![SequoiaDB分布式数据库权威指南](https://wfqqreader-1252317822.image.myqcloud.com/cover/100/43738100/b_43738100.jpg)
上QQ阅读APP看本书,新人免费读10天
设备和账号都新为新人
3.2.4 创建表和索引
在安装完SequoiaDB MySQL实例后,可以通过创建数据表对数据进行增查改删的操作。一般情况下,为了提高数据的检索速度,还需要创建索引。本节主要讲解如何使用SequoiaDB MySQL实例工具创建数据表和索引,操作均在SequoiaDB MySQL实例的Shell环境中完成。
(1)找到安装路径/etc/default/sequoiasql-mysql,进入MySQL实例的Shell环境:
![](https://epubservercos.yuewen.com/4CE233/23020641509740506/epubprivate/OEBPS/Images/42291_71_4.jpg?sign=1739152135-B3c5OuW9W79D1FoaGi7rJ7u11QgMp0ua-0-5d5749e862979dd5c05422c3c2b1ce6c)
(2)使用create database<database_name>创建数据库实例:
![](https://epubservercos.yuewen.com/4CE233/23020641509740506/epubprivate/OEBPS/Images/42291_71_5.jpg?sign=1739152135-LB3dIJZTIOoG8BzQUM4om3pCZyNmIfNn-0-4ac74bb7f3dd68f5a1ad3467c87997d6)
(3)使用create table<table_name>(<column_name><column_type>)创建数据表:
![](https://epubservercos.yuewen.com/4CE233/23020641509740506/epubprivate/OEBPS/Images/42291_71_6.jpg?sign=1739152135-UwINON5md8J7QWH8gHdq2vaAJRSH9lf8-0-6be99ad2bc96aad79de30b6a1376f830)
![](https://epubservercos.yuewen.com/4CE233/23020641509740506/epubprivate/OEBPS/Images/42291_72_1.jpg?sign=1739152135-lJwtXsoEwzOtnOlvgmuPDhWCUGhaqEWm-0-f69eaacfd2c709c7a5471bade0ede8d5)
(4)使用alter table<tablename>add index<indexname>(<columnname>)创建索引:
![](https://epubservercos.yuewen.com/4CE233/23020641509740506/epubprivate/OEBPS/Images/42291_72_2.jpg?sign=1739152135-qHrmJ0QNfsJ15xY4CAaY8nGvaVlvEhsQ-0-b6be5da2861ad3a145fd2bc68e3f43a9)
![](https://epubservercos.yuewen.com/4CE233/23020641509740506/epubprivate/OEBPS/Images/42291_73_1.jpg?sign=1739152135-a12VUEuay96r9MVUcSFc4Uj1qog2LByi-0-f5dc5391a15db68f62cf4bc4774f790a)