Forum Discussion
Understanding One to many relationship?
Great question, and it touches upon one of the fundamentals of how Vertipaq works.
Your choice of "item" from one or the other table has a profound impact on the displayed data. If you pick it from the "dimension" table (the 1 side of the relationship) then you perform an inner join with strict filtering. If you choose to use the field from the "fact" table (the M side) then that is more like a left outer join.
By the way, the first option is preferred. If you don't like the strictness you can check the box "show items with no data" in the columns/rows well.
Great question, and it touches upon one of the fundamentals of how Vertipaq works.
Your choice of "item" from one or the other table has a profound impact on the displayed data. If you pick it from the "dimension" table (the 1 side of the relationship) then you perform an inner join with strict filtering. If you choose to use the field from the "fact" table (the M side) then that is more like a left outer join.
By the way, the first option is preferred. If you don't like the strictness you can check the box "show items with no data" in the columns/rows well.