在postgresql中获取源数据和聚合数据

我有以下疑问：

SELECT round(cast(estimated_memusage as numeric), 2) as x,
       memusage as y
FROM measures_predictions

我还想得到每列的最小值和最大值

---

有没有一种方法可以构建一个查询，返回上面的第一个select和最小值、最大值，而不必对相同的数据（一个正常，一个分组）运行两个select，是否可以临时存储数据，使组成为一个组，并在最后发送两个结果？

您可以使用下面的方法

SELECT 
    round(cast(estimated_memusage as numeric),2) as x
  , memusage as y
  , min(ColumnName) over(partition by Columns) as Min 
  , max(ColumnName) over(partition by Columns) as Max FROM measures_predictions

:

select
    round(cast(estimated_memusage as numeric), 2) as x,
    memusage as y,
    min(estimated_memusage) over() as min_estimated_memusage,
    min(memusage) over () as min_memusage,
    max(estimated_memusage) over() as max_estimated_memusage,
    max(memusage) over () as max_memusage
from measures_predictions