I have a query which outputs something like this:

+-------+----+--------------+
| F_KEY | EV | OTHER_COLUMN |
+-------+----+--------------+
| 100   | 1  | ...          |
| 100   | 2  | ...          |
| 150   | 2  | ...          |
| 100   | 3  | ...          |
| 150   | 4  | ...          |
+-------+----+--------------+

I'm sure that I've seen an aggregation function which turns it (using GROUP BY F_KEY) into something like this:

+-------+------------+--------------+
| F_KEY | ?          | OTHER_COLUMN |
+-------+------------+--------------+
| 100   | (1, 2, 3)  | ...          |
| 150   | (2, 4)     | ...          |
+-------+------------+--------------+

Means, it somehow "implodes" the values of EV together into one single field. How can I do this? Unfortunately, I don't remember the function's name.

I'm using SQL Server.

This is a simplification of my query:

SELECT
    F_KEY,
    EV,
    OTHER_COLUMN
FROM
    TABLE1
JOIN
    TABLE2 ON F_KEY = TABLE2.ID
WHERE
    EVENT_TIME BETWEEN '2011-01-01 00:00:00.000' AND '2011-12-31 23:59:59.999'
ORDER BY
    EVENT_TIME ASC

Any idea is appreciated!

sql-server t-sql concatenation
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