Combine stage

[vishal_rastogi]

HI All,

please share how to use the combine stage for the below scnenairo

source :
id | column
1|10
1|20
1|30
2|10
2|50
3 |10
4|20

target
1|10,20,30
2|10,50
3|10
4|20

[singhald]

this is called vertical pioveting, can be done by using two sort stages and 1 transformer stage

1st sort stage - sort the databased on key column and enable key change column

2nd sort stage - use 'dont sort previosuly sorted' data on key column and sort key change field in ascending order.

3rd transformer stage - Use # stage variables ( no if variable should be same as no of max values you can have for 1 keys) and one stage variable to hold key change. one stage variable to hold counter for example

svCount initilize with zero = if svPreKeychange = 1 then 0 else svCount+1
svField1 = if svCount =0 then inputCol else ' '
svField2 = if svCount =1 Then inputCol Else ' '
svField3 = If svCount=3 Then inputCol Else ' '
....

...

svPreKeychange (initialize with zero) = KeyChange

after this you can use these stage variable values to assign to columns

try with this , may be in some place you need to tweek this solution.

[vishal_rastogi]

thanks deepak

but i am looking for this output through combine stage

[ray.wurlod]

Can you be more specific about which stage type you are referring to?

Then read the chapter on this stage in the manual, and report back to us what it does, and why you believe it should be able to perform a vertical pivot.