Mdx: retrieve the number of days between two different date dimensions?

In fact, what happens is that during the calculation of your calculated measure, MDX takes the default measure of your cube because you haven't specified one Also, for your 2 relative_date levels in the dimension there are no members specified in the query so the default members are taken (probably the all member). Therefore the result is always 0 A possible solution is adding the 2 relative_date levels from your dimensions as measures to the cube. Then use these new measures in your calculation.

In fact, what happens is that during the calculation of your calculated measure, MDX takes the default measure of your cube because you haven't specified one. Also, for your 2 relative_date levels in the dimension there are no members specified in the query so the default members are taken (probably the all member). Therefore the result is always 0.

A possible solution is adding the 2 relative_date levels from your dimensions as measures to the cube. Then use these new measures in your calculation.

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