Inverse grouping

Task:List the details of installment loan: current paym […]

Log processing 3

Task:Each piece of log has indefinite rows, and a fixed […]

Log processing 2

Task:Each piece of log has indefinite rows, and each ro […]

Log processing 1

Task:Every three rows of records are a piece of log. Or […]

Repeated conditional grouping

Task:Divide employees into groups by segmentation accor […]

Group by specified order

Task:List in order the number and average age of female […]

Adjacent records grouping with the original order

Task:List the team information with the most consecutiv […]

Sort grouped results

Task:Find out the two departments with the largest numb […]

Grouped subsets operations

Task:Calculate the daily inventory status of various go […]

Grouped subsets iteration loop

Task:Calculate how many months it takes for each sales […]