Please answer the questions about database data transfer

It is no problem to get such query effect through aggregation function , I want to save this query effect to a new table , But at the moment user_id Yes 1000+,, A total of 2w+, Tried to write for loop , Less data , You can successfully save , But the amount of data is too large , Can't save the past , There is a problem with the data , inaccurate . Please point out the engineers of the whole stack , Kneeling crab