ALTER ROLE

Function

ALTER ROLE modifies role attributes.

Precautions

None

Syntax

• Modify the permissions of a role.

  AlterRole ::= ALTER ROLE role_name [ [ WITH ] option [ ... ] ];

  The option clause for granting permissions is as follows:

  option ::= {CREATEDB | NOCREATEDB}
      | {CREATEROLE | NOCREATEROLE}
      | {INHERIT | NOINHERIT}
      | {AUDITADMIN | NOAUDITADMIN}
      | {SYSADMIN | NOSYSADMIN}
      | {USEFT | NOUSEFT}
      | {LOGIN | NOLOGIN}
      | {REPLICATION | NOREPLICATION}
      | {INDEPENDENT | NOINDEPENDENT}
      | {VCADMIN | NOVCADMIN}
      | CONNECTION LIMIT connlimit
      | [ ENCRYPTED | UNENCRYPTED ] PASSWORD 'password' [EXPIRED]
      | [ ENCRYPTED | UNENCRYPTED ] IDENTIFIED BY 'password' [ REPLACE 'old_password' | EXPIRED ]
      | [ ENCRYPTED | UNENCRYPTED ] PASSWORD { 'password' | DISABLE | EXPIRED }
      | [ ENCRYPTED | UNENCRYPTED ] IDENTIFIED BY { 'password' [ REPLACE 'old_password' ] | DISABLE }
      | VALID BEGIN 'timestamp'
      | VALID UNTIL 'timestamp'
      | RESOURCE POOL 'respool'
      | PERM SPACE 'spacelimit'
      | ACCOUNT { LOCK | UNLOCK }
      | PGUSER

• Rename a role.

  AlterRole ::= ALTER ROLE role_name
      RENAME TO new_name;

• Set parameters for a role.

  AlterRole ::= ALTER ROLE role_name [ IN DATABASE database_name ]
      SET configuration_parameter {{ TO | = } { value | DEFAULT } | FROM CURRENT};

• Reset parameters for a role.

  AlterRole ::= ALTER ROLE role_name
      [ IN DATABASE database_name ] RESET {configuration_parameter|ALL};

Parameter Description

• role_name

  Specifies a role name.

  Value range: an existing username

• IN DATABASE database_name

  Modifies the parameters of a role in a specified database.

• SET configuration_parameter

  Sets parameters for a role. Session parameters modified by ALTER ROLE apply to a specified role and take effect in the next session triggered by the role.

  Value range:

  For details about the values of configuration_parameter and value, see SET.

  DEFAULT: clears the value of configuration_parameter. configuration_parameter will inherit the default value of the new session generated for the role.

  FROM CURRENT: uses the value of configuration_parameter of the current session.

• RESET configuration_parameter/ALL

  Clears the value of configuration_parameter. The statement has the same effect as that of SET configuration_parameter TO DEFAULT.

  Value range: ALL indicates that the values of all parameters are cleared.

• ACCOUNT LOCK | ACCOUNT UNLOCK

  • ACCOUNT LOCK: locks an account to forbid login to databases.
  • ACCOUNT UNLOCK: unlocks an account to allow login to databases.

• PGUSER

  In the current version, the PGUSER attribute of a role cannot be modified.

For details about other parameters, see Parameter Description in CREATE ROLE.

Example

See Example in CREATE ROLE.

Helpful Links

CREATE ROLE，DROP ROLE，SET