Sql 在oracle中将行输出转换为列

我希望输出为一列三行。

---

有关更多详细信息，请参见图片。

使用

union all

：

select count_emp from cte1
union all
select count_dept from cte2
union all
select count_hr from cte3;

请注意，结果不保证按任何特定顺序排列。我强烈建议您标记行：

select 'emp', count_emp as cnt from cte1
union all
select 'dept', count_dept from cte2
union all
select 'hr', count_hr from cte3;

select 'emp', count_emp as cnt from cte1
union all
select 'dept', count_dept from cte2
union all
select 'hr', count_hr from cte3;