I want to group the values by account and get summed rows but only where account is the same. I want a scalable version of it which can do this over 10,000 rows
What I have right now:
account 1 2
a 100 30
a 20 40
c 30 30
c 40 20
What I want:
account 1 2
a 120 70
b 70 50