MaxCompute - Supports Input Presorting for Some Aggregate Functions in MaxCompute SQL
Jul 30 2021
MaxComputeContent
Target customers: developers and analysts. Features released: In MaxCompute SQL, when you use the aggregate function WM_CONCAT or COLLECT_LIST or a UDAF that is sensitive to the input order, you can use the WITHIN GROUP (ORDER BY col1[, col2...]) clause to specify the columns by which you want to sort input. In this case, the input of the aggregate function is sorted.