如何安装SQLServerExpress版
安装sql server数据库没到
In this article, I am going to explain how to install the SQL Server Express edition. We will download the SQL Server 2017 Express edition and perform the custom installation. Before we dive-in into the installation and configuration process, let me introduce you to the SQL Server Express edition.
在本⽂中，我将解释如何安装SQL Server Express版本。 我们将下载SQL Server 2017 Express版本并执⾏⾃定义安装 。 在深⼊介绍安装和配置过程之前，让我向您介绍SQL Server Express版本。
SQL Server Express版本 (SQL Server Express edition)
SQL Server Express edition is the entry-level and the free-to-use edition of SQL Server. It can be used to deploy a small application or a website. You do not have to pay the license cost even though you’re using it in a production environment. It can be used to reduce the overall license cost as well; for example, you’re deploying a database mirroring. (Even though this feature is deprecated, a few organizations still using it). To configure High Safety with automatic failover, you must configure a witness server that keeps an eye on both servers. So, instead of paying for SQL Server standard edition just to monitor the mirror, we can use the Express edition of SQL Server. It will reduce the overall cost of database mirroring. You can review the limitations and list of supported features .
SQL Server Express版是SQL Server的⼊门级和免费版本。 它可以⽤于部署⼩型应⽤程序或⽹站。 即使在⽣产环境中使⽤许可证，也不必⽀付许可证费⽤。 它也可以⽤来降低总体许可成本； 例如，您正在部署数据库镜像。 （即使不赞成使⽤此功能，仍有⼀些组织仍在使⽤它）。 要配置具有⾃动故障转移功能的⾼安全性 ，您必须配置⼀个见证服务器，该服务器要密切注意两个服务器。 因此，我们可以使⽤SQL Server的Express版本，⽽不是为监视镜像⽽⽀付SQL Server标准版的费⽤。 它将减少数据库镜像的总体成本。 您可以在查看限制和⽀持的功能列表。
安装SQL Server Express版本 (Installation of SQL Server Express edition)
The SQL Server 2017 Express edition comes in three variants:
SQL Server 2017 Express版提供三种变体：
1. 下载
2. 下载
3. 下载
Once you download the installation file, run it by double-clicking on it. It starts another installer, which provides us three installation types to install the SQL Server.
下载安装⽂件后，请双击运⾏它。 它会启动另⼀个安装程序，该安装程序提供了三种安装类型来安装SQL Server。
1. Basic Installation: It installs the SQL Server with pre-defined basic configuration 基本安装：它以预定义的基本配置安装SQL
Server。
2. Custom Installation: This option can be used when you want to customize the database configurations. This option is
used when we want to install specific components only ⾃定义安装：当您要⾃定义数据库配置时，可以使⽤此选项。 仅当我们要安装特定组件时使⽤此选项
3. Download media: This option will download the iso file of the SQL Server Express edition. We can install it later 下载媒
体：此选项将下载SQL Server Express版本的iso⽂件。 我们可以稍后安装
We are going to perform a custom installation. To do that, click on the Custom type:
我们将执⾏⾃定义安装。 为此，请单击“ ⾃定义”类型：
In the next step, we must specify the location where we want to download the SQL Server Express edition media files. Click on Browse to navigate to the desired location. Specify the desired location in the MEDIA LOCATION text box and click on Install:
下⼀步，我们必须指定要下载SQL Server Express版媒体⽂件的位置。 单击浏览以导航到所需位置。 在“ 媒体位置”⽂本框中指定所需
的位置，然后单击“ 安装” ：
安装程序将开始下载SQL Server安装包的过程：
Once the install package is downloaded, the installer will extract it and begin the installation process. The installation is performed by the SQL Server Installation Center. On the installation screen, you can choose any of the following options：下载安装包后，安装程序将解压缩并开始安装过程。 安装由SQL Server安装中⼼执⾏。 在安装屏幕上，可以选择以下任⼀选项：
1. SQL Server standalone or add the feature to an existing installation
SQL Server独⽴版本或将功能添加到现有安装中
2. Install SQL Server Reporting Services
安装SQL Server Reporting Services
3. Install the SQL Server Management Studio
安装SQL Server Management Studio
4. Upgrade from old version to new version of SQL Server
从旧版本升级到新版本SQL Server
We want to install SQL Server; hence, click on the New SQL Server stand-alone installation or add features to the existing installation option. See the following image:
我们要安装SQL Server； 因此，请单击“ 新建SQL Server独⽴安装”或向现有安装选项中添加功能 。 见下图：
In the Global Rules step, the installer will verify that all the global rules are passed successfully. If any of the rules fail, we must fix the error to continue the installation process. See the following image:
在“ 全局规则”步骤中，安装程序将验证是否成功通过了所有全局规则。 如果任何规则失败，我们必须修复错误以继续安装过程。 见下
图：

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