>serial is not an actual data type -- it is essentially an integer with a 
>default and an automatically created sequence. See:
>>
>>https://www.postgresql.org/docs/13/datatype-numeric.html#DATATYPE-SERIA
>>L
>
>Yes, I undersand that serial is just a hint at table creation time, but is 
>there a place in catalog where we can see if the table was created using 
>'serial' ?
>if yes, I'm looking for a way to remove that.
>
>Another cause for my problem may be in the way how the default value 
>information is stored in pg_attrdef.
>The difference we see between the source and target database is that a schema 
>prefix is displayed with the sequence on one side, and not on the other..
>I'm not sure yet if this really come directly from the catalog or from the way 
>how the client read the table definition, maybe along with some search_path 
>differences Were there any change in this area between PG 9.6 and PG 11 ?
>
>example:
>
>The Default value of column 'id' in table 'db_jobs_history' in database 
>'oms_db' is different on source and target servers. 
>It's 'nextval('admin.db_jobs_history_id_seq'::regclass)' on source  and 
>'nextval('db_jobs_history_id_seq'::regclass)' on target.

I've probably found the origin of our problem:

https://www.postgresql.org/docs/9.3/release-8-1.html
 => Add proper dependencies for arguments of sequence functions (Tom)
 
But I won't be able to check that in the next few days..

best regards,
marc Mamin

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