ssas - Effecient way to get NonEmpty members -

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consider dimension_a , dimension_b , measure_amt require first 100 non-empty members cross-join between dimension_a , dimension_b measure_amt. following query works takes lot of time since these dimensions large(from million 20 million)

 set subset(dimension_a.levels(1),0,100)     set x subset(nonemptycrossjoin(a,dimension_b.levels(1)), 0, 100)     select [measures].[measure_amt] on 0 ,     x on 1      my_cube

and clause,

with set subset(dimension_a.levels(1),0,100) set x subset(nonemptycrossjoin(a,dimension_b.levels(1)), 0, 100) select [measures].[measure_amt] on 0 , x on 1  my_cube dimension_c.member_c1

fetching first 100 members of single dimension quick, nonempty function accounts of time. since require first 100 non-empty members , not next subset, there way write better query.

when say, "i require first 100 non-empty members cross-join between dimension_a , dimension_b measure_amt", assume mean want top 100 results, measure_amt not null 2 cross-joined sets.

if so, believe way write query may improve performance.

with      set [x] [dimension_a].levels(1) * [dimension_b].levels(1) select     [measures].[measure_amt] on 0,     subset(         nonempty(             [x]             , [measures].[measure_amt]         )         , 0         , 100     ) on 1      [my_cube]      [dimension_c].[member_c1]




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