How to completely delete sqlserver

The method to delete a SQL Server database or instance is as follows: Delete the database directly: Use the DROP DATABASE statement. Uninstall the SQL Server instance: stop the service, uninstall the software, delete the installation directory, data directory, and registry keys. Delete residual files: Manually delete residual files located at the specified location.

How to completely delete SQL Server

Delete the database directly

The most direct way is to delete the database directly. This will delete the database and all its data and objects.

Use the following T-SQL statement:

DROP DATABASE [database_name];

Uninstall the SQL Server instance

If you need to delete the SQL Server instance, you can perform the following steps:

1. Stop the SQL Server service.
2. Uninstall the SQL Server software.
3. Delete the SQL Server installation directory (C:\Program Files\Microsoft SQL Server by default).
4. Delete the SQL Server data directory (C:\Program Files\Microsoft SQL Server\MSSQL13.MSSQLSERVER\MSSQL\DATA by default).

Delete registry keys

After deleting the SQL Server instance, you also need to delete related entries in the registry. This can be done by following these steps:

1. Open the Registry Editor (regedit.exe).

2. Navigate to the following registry key:

   • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server
3. Delete the subkeys related to the instance to be deleted.

Delete residual files in the file system

In some cases, deleting a SQL Server instance may leave residual files in the file system. These files are typically located in the following location:

• C:\Program Files\Microsoft SQL Server\MSSQL
• C:\Program Files (x86) \Microsoft SQL Server\MSSQL
• C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\MSSQLServer

Manually delete these files.

The above is the detailed content of How to completely delete sqlserver. For more information, please follow other related articles on the PHP Chinese website!