How to achieve SELECT DISTINCT field .....

Model
class Transactions(Model):
id = fields.CharField(65, pk=True, null=False)
confirmation = fields.IntField(pk=False, max_length=1, default=0, null=False)
confirmed_hash = fields.CharField(65, null=False)

Dataset:
id - confirmation - confirmed_hash
1 - 0 - aaaaaaaaaaaaaaaaaaaa
2 - 1 - aaaaaaaaaaaaaaaaaaaa
3 - 1 - bbbbbbbbbbbbbbbbbb
4 - 0 - aaaaaaaaaaaaaaaaaaaa
5 - 0 - cccccccccccccccccccc
6 - 0 - cccccccccccccccccccc
7 - 1 - aaaaaaaaaaaaaaaaaaaa

From this dataset I want to return only the DISTINCT 'confirmed_hash' rows.
I would expect to do this like this:

Transactions.all().distinct('confirmed_hash')

to produce SQL along the lines of

"SELECT DISTINCT confirmed_hash FROM Transactions....."

Which would return:

[
'aaaaaaaaaaaaaaaaaaaa',
bbbbbbbbbbbbbbbbbb',
'cccccccccccccccccccc'
]

Can anyone clarify how to achieve this with Tortoise?
Thanks

The issue names the Transactions model and the QuerySet distinct operation, but no source files or tests. Start by tracing the Tortoise query API for distinct field selection and compare its generated SQL with the requested confirmed_hash-only result. Done means the documented or implemented query returns one value for each distinct confirmed_hash.