[SQL] how can i get this result....??(accumulation distinct count)
611012Nov 29 2007 — edited Dec 1 2007[SQL] how can i get this result....??(accumulation distinct count)
Hi everybody,
pls tell me how can it possible to get result?
### sample data
date visitor
----- ------
10-01 A
10-01 A
10-01 B
10-01 B
10-01 C
10-01 C
10-02 A
10-02 C
10-02 C
10-02 D
10-02 D
10-03 B
10-03 B
10-03 B
10-03 A
10-03 A
10-03 F
10-04 A
10-04 A
10-04 F
result that i want...like this.
date date_unqiue_visitors acc_date_unique_visitors
----- ------------- --------------------
10-01 3 3
10-02 3 4
10-03 3 5
10-04 2 5
date distinct visitors : count(distinct visitor)
but how can i get accumulation distinct visitor count???
Thanks to every body..