Autor YouCode - http://www.youcode.com.ar/sql/full-outer-join-248
The FULL OUTER JOIN keyword returns all rows from the left table (table1) and from the right table (table2).
The FULL OUTER JOIN keyword combines the result of both LEFT and RIGHT joins.SQL FULL OUTER JOIN Syntax
SELECT column_name(s) FROM table1 FULL OUTER JOIN table2 ON table1.column_name=table2.column_name;
http://www.youcode.com.ar/sql/full-outer-join-248