Concatenating Unique and Nonmissing Data

[#1]

I have a data table describing the tool history for a series of semiconductor lots.  In some instances, the lots can split and be run across different tools for the same processing step.  In such case, I would like to create a column with each tool concatenated to indicate that > 1 tool was involved.  With a lot of help, I have gotten to the point where I can identify the lots, steps and substeps where > 1 tool was used.  I can transpose the data to get to the tools being nominated in columns but it's still clumsy.  Can I somehow concatenate that to get the unique tools listed.  I also looked at Split but all of the options are not reflected.

[#2]

Here is a formula that will work to create your Desired Result column

As Constant( dt = Current Data Table() );
Concat Items( Associative Array( dt[Row(), 0] ) << get keys, "/" );

[#3]

txnelson

This is a huge step forward.  Is there an easy way to dodge the first 4 columns from the equation?  Columns 5 onwards have the relevant data.

[#4 · Accepted solution]

Here is one way to do it

As Constant(
	dt = Current Data Table();
	start = 5;
	stop = N Cols( dt );
);
Concat Items( Associative Array( dt[Row(), Index( start, stop )] ) << get keys, "/" );

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