合并两列弗朗一个表到一个新的观点与SQL

Question

我有了两列，失败者和胜利者的表。我可以创建一个列的新观点：“玩家”拥有所有的输家和赢家，但唯一的值？

Answer 1

create view x as 
select loser as player from table 
union 
select winner from table;