>
>SELECT c1.relname,c2.relname from pg_constraint cons,pg_class c1, 
pg_class
>c2 where cons.conrelid=c1.oid and cons.confrelid = c2.oid;
>
>for column(s) names you will have to do extra homework.

Thanks!   I have obtained my query! Here is:

SELECT 
  (SELECT relname FROM pg_catalog.pg_class WHERE oid=conrelid) AS 
fromTbl,
  (SELECT relname FROM pg_catalog.pg_class WHERE oid=confrelid) AS 
toTbl,
  (SELECT attname FROM pg_catalog.pg_attribute WHERE attrelid=conrelid 
AND conkey[1]=attnum) AS viaCol
FROM pg_catalog.pg_constraint AS rel WHERE contype='f';

TIA
Roberto Colmegna



                
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