For a complete description see https://www.codeproject.com/Articles/33052/Visual-Representation-of-SQL-Joins
![](https://gioorgi.com/wp-content/uploads/2018/08/Visual_SQL_JOINS_cheat_sheet.jpg)
On Software from a free spirit headed to the future
For a complete description see https://www.codeproject.com/Articles/33052/Visual-Representation-of-SQL-Joins