If I have the following table (shown in the image below), how can I write a grouped query that would concatenate the grouped results?
![InputTable](https://i.stack.imgur.com/FwYeH.png)
For this example, I'd want to group by the LetterColumn
and concatenate the NumberColumn
So the desired results would be:
![ResultsTable](https://i.stack.imgur.com/0rQwR.png)
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