一、在官网中选择合适的SQL Server下载
https://www.microsoft.com/zh-cn/sql-server/sql-server-downloads
二、安装步骤
https://blog.csdn.net/qq_33556442/article/details/100885939
二、如何彻底卸载掉SQL Server2019
https://blog.csdn.net/qq_33556442/article/details/102653971?utm_medium=distribute.pc_aggpage_search_result.none-task-blog-2~all~first_rank_v2~rank_v25-1-102653971.nonecase&utm_term=sqlserver2019%20%E5%8D%B8%E8%BD%BD