SQL Server 2019 为所有数据工作负载带来了创新的安全性和合规性功能、业界领先的性能、任务关键型可用性和高级分析，现在还支持内置的大数据。

系统版本：Centos7.7 ，内存4G（SQL Server内存要求至少2G），硬盘40G，1核CPU

SQL Server版本：SQL Server 2019，

SQL Server Management Studio 版本：V18.4，安装在windows客户端，Windows 2008R2(64位)或Windows8.1(64位)以上

[root@localhost ~]# sed -i '/^SELINUX/s/enforcing/disabled/g' /etc/selinux/config && setenforce 0

[root@localhost ~]# curl //packages.microsoft.com/config/rhel/7/prod.repo -o /etc/yum.repos.d/msprod.repo
[root@localhost ~]# yum -y install mssql-tools unixODBC-devel bzip2 gdb libsss_nss_idmap cyrus-sasl cyrus-sasl-gssapi

下载文章上面提供的SQL Server2019，上传到服务器并安装

[root@localhost ~]# rpm -ivh mssql-server-15.0.4003.23-3.x86_64.rpm
Preparing...                          ################################# [100%]
Updating / installing...
   1:mssql-server-15.0.4003.23-3      ################################# [100%]

+--------------------------------------------------------------+
Please run 'sudo /opt/mssql/bin/mssql-conf setup'
to complete the setup of Microsoft SQL Server
+--------------------------------------------------------------+

[root@localhost ~]# /opt/mssql/bin/mssql-conf setup 
usermod: no changes
Choose an edition of SQL Server:
  1) Evaluation (free, no production use rights, 180-day limit)
  2) Developer (free, no production use rights)
  3) Express (free)
  4) Web (PAID)
  5) Standard (PAID)
  6) Enterprise (PAID) - CPU Core utilization restricted to 20 physical/40 hyperthreaded
  7) Enterprise Core (PAID) - CPU Core utilization up to Operating System Maximum
  8) I bought a license through a retail sales channel and have a product key to enter.

Details about editions can be found at
//go.microsoft.com/fwlink/?LinkId=2109348&clcid=0x409

Use of PAID editions of this software requires separate licensing through a
Microsoft Volume Licensing program.
By choosing a PAID edition, you are verifying that you have the appropriate
number of licenses in place to install and run this software.

Enter your edition(1-8): 3 		#这里选择了Express版本
The license terms for this product can be found in
/usr/share/doc/mssql-server or downloaded from:
//go.microsoft.com/fwlink/?LinkId=2104294&clcid=0x409

The privacy statement can be viewed at:
//go.microsoft.com/fwlink/?LinkId=853010&clcid=0x409

Do you accept the license terms? [Yes/No]:Yes	#输入Yes接受许可条目

Enter the SQL Server system administrator password: 		#设置SA管理员密码
Confirm the SQL Server system administrator password: 
Configuring SQL Server...

The licensing PID was successfully processed. The new edition is [Express Edition].
ForceFlush is enabled for this instance. 
ForceFlush feature is enabled for log durability.
Created symlink from /etc/systemd/system/multi-user.target.wants/mssql-server.service to /usr/lib/systemd/system/mssql-server.service.
Setup has completed successfully. SQL Server is now starting.

[root@localhost ~]# echo 'export PATH=$PATH:/opt/mssql-tools/bin' > /etc/profile.d/mssql.sh 
[root@localhost ~]# source !$
source /etc/profile.d/mssql.sh

[root@localhost ~]# firewall-cmd --permanent --add-service=mssql 
success
[root@localhost ~]# firewall-cmd --reload
success

[root@localhost ~]# sqlcmd -S localhost -U sa
Password: 
# 显示系统数据库
1> select name,database_id from sys.databases;
# 执行
2> go
name                                                                                                                             database_id
-------------------------------------------------------------------------------------------------------------------------------- -----------
master                                                                                                                                     1
tempdb                                                                                                                                     2
model                                                                                                                                      3
msdb                                                                                                                                       4

(4 rows affected)
# 查看软件版本
1> SELECT @@VERSION
2> go
                                                                                                                                                                                                                                                                                                            
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Microsoft SQL Server 2019 (RTM-CU1) (KB4527376) - 15.0.4003.23 (X64) 
	Dec  6 2019 14:53:33 
	Copyright (C) 2019 Microsoft Corporation
	Express Edition (64-bit) on Linux (CentOS Linux 7 (Core))                                                                                                      

(1 rows affected)
1>

安装上面提供的SSMS管理软件，安装完成之后搜索”ssms”，打开该管理软件

输入服务器地址，身份验证选择“SQL Server身份验证”，输入用户名密码，然后连接。

查看一下SQL Server版本

内存设置为2G的时候，安装SQL Server2019会出现安装失败，提示内存最少为2000M，所以设置不要低于2G内存，安装还是很简单的。

本文原创地址：//gulass.cn/centos7-instal-mssql-2019.html编辑：逄增宝，审核员：逄增宝