Question

I current have two views that are pulling in different results.
One is in the old database and the other is in the new.
the ond view pulls in ~50000 records whereas the new view is pulling in ~40000
Both have almost all the same data except for one or two columns.

Is there a way where I can combine the two and see what is different?

I have limit knowledge when it comes to queries and joins.

I tried left joining and right joining but it is giving me 100000+ results. I dont want that. I want ~50000 results and have the columns null where there is no info.

Is this possible? thanks

Answer 1

You can try the following. First you join the tables with a left join, and later you filter the null values from the new.

something like this

select  *
from    oldview o
        left join newview n
          on  o.field = n.field
where   n.value is null

That way you combine them, and have the newview values filtered with the where statement. The thing is, you first combine them, and afterwards you filter them.