Murat, could you be more specific? Count it in what way? Are you looking to sum all the values in a column? Are you wanting to count all the rows where a column is empty, or not empty? And are you doing this in a workflow or on a form? What version of Nintex are you using?
Let me explain. I have a SP Table like
ID | A | B | C | D
1 | cr | x | x | 1
2 | cr | x | x | 2
3 | x | x | x | 2
4 | cr | x | x | 3
What i need is the amount of the column "A" (where the value is "cr") and put the value in columnd D.
In my example (4 Entries) there are 3 "cr".
The Nintex Workflow should calculate and put the value in D.
I am using 220.127.116.11 (WF 2013).
Hope it helps.
Query list activity - filter where column A is = current item value of column A, store ID in collection variable.
Collection activity - on your collection variable, perform a "count"