a8\u76f8\u5e94\u8bb0\u5f55\u4e3b\u952e\u7684\u503c\u800c\u4e0d\u662f\u5730\u5740\uff0c\u8fd9\u4e5f\u662f\u548cMyISAM\u4e0d\u540c\u7684\u5730\u65b9\u3002<strong>\u5728\u6839\u636e\u4e3b\u7d22\u5f15\u641c\u7d22\u65f6\uff0c\u76f4\u63a5\u627e\u5230key\u6240\u5728\u7684\u8282\u70b9\u5373\u53ef\u53d6\u51fa\u6570\u636e\uff1b\u5728\u6839\u636e\u8f85\u52a9\u7d22\u5f15\u67e5\u627e\u65f6\uff0c\u5219\u9700\u8981\u5148\u53d6\u51fa\u4e3b\u952e\u7684\u503c\uff0c\u518d\u8d70\u4e00\u904d\u4e3b\u7d22\u5f15\u3002<\/strong> <strong>\u56e0\u6b64\uff0c\u5728\u8bbe\u8ba1\u8868\u7684\u65f6\u5019\uff0c\u4e0d\u5efa\u8bae\u4f7f\u7528\u8fc7\u957f\u7684\u5b57\u6bb5\u4f5c\u4e3a\u4e3b\u952e\uff0c\u4e5f\u4e0d\u5efa\u8bae\u4f7f\u7528\u975e\u5355\u8c03\u7684\u5b57\u6bb5\u4f5c\u4e3a\u4e3b\u952e\uff0c\u8fd9\u6837\u4f1a\u9020\u6210\u4e3b\u7d22\u5f15\u9891\u7e41\u5206\u88c2\u3002<\/strong><\/li><\/ul><\/p>\n

PS\uff1a\u6574\u7406\u81ea\u300aJava\u5de5\u7a0b\u5e08\u4fee\u70bc\u4e4b\u9053\u300b<\/p>\n

“`<\/p>\n","protected":false},"excerpt":{"rendered":"

“`MySQL\u7d22\u5f15\u4f7f\u7528\u7684\u6570\u636e\u7ed3\u6784\u4e3b\u8981\u6709BTree\u7d22\u5f15 \u548c \u54c8\u5e0c\u7d22\u5f15 \u3002\u5bf9\u4e8e\u54c8\u5e0c\u7d22\u5f15\u6765\u8bf4\uff0c\u5e95\u5c42\u7684\u6570\u636e […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-47359","post","type-post","status-publish","format-standard","hentry","category-c"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/47359","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\/7"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=47359"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/47359\/revisions"}],"predecessor-version":[{"id":47360,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/47359\/revisions\/47360"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=47359"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=47359"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=47359"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}