SQL Database Editors - HeidiSQL, DBeaver
There is great software for SQL editing out there. Here are two awesome and free products I love and use.
HeidiSQL
HeidiSQL supports MariaDB, MySQL, MS SQL, PostreSQL, SQLite. It is a little bit easier to use and does all the jobs you might have with Databases. Import / Export of big files is fast and no problem.
DBeaver
DBeaver supports MySQL, PostgreSQL, SQLite, Oracle, DB2, SQL Server, Sybase, MS Access, Teradata, Firebird, Apache Hive, Phoenix, Presto, etc. It is a fully loaded database suite, eclipse ui based, creates really great diagrams of tables, and actually many many more. There is a community editon which is already powerful and a enterprise version with even more features.