Mssql-cli is a solid, modern, and user-friendly command-line tool released under an open source license.
Microsoft released SQL Server 2017 for Linux early this year. Now it is releasing mssql-cli, a cross-platform command-line client for SQL Server with modern features such as auto-completion and syntax highlighting.
Read more….https://opensource.com/article/18/1/ms-sql-command-line-client