如何在oracle的一行中显示这些结果

Question

目前我有这三个表，结构非常相似

table1:id1 name1
table2:id2 name2
table3:id3 name3

我想要的结果将是

name1  name2   name3
value1 value2  value3

我尝试使用union，sql是：

select name1 from table1 where id1 = '1' 
union select name2 from table2 where id2 = '2' 
union select name3 from table3 where id3 = '3'

但结果证明是：

name1     
value1
value2
value3

Answer 1

SELECT
  (select name1 from table1 where id1 = '1'),
  (select name2 from table2 where id2 = '2'),
  (select name3 from table3 where id3 = '3')
from dual;

Answer 2

select name1,name2,name3 from table1,table2,table3
where table1.id1=1 and table2.id2=2 and table3.id3=3;

fiddle