usql is a universal command-line interface for PostgreSQL, MySQL, Oracle Database, SQLite3, Microsoft SQL Server, and many other databases including NoSQL and non-relational databases! usql provides a simple way to work with SQL and NoSQL databases via a command-line inspired by PostgreSQL's psql. usql supports most of the core psql features, such as variables, backticks, backslash commands and has additional features that psql does not, such as multiple database support, copying between databas...