+ Logs in to SQL Server with a Dedicated Administrator Connection (DAC). This kind of connection is used to troubleshoot a server. This will only work with server computers that support DAC. If DAC is not available, **sqlcmd** generates an error message and then exits. For more information about DAC, see [Diagnostic Connection for Database Administrators](../database-engine/configure-windows/diagnostic-connection-for-database-administrators.md). The -A option is not supported with the -G option. When connecting to SQL Database using -A, you must be a SQL server administrator. The DAC is not availble for an Azure Active Directory adminstrator.
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