Reviewing Sequence Definitions in your Table Meta-data
If you query the table meta-data before performing a sequence conversion with the \d+ orders command, the PostgreSQL sequence is defined in the Default column:
acctg=# \d+ orders;
Table "public.orders"
Column | Type | Collation | Nullable | Default | Storage | Compression | Stats target | Description
----------+-------------------+-----------+----------+------------------------------------+----------+-------------+--------------+-------------
customer | character varying | | | | extended | | |
invoice | character varying | | | | extended | | |
id | bigint | | not null | nextval('orders_id_seq'::regclass) | plain | | |
Indexes:
"orders_pkey" PRIMARY KEY, btree (id)
Access method: heap
After performing a conversion, the \d+ table_name command shows a Default value of snowflake.nextval('orders_id_seq'::regclass):
acctg=# \d+ orders
Table "public.orders"
Column | Type | Collation | Nullable | Default | Storage | Compression | Stats target | Descripti
on
----------+-------------------+-----------+----------+----------------------------------------------+----------+-------------+--------------+----------
---
customer | character varying | | | | extended | | |
invoice | character varying | | | | extended | | |
id | bigint | | not null | snowflake.nextval('orders_id_seq'::regclass) | plain | | |
Indexes:
"orders_pkey" PRIMARY KEY, btree (id)
Access method: heap