Existuje v SQLAlchemy ekvivalent LISTAGG WITHIN GROUP?

Počínaje verze 1.1 můžete použít FunctionElement.within_group(*order_by) :

In [7]: func.listagg(column('person'), ',').within_group(column('person'))
Out[7]: <sqlalchemy.sql.elements.WithinGroup object at 0x7f2870c83080>

In [8]: print(_.compile(dialect=oracle.dialect()))
listagg(person, :listagg_1) WITHIN GROUP (ORDER BY person)