I have created an SQL file for my SQL server. When I double-click on that, Microsoft SQL server Management Studio 18 is opened, username and password are asked, the query is opened and I can launch it.
I would like to do this automatically. Is there a commandline tool for this? (I already checked, I don’t have
mssql-cli on my computer)
I suggest you use sqlcmd it is part of SQL Server so hopefully you will already have it installed.
See this other answer regarding which part of the SQL Server installation it is included in.
In summary it is included as part of Management Tools – Basic, but you can also install it separately if required.