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Fanfan_Liu
New Member

Operand data type NULL is invalid for sum operator

Hi everyone,

 

I'm running into a power bi dataflow refresh issue: Operand data type NULL is invalid for sum operator.

i think this issue may link to a groupby step in the flow for several decimal columns with null values included. 

it looks fine when i finish the groupby and save the flow. but such error blocks me from refrehsing the dataflow.

Could you pls help advise the real reason? thank you.

1 REPLY 1
Ahmedx
Super User
Super User

in power query change null to 0

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