Re:

David,

On Sun, May 7, 2017 at 8:57 AM, David Rowley
<david(dot)rowley(at)2ndquadrant(dot)com> wrote:
> On 8 May 2017 at 00:42, Igor Korot <ikorot01(at)gmail(dot)com> wrote:
>> Basically what I'd like to see is the definition of each column and
>> whether this column is
>> part of primary/foreign key or not.
>
> information_schema.table_constraints is of no use to you then. There
> are no details about which column(s) the constraint applies to.
>
> Likely you'll want to look at pg_constraint for contype in('p','f')
> and unnest(conkey) and join that to information_schema.columns. You
> may also need to think about pg_constraint.confkey, depending on if
> you want to know if the column is referencing or referenced in a
> foreign key constraint.

I checked pg_constraint view, but I didn't see anything to join to.
I do see a table name, but no schema or column name.

Any idea on the query syntax?

Thank you.

>
>
>
> --
> David Rowley http://www.2ndQuadrant.com/
> PostgreSQL Development, 24x7 Support, Training & Services