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The DROP USER statement removes one or more SQL users.
Note:
Since the keywords ROLE and USER can now be used interchangeably in SQL statements for enhanced Postgres compatibility, DROP USER is now an alias for DROP ROLE.
Consideration
Users that own objects (such as databases, tables, schemas, and types) cannot be dropped until the ownership is transferred to another user.
Required privileges
Non-admin users cannot drop admin users. To drop non-admin users, the user must be a member of the admin role or have the CREATEROLE parameter set.
Synopsis
## Parameters
Parameter | Description
-----------|-------------
`user_name` | The username of the user to remove. To remove multiple users, use a comma-separate list of usernames.
You can use [`SHOW USERS`](show-users.html) to find usernames. ## Example All of a user's privileges must be revoked before the user can be dropped. In this example, first check a user's privileges. Then, revoke the user's privileges before removing the user.
> SHOW GRANTS ON test.customers FOR mroach;
+-----------+--------+------------+
| Table | User | Privileges |
+-----------+--------+------------+
| customers | mroach | CREATE |
| customers | mroach | INSERT |
| customers | mroach | UPDATE |
+-----------+--------+------------+
(3 rows)
> REVOKE CREATE,INSERT,UPDATE ON test.customers FROM mroach;
> DROP USER mroach;
See also
CREATE USERALTER USERSHOW USERSGRANTSHOW GRANTS- Create Security Certificates
- Other SQL Statements
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