Calculations in a table- previous values based on a condition

Tue, 17 Nov 2015 09:10:31 GMT

Hi,

I have this scenario:

Amount 1	Type 1	Amount 2	Type 2	Amount 3
1515	R	1555	R	40
1555	R	1584	R	29
1584	R	43	E	43
43	E	82	E	39
1584	R	77	R	77
77	R	114	R	37
114	R	145	R	31

I need to get the values for the "Amount 4" Column:

Amount 1	Type 1	Amount 2	Type 2	Amount 3	Amount 4
1515	R	1555	R	40	0
1555	R	1584	R	29	0
1584	R	43	E	43	0
43	E	82	E	39	0
1584	R	77	R	77	82
77	R	114	R	37	0
114	R	145	R	3	0

The calculation for the Amount 4 column is:

If the type of the Amount 2 is E, Amount 4 is 0.

If the types of the Amount 2 and Amount 1 are R:

> If the type of the previous Amount 2 is R, the value of Amount 4 is 0

> If the type of the previous Amount 2 is E, I have to sum all the previous "Amount 3" values with type E until I find one that is R.

For example, in this case Amount 1 = 1584, Amount 2 = 77, both values have a R-Type. The previous Amount 2 value (82) is E-Type. So, I need to sum the Amount 3 values 39 and 43, the result is 82. Value 29 must not be added because it belongs to an Amount 2 value (1584) with a R-Type.

How can I get the Amount 4 values with this logic in Qlikview? What functions are useful to solve this case? I am new to Qlikview and I am trying to find a solution.

Thanks in advance.

Best Regards,

Lucía

topic Calculations in a table- previous values based on a condition in QlikView

Calculations in a table- previous values based on a condition