AutoField with postgres10/11 as generated identity

[Michael Kany]

We are currently working on a Django / Postgresql 11 project. We needed an adjustment for the postgres module because of its compatibility with .NET Framework and dataset generation.
In postgres 10/11 there is the new feature identity column called GENERATED AS IDENTITY instead of serial.
column_name type GENERATED {ALWAYS | BY DEFAULT} AS IDENTITY [(sequence_option)]
We have created a module based on db.backends.postgres that adds 2 new django model fields. I would like implement the new feature into pyodbc module or new module for postgres 10/11 useful for later versions of django.

Adjustments only in base.py (line 70ff):
data_types = {

'IdentityAutoField': 'integer',
'IdentityBigAutoField': 'bigint',

and schema.py, def column_sql () (line 178ff):
# Primary key / unique outputs

if field.primary_key:

sql + = "PRIMARY KEY"
if field.get_internal_type () in ("IdentityAutoField", "IdentityBigAutoField"):

sql + = "GENERATED ALWAYS AS IDENTITY"

elif field.unique:

sql + = "UNIQUE"

I can also send our code

best regards
Michael Kany