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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=1739294849-Zv2w6dlqCvTS2vSwuk0vP75dNBlnmLpU-0-a22f5ccb9600b36d4e3d3c0b5aa9bcc1)
(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=1739294849-B6wxDYZQQCJcXY9sxR3dns6qRGgAFz4U-0-18c3e4469fd274fbbccb9827c6abb520)
(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=1739294849-KdydNXslZ2rL1pcgovi1Spy0811vgJI1-0-99dacbf54bc7bf1ad882681d7250ad3b)
![](https://epubservercos.yuewen.com/4CE233/23020641509740506/epubprivate/OEBPS/Images/42291_72_1.jpg?sign=1739294849-8JLvIOa71fmnx23MadtjGomQQ2q5perX-0-1e0c73809fc43bde26411123866f60f0)
(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=1739294849-KWaz9A4dYkv9tbeQk6a27r8KfJfwHS8m-0-017beb78c4aa229a7ddd4155a4fa33b4)
![](https://epubservercos.yuewen.com/4CE233/23020641509740506/epubprivate/OEBPS/Images/42291_73_1.jpg?sign=1739294849-66uaEb7IUNQgmjhRoSVfpkbr7WDzimIl-0-e92c86a6f8cff78e291e608ebcd704e2)