Duplicate entry for key 'group_key'

Question

I\'m running a query in MySQL where I\'m grouping by four columns and selecting a lot of things, including the four values I\'m grouping by. But I get this error when I run

Answer 1

You should put the aliases in the group buy like this:

Create table table2 as
Select round(x, 0) as x, round(a, 0) as a, round(b, 0) as b, c, d, e, f
from table1
group by x, a, b, c;