Invalid column name error in WHERE clause, column selected with CASE

Question

I have a (rather complicated) SQL statement where I select data from lots of different tables, and to cope with a bad legacy data structure, I have a couple of custom colum

Answer 1

You cannot use ChannelValue column name in the where clause at the same select level.
You will have to put this whole select in a subquery.

select ....
from 
( 
your select query
) as innerSelect
where ChannelValue > Limit * p.Percentage / 100