using BO Webi to merge 2 BW Queries
Query 1, Dates (01/01/2015), Country, Sales
Query 2, Year (2015), Country, Population
I want to merge on Country (no problem) and Year (problem). In Query 1 I created string variable "Year1" = FormatDate(Dates;"yyyy"), which returns value of 2015 - but BO will not allow me to merge Year1 from Query1 with Year (also a string) from Query2 
I have a feeling that BO still recognizes Year1 as it was originally, a date not a year. So how can I derive a "true" year dimension from the Date? Yes, yes, I know it would be possible if you could go back and edit the Query 1 to include year.... but that kind of change just for me will not happen, so I need to find a way to make this work on the reporting layer.... can Webi provide this level of flexibility?