Vertica Analytics Platform Version 9.2.x Documentation

Changing Table Ownership

As a superuser or table owner, you can reassign table ownership with ALTER TABLE…OWNER TO, as follows:

ALTER TABLE [schema.]table-name OWNER TO owner-name

Changing table ownership is useful when moving a table from one schema to another. Ownership reassignment is also useful when a table owner leaves the company or changes job responsibilities. Because you can change the table owner, the tables won't have to be completely rewritten, you can avoid loss in productivity.

Changing table ownership automatically causes the following changes:

  • Grants on the table that were made by the original owner are dropped and all existing privileges on the table are revoked from the previous owner. Changes in table ownership has no effect on schema privileges.
  • Ownership of dependent IDENTITY/AUTO-INCREMENT sequences are transferred with the table. However, ownership does not change for named sequences created with CREATE SEQUENCE. To transfer ownership of these sequences, use ALTER SEQUENCE.
  • New table ownership is propagated to its projections.

Example

In this example, user Bob connects to the database, looks up the tables, and transfers ownership of table t33 from himself to user Alice.

=> \c - Bob
You are now connected as user "Bob".
=> \d
 Schema |  Name  | Kind  |  Owner  | Comment
--------+--------+-------+---------+---------
 public | applog | table | dbadmin |
 public | t33    | table | Bob     |
(2 rows)
=> ALTER TABLE t33 OWNER TO Alice;
ALTER TABLE

When Bob looks up database tables again, he no longer sees table t33:

=> \d                List of tables
               List of tables
 Schema |  Name  | Kind  |  Owner  | Comment
--------+--------+-------+---------+---------
 public | applog | table | dbadmin |
(1 row)

When user Alice connects to the database and looks up tables, she sees she is the owner of table t33.

=> \c - Alice
You are now connected as user "Alice".
=> \d
             List of tables
 Schema | Name | Kind  | Owner | Comment
--------+------+-------+-------+---------
 public | t33  | table | Alice |
(2 rows)

Alice or a superuser can transfer table ownership back to Bob. In the following case a superuser performs the transfer.

=> \c - dbadmin
You are now connected as user "dbadmin".
=> ALTER TABLE t33 OWNER TO Bob;
ALTER TABLE
=> \d
                List of tables
 Schema |   Name   | Kind  |  Owner  | Comment
--------+----------+-------+---------+---------
 public | applog   | table | dbadmin |
 public | comments | table | dbadmin |
 public | t33      | table | Bob     |
 s1     | t1       | table | User1   |
(4 rows)

You can also query system table V_CATALOG.TABLES to view table and owner information. Note that a change in ownership does not change the table ID.

In the below series of commands, the superuser changes table ownership back to Alice and queries the TABLES system table.

=> ALTER TABLE t33 OWNER TO Alice;
ALTER TABLE
=> SELECT table_schema_id, table_schema, table_id, table_name, owner_id, owner_name FROM tables;
  table_schema_id  | table_schema |     table_id      | table_name |     owner_id      | owner_name
-------------------+--------------+-------------------+------------+-------------------+------------
 45035996273704968 | public       | 45035996273713634 | applog     | 45035996273704962 | dbadmin
 45035996273704968 | public       | 45035996273724496 | comments   | 45035996273704962 | dbadmin
 45035996273730528 | s1           | 45035996273730548 | t1         | 45035996273730516 | User1
 45035996273704968 | public       | 45035996273795846 | t33        | 45035996273724576 | Alice
(5 rows)

Now the superuser changes table ownership back to Bob and queries the TABLES table again. Nothing changes but the owner_name row, from Alice to Bob.

=> ALTER TABLE t33 OWNER TO Bob;
ALTER TABLE
=> SELECT table_schema_id, table_schema, table_id, table_name, owner_id, owner_name FROM tables;
  table_schema_id  | table_schema |     table_id      | table_name |     owner_id      | owner_name
-------------------+--------------+-------------------+------------+-------------------+------------
 45035996273704968 | public       | 45035996273713634 | applog     | 45035996273704962 | dbadmin
 45035996273704968 | public       | 45035996273724496 | comments   | 45035996273704962 | dbadmin
 45035996273730528 | s1           | 45035996273730548 | t1         | 45035996273730516 | User1
 45035996273704968 | public       | 45035996273793876 | foo        | 45035996273724576 | Alice
 45035996273704968 | public       | 45035996273795846 | t33        | 45035996273714428 | Bob
(5 rows)