合併兩列弗朗一個表到一個新的觀點與SQL

Question

我有了兩列，失敗者和勝利者的表。我可以創建一個列的新觀點：「玩家」擁有所有的輸家和贏家，但唯一的值？

Answer 1

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