Hi! I am trying to do the Core Designer cert. When trying to do part 4 of the practical, I end up with 980 rows and not 985.
I have inferred all data types as suggested in earlier steps.
I am doing an inner join across all three datasets and have tried both pre-filter and post-filter on the year column with >= 2008 and =< 2012 as my conditions.
Not sure what I am missing - any help much appreciated 🙂