Hello,

I just noticed that Postgres allows the following syntax:

create table foo
(
    id integer constraint id_default_value default 42
);

But as far as I can tell the "constraint id_default_value" part seems to be 
only syntactical sugar as this is stored nowhere. At least I couldn't find it going 
through the catalog tables and neither pg_dump -s or pgAdmin are showing that name in the 
generated SQL source for the table.

It's not important, I'm just curious why the syntax is accepted (I never saw a 
default value as a constraint) and if there is a way to retrieve that 
information once the table is created.

Thanks
Thomas


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