Questions tagged [groupby]
A groupby operation: splits the data, applies a function to each group, and combines the results.
2
questions
1
vote
0answers
15 views
Pushing down Group By clause [closed]
I've studied this exercise in class
But I cannot figure out why, when I push down the Group By clause, I can remove RLCode attribute from GroupBy. Does this action change the meaning of query tree?
0
votes
1answer
43 views
Problem with sort by and group by in pandas
I have a DataFrame with duplicate id's but have different dates.
For Example:
...
