How could I order by sum, within a DataFrame in PySpark?

Question

Analogously to:

order_items.groupBy(\"order_item_order_id\").count().orderBy(desc(\"count\")).show()

I have tried:

order_it         


        

Answer 1

You should use aliases for your columns:

import pyspark.sql.functions as func

order_items.groupBy("order_item_order_id")\
           .agg(func.sum("order_item_subtotal")\
                .alias("sum_column_name"))\
           .orderBy("sum_column_name")