`data.postgresql_sequences` does not show column identity sequences

[TPXP]

Hi there,

Thank you for opening an issue. Please provide the following information:

Terraform Version

• Terraform v1.6.3
• terragrunt version v0.53.3

Affected Resource(s)

Please list the resources as a list, for example:

• postgresql_sequences

Terraform Configuration Files

data "postgresql_sequences" "db_sequences" {
  database = "test"
}

Debug Output

I don't have one, please ask if you think it's needed. 🙏

Panic Output

None, terraform/terragrunt completes successfully

Expected Behavior

I'm using identity columns for some tables in my PostgreSQL database. The postgresql_sequences data source does not show them

terraform console
> data.postgresql_sequences.db_sequences
{
    "database" = "test"
    "id" = "test_ANY (array[])_ANY (array[])_ALL (array[])_ALL (array[])_"
    "like_all_patterns" = tolist(null) /* of string */
    "like_any_patterns" = tolist(null) /* of string */
    "not_like_all_patterns" = tolist(null) /* of string */
    "regex_pattern" = tostring(null)
    "schemas" = tolist(null) /* of string */
    "sequences" = tolist([])
}

data.postgresql_sequences.db_sequences.sequences is an empty list [], while in psql, \ds shows the identity column sequences (also, I'm able to grant privileges on them, so it makes sense to output them).

psql
xtz=> \ds
                            Liste des relations
 Schéma |               Nom                |   Type   |    Propriétaire
--------+----------------------------------+----------+--------------------
 public | test_id_seq        | séquence | test

Steps to Reproduce

Please list the steps required to reproduce the issue, for example:

1. Create a table with an identity column

CREATE TABLE IF NOT EXISTS test (
     id                    integer   generated by default as identity,
     value TEXT,
);

Important Factoids

My database is running on AWS RDS Aurora, but I don't think this changes much.

References

None that i'm aware of

Other notes

The column identity sequences don't appear in select * from information_schema.sequences;, but one can fetch from the column database by asking for colums which have is_identity set to YES. Then, the sequence name can be found with pg_get_serial_sequence:

select pg_get_serial_sequence(table_name, column_name) from information_schema.columns where is_identity = 'YES';
         pg_get_serial_sequence
-----------------------------------------
 public.test_id_seq

Credits: https://dba.stackexchange.com/questions/187708/how-to-get-information-about-the-sequence-behind-the-new-identity-column-in-post