Presto equivalent of MySQL group_concat

Question

I\'m new to Presto and looking to get the same functionality as the group_concat function in MySQL. Are the following two equivalent? If not, any suggestions for how I can r

Answer 1

Try using this in place of group_concat in Presto ::

select 
  a,
  array_join(array_agg(b), ',')
from table
group by a