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Description
Creates a list of all unique non-null values seen in a group (currently, max. 1000 values are collected). The order of elements isn't stable when running on a cluster, because the elements for each group might be collected on different nodes. If the element order matters, provide an order by expression as a second (optional) argument. This could, for example, be a timestamp or ID column in your data set.
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| Key | Value | Time_Stamp |
|---|---|---|
| group1 | a | 1 |
| group1 | b | 4 |
| group1 | c | 3 |
| group1 | d | 2 |
| group2 | a | 4 |
| group2 | b | 3 |
| group2 | c | 2 |
| group2 | d | 1 |
First, create a group, e.g. GROUPBY(#RawData!Key)
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