Using PostgreSQL Aggregate ORDER BY with sqlalchemy

Question

I have a query which uses PostgreSQL\'s syntax for using ORDER BY in an aggregate function, something like this:

SELECT some_agg_func(a ORDER BY b DESC) FROM         


        

Answer 1

From the SQLAlchemy Docs:

from sqlalchemy.dialects.postgresql import aggregate_order_by

expr = func.array_agg(aggregate_order_by(table.c.a, table.c.b.desc()))
stmt = select([expr])