Dynamic concatenation of fields

Hi,

I have an app that lets a user select a list of columns from the data, which will be shown as output.

Suppose there is 10 columns and user selects 3 (A,B,C) from them. Is it possible to create a formula which will concatenate the 3 fields as ABC?

In case someone selects A,B,C and D, the concatenation field should have ABCD values. All fields are strings.

In short-How can i create a concatenation field that will dynamically concatenate the user selected fields?

Thanks,

Bharath

Transformation

Preparation

Accepted answers

jdunkerley79

Try the following:

Add a record ID
Use a Transpose tool to rotate from columns to row based
You can then use a summarize to concatenate
Finally join back on record ID to get the result

Simple sample attached.

Dynamic Concatenate.yxmd

All comments

JohnJPS

I've created a simple macro that will do this inline; hopefully it should be straigthforward for you to pursue the same concept in your Analytic App. Basically, I have a List Box of checkboxes attached to the Macro Input, which generates a custom list of ToString([f1])+ToString([f2]) for whatever fields are checked. My action then replaces the expression in a Formula Tool with exactly that custom list.