如何在Informatica中为特定组实施累积总和

Question

I have below data set

ESN | DATE   | SV_NO
123 | 22-NOV | 2
123 | 23-NOV | 2
123 | 25-NOV | 3
123 | 27-NOV | 2
123 | 27-NOV | 3
123 | 28-NOV | 4
123 | 28-NOV | 2
124 | 21-NOV | 0
124 | 23-NOV | 3
124 | 24-NOV | 3
124 | 25-NOV | 2
124 | 27-NOV | 2
124 | 28-NOV | 3
124 | 30-NOV | 0

and I want to achieve below output using informatica . All data is sorted based on ESN and DATE . I have to calculate the SUM on the basis of ESN and SV_NO 0.11 value is stored in one variable port.

ESN | DATE   | SV_NO | SUM
123 | 22-NOV | 2     | 0.11
123 | 23-NOV | 2     | 0.22
123 | 25-NOV | 3     | 0.11
123 | 27-NOV | 2     | 0.33
123 | 27-NOV | 3     | 0.22
123 | 28-NOV | 4     | 0.11
123 | 28-NOV | 2     | 0.44
124 | 21-NOV | 0     | 0.11
124 | 23-NOV | 3     | 0.11
124 | 24-NOV | 3     | 0.22
124 | 25-NOV | 2     | 0.11
124 | 27-NOV | 2     | 0.22
124 | 28-NOV | 3     | 0.33
124 | 30-NOV | 0     | 0.22

Please provide me the proper solution for this.

Answer 1

First sort the data by ESN and SV_NO. Then in an Expression transformation, do the following:

ESN: <-- I/O port
DATE: <-- I/O port
SV_NO: <-- I/O port
v_CONST:=0.11
v_SUM:= IIF(ESN = v_prev_ESN AND SV_NO=v_prev_SV_NO, v_SUM+v_CONST, v_CONST)
o_SUM:= <-- Output port
v_prev_ESN:= ESN
v_prev_SV_NO:= SV_NO

Now, again sort the data by ESN and DATE before loading the target