mdx - mondrian - Count only unique members in sets -


i new mondrian, , need mdx query.

for example:

year 1 id_client: 1,2 year 2 id_client: 2,3 year 3 id_client: 1

if try "distinct-count" aggregator id_client, result:

year 1  2 year 2  2 year 3  1

how can calculate new id_client? need result:

years  new year 1  2   both clients new year 2  1   client id = 3 new year 3  0   no new clients


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