Hi to everyone,
I have a problem with aggregation.
I want to aggregate elements of a subset of a table.
Each subset is composed of 100 rows.
In each row there is a set of elements that could be duplicates.
I’d like to create a set of elements that contain, for each row, all the elements that there are in the previous rows.
In the following an example:
RowID0 | [a,b,c] | [a,b,c]
RowID1 | [a,b,c] | [a,b,c]
RowID2 | [a,c,c,e] | [a,b,c,e]
RowID3 | [a,b,c,d,e] | [a,b,c,e,d]
RowID4 | [c,f] | [a,b,c,e,d,f]
.
.
.
RowID99 | [z,j,z,y] | [a,b,c,e,d,f, … ,z,j,y]
RowID100 | [1,90,w] | [1,90,w]
RowID100 | [a,b] | [1,90,w,a,b]
ecc.
Can, someone, helps me?
Thanks,
Andrea