Hoe krijg ik een primaire sleutelkolom in Oracle?

SELECT cols.table_name, cols.column_name, cols.position, cons.status, cons.owner
FROM all_constraints cons, all_cons_columns cols
WHERE cols.table_name = 'TABLE_NAME'
AND cons.constraint_type = 'P'
AND cons.constraint_name = cols.constraint_name
AND cons.owner = cols.owner
ORDER BY cols.table_name, cols.position;

Zorg ervoor dat 'TABLE_NAME' in hoofdletters is, aangezien Oracle tabelnamen in hoofdletters opslaat.