An example of the operation on the server is shown below.

1. Confirm information about a masking target where a masking policy is set
   Refer to the pgx_confidential_columns table to confirm the masking target where the masking policy is set.

   postgres=# select * from pgx_confidential_columns;
    schema_name | table_name | policy_name | column_name | function_type |          function_parameters           | regexp_pattern | regexp_replacement | regexp_flags | column_description 
   -------------+------------+-------------+-------------+---------------+----------------------------------------+----------------+--------------------+-------------+--------------------
    public      | t1         | p1          | c1          | FULL          |                                        |                |                    |             | 
    public      | t1         | p1          | c2          | PARTIAL       | VVVFVVVVFVVVV, VVV-VVVV-VVVV, *, 4, 11 |                |                    |             | 
   (2 row)

2. Confirm information about the masking policy content
   Refer to pgx_confidential_policies to confirm the masking policy content.

   postgres=# select * from pgx_confidential_policies;
    schema_name | table_name | policy_name | expression | enable | policy_description 
   -------------+------------+-------------+------------+--------+--------------------
    public      | t1         | p1          | 1=1        | t      | 
   (1 row)