select query into list on one column

Question

I am trying to select all id into one column and delimit it with a comma ,

My DATA column:

+---+--------+--------------+
|id |somedata|someother data|
+---+--------+--------------+
|1  |data1   |other1        |
+---+--------+--------------+
|2  |data2   |other2        |
+---+--------+--------------+
|3  |data3   |other3        |
+---+--------+--------------+

The result I am trying to make:

+-------+
|id list|
+-------+
|1, 2, 3|
+-------+

The result should be a list of ID's in 1 column named 'id list'.

The question is, is this possible? and how? I tried searching for the keywords sql query select into list and other keywords but with no luck.

---

But this query is on a nested select.

Answer 1

Use GROUP_CONCAT():

SELECT GROUP_CONCAT(id) AS idList FROM tableA