Problem description & analysis:

There is a data table:

Task: Now we want to concatenate the ID numbers for each group of names by | to form a string, and put the result in column C (to calculate in cell C1).

Solution:

Use SPL XLL and enter the following code:

=spl("=E(?1).new(cum(~~+""|""+ID;Name):IDs)",A1:B13)
The results are shown below:

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✨Plugin Installation Method: SPL XLL Installation and Configuration

✨References to other rich Excel operation cases: Desktop and Excel Data Processing Cases

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