log-in-to-an-instance-of-sql-server-command-prompt.md

title	Log In to an Instance of SQL Server (Command Prompt) | Microsoft Docs
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Log In to an Instance of SQL Server (Command Prompt)

[!INCLUDEappliesto-ss-xxxx-xxxx-xxx-md] This topic describes how to test connectivity to an instance of [!INCLUDEssNoVersion], use the sqlcmd utility.

To log in to the default instance of SQL Server

1. From a command prompt, enter the following command to connect by using Windows Authentication:

   sqlcmd [ /E ] [ /S servername ]  
   
   

To log in to a named instance of SQL Server

1. From a command prompt, enter the following command to connect by using Windows Authentication:

   sqlcmd [ /E ] /S servername\instancename  
   
   

See Also

sqlcmd Utility
osql Utility