mysql创建btree索引
时间: 2023-10-09 22:10:39 浏览: 112
在MySQL中,可以通过使用CREATE INDEX语句来创建B-Tree索引。B-Tree索引是MySQL中最常用的索引类型之一。它的特点是可以高效地支持范围查找,并且可以将根节点放在内存中以加快查询速度。在B-Tree索引中,每个页的存储空间是有限的,如果数据量较大,每个节点的键值也会变小,这可能导致B-Tree的深度增加,进而增加查询的磁盘IO次数,影响查询效率。所以在创建B-Tree索引时,需要根据实际情况来选择合适的列作为索引,以优化查询性能。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* [Mysql中的Btree与Hash索引比较](https://download.csdn.net/download/weixin_38503483/12831200)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 50%"]
- *2* *3* [MYSQL索引之B+tree](https://blog.csdn.net/qq_33513600/article/details/119697073)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 50%"]
[ .reference_list ]
阅读全文