Retrieve primary key information with the following SQL statement:
select
all_cons_columns.owner as schema_name,
all_cons_columns.table_name,
all_cons_columns.column_name,
all_cons_columns.position,
all_constraints.status
from all_constraints, all_cons_columns
where
all_constraints.constraint_type = 'P'
and all_constraints.constraint_name = all_cons_columns.constraint_name
and all_constraints.owner = all_cons_columns.owner
order by
all_cons_columns.owner,
all_cons_columns.table_name,
all_cons_columns.position;
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