在redshift中更新多个表中的数据

Question

假设我在redshift中有三个表T1，T2和T3，我想通过连接这些表来创建一个单独的表，如果T1，T2和T3发生任何变化，如何更新第4个表中的数据？

Answer 1

Perhaps you can try using a view instead for the 4th table. So something like this:

create view T4 as (
    select
        ....
    from T1 ...
    join T2 ...
    join T3 ...
)

Views are like 'stored queries', so everything you query T4 it will use the latest data in all the other tables