需要输出查询作为列

Question

HI

实际上我需要一个类似的查询：

select x from a as col1 ,
select y from b as col2 ,
select Z from c as col3

，输出应该像

col1 | col2 | col3


 x   |  y   |  z  

Answer 1

如果您确定表a，b和c没有多行，则可以执行此操作。

select 
(select x from a) as col1 ,
(select y from b) as col2 ,
(select Z from c) as col3