https://learn.microsoft.com/en-us/sql/tools/sqlcmd/sqlcmd-use-utility
    cmds to terminate blocking queries
https://learn.microsoft.com/en-us/sql/linux/sql-server-linux-setup-tools
https://learn.microsoft.com/en-us/sql/connect/odbc/linux-mac/connecting-with-sqlcmd
https://packages.microsoft.com/config/ubuntu/
https://packages.microsoft.com/config/ubuntu/22.04/
    curl -fsSL https://packages.microsoft.com/keys/microsoft.asc | sudo gpg --dearmor -o /etc/apt/trusted.gpg.d/packages.microsoft.gpg
    sudo su
    curl https://packages.microsoft.com/config/ubuntu/22.04/prod.list > /etc/apt/sources.list.d/mssql-release.list
    exit
    sqlcmd -S localhost -U SA -Q 'select @@VERSION'
    sudo apt update
    sudo apt install unixodbc-dev
    sudo ACCEPT_EULA=Y apt install mssql-tools18

sqlcmd
    -?
        help
    -A
        admin-prompt (win-only?)
    -Q -q
        query
    -i <file>
        run sql from file
    -o <file>
        redirect output to file
    -S
        server or Dsn (if -D is provided)
    -G
        use Azure Active Directory for authentication
        When you want to use an Azure AD user name and password, you can provide the -G
        The -G parameter generates the following connection string in the backend: ...
        Known issue: Always start with the -G option followed by the -U option.
    -d
        use database name
    -E
        trusted connection (the default and does not need to be specified)
    -C
        enable protocol encryption
    -No
        ...

commands
    :help
    :!!<shell-cmd>
    :connect myserver\instance1
    :go
        execute commands from buffer
    :r <file>
        loads commands from file into buffer
    :reset
        clear buffer