我正在尝试在每一行中获得这样的总体平均数。您能帮助我如何使用 Snowflake SQL 最好地实现这一目标吗?
是(300+150+100)/3
在此输入图片描述
我能够使用窗口函数 AVG (Value) Over(按 ID 分区)按 ID 获取平均值
将
PARTITION BY
null
true
select $1 AS id, $2 AS value, avg(value) over (partition by id) as avg_by_id, avg(value) over (partition by true) as overall_avg from values (1,300), (1,150), (1,450), (2,150), (2,150), (3,100), (3,180), (3,20);