How to declare ORM class with index that in postgress is created with GREATEST

[Yoav Kopfstein]

Hi,
I would like to declare an index in orm class with sqlalchemy 1.4
The index is created in postgres with this command:

create index index_name
    on table_name (GREATEST(field_1, field_2));

how can I do it?     (with __table_args__ or without )

thanks

[Cameron Simpson]

Do you have the rest of your table definiton to hand for comparison?

Have you see this example in the core docs:
https://docs.sqlalchemy.org/en/14/core/constraints.html#indexes

Cheers,
Cameron Simpson <c...@cskk.id.au>