例3 - Teradata Database - Teradata Vantage NewSQL Engine - 集合演算子、ビュー定義の例。

REPLACE VIEW v AS 
   SELECT x1 
   FROM table_1 
   WHERE x1 IN 
    (SELECT x2 
     FROM table_2
     UNION
     SELECT x3 
     FROM table_3
    );
SELECT * FROM v;