I'm looking out for a system catalog query to select the primary key column
name for a specific table. With the following query I only get the name of
the primary key itself. How do I get the primary key column name???

select pg_constraint.*,pg_index.indisprimary
from pg_constraint,pg_namespace, pg_class, pg_index
where pg_namespace.nspname='public'
  and pg_namespace.oid=c.connamespace
  and pg_class.relname='new_layer'
  and pg_class.oid=c.conrelid
  and pg_class.oid=pg_index.indrelid
  and c.contype='p'

I'll appeciate any help.

with best regards

Dr. Horst Düster 

Kanton Solothurn 
Amt für Geoinformation
Abteilung SO!GIS Koordination
Rötistrasse 4
CH-4501 Solothurn 

Tel.: ++41 (0)32 627 25 32 
Fax: ++41 (0)32 627 22 14

[EMAIL PROTECTED] 
www.sogis.so.ch


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