GROUP BY - do not group NULL

Question

I\'m trying to figure out a way to return results by using the group by function.

GROUP BY is working as expected, but my question is: Is it possible to have group b

Answer 1

Perhaps you should add something to the null columns to make them unique and group on that? I was looking for some sort of sequence to use instead of UUID() but this might work just as well.

SELECT `table1`.*, 
    IFNULL(ancestor,UUID()) as unq_ancestor
    GROUP_CONCAT(id SEPARATOR ',') AS `children_ids`
FROM `table1` 
WHERE (enabled = 1) 
GROUP BY unq_ancestor