Hi and welcome to Advanced Installer forums.
In order to resolve this you can add the "SQL Server 2014" as a
launch condition in your package as described in the "
Set launch conditions" tutorial. In this case, if "SQL Server 2014" in not installed on the user's machine, a message will be displayed to inform the user that your package cannot be installed on his machine because SQL is not installed.
Another option is to add "SQL Server 2014" application as a
prerequisite in your package as described in the "
Add Prerequisites" tutorial. In this case, the "SQL Server 2014" application will be installed along with your application on the user's machine.
Let me know if this helped, otherwise give me more details about your scenario.
Best regards,
Eusebiu