Categories:

User & Security DDL (Roles)

ALTER ROLE

Modifies the properties for an existing role. Currently, the only supported operations are renaming a role or adding/overwriting/removing a comment for a role.

See also:

CREATE ROLE , SHOW ROLES

Syntax

ALTER ROLE [ IF EXISTS ] <name> RENAME TO <new_name>

ALTER ROLE [ IF EXISTS ] <name> SET COMMENT = '<string_literal>'

ALTER ROLE [ IF EXISTS ] <name> UNSET COMMENT

Parameters

name

Specifies the identifier for the role to alter. If the identifier contains spaces or special characters, the entire string must be enclosed in double quotes. Identifiers enclosed in double quotes are also case-sensitive.

RENAME TO new_name

Specifies the new identifier for the role; must be unique for your account.

For more details, see Identifier Requirements.

SET ...

Specifies the properties to set for the role:

COMMENT = 'string_literal'

Adds a comment or overwrites an existing comment for the role.

UNSET ...

Specifies the properties to unset for the role, which resets them to the defaults.

Currently, the only property you can unset is COMMENT, which removes the comment, if one exists, for the role.

Usage Notes

• Only the role owner (i.e. the role with the OWNERSHIP privilege on the role), or a higher role, can execute this command.

• To rename a role (using the RENAME TO new_name parameter) the role that executes this command must also have the global CREATE ROLE privilege.

Examples

Rename role role1 to role2:

ALTER ROLE role1 RENAME TO role2;

Add a comment for role myrole:

ALTER ROLE myrole SET COMMENT = 'New comment for role';