How to dynamically map input columns to output columns

sam2000 — Sat, 16 Nov 2024 03:36:47 GMT

Hello,

As shown in image below, here is my input excel.I want output as below:

Here is my tMap:

From the input excel, depending on the current quarter, I want to choose 3 columns. In the example given, I have shown I want to choose Apr, Mar, Jun i.e. Q2. However, in case of Q3, I need to choose Jul, Aug, Sep. Let's assume, I have 3 context variables that hold the month name depending on quarter.

context.month1="Apr-2019"

context.month2="May-2019"

context.month3="Jun-2019"

So, for this example, I want below mapping in tMap, as the three context variables contains those months:

C4 --> M1

C5 --> M2

C6 --> M3

However, this has to be dynamic; In the next quarter, it will be other set of 3 columns i.e. C7, C8, C9

Essentially, I want to remove those columns that are not required for current quarter.

I am using Talend Open Studio 7.2.1. Cannot use licensed version.

Any ideas appreciated. Thanks.

Re: How to dynamically map input columns to output columns

Anonymous — Mon, 13 Jan 2020 16:15:21 GMT

Hi,

Below blog describes about dynamic processing of data. It is not exactly same use case but it can give you an overall idea.

https://www.talend.com/blog/2019/10/31/magically-shuffle-columns-talend-dynamic-schema/

Warm Regards,
Nikhil Thampi

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topic How to dynamically map input columns to output columns in Talend Studio

How to dynamically map input columns to output columns

Re: How to dynamically map input columns to output columns