ALTER USER
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ALTER USER

ALTER USER — изменить роль в базе данных

Синтаксис

ALTER USER указание_роли [ WITH ] параметр [ ... ]

Здесь параметр:

      SUPERUSER | NOSUPERUSER
    | CREATEDB | NOCREATEDB
    | CREATEROLE | NOCREATEROLE
    | INHERIT | NOINHERIT
    | LOGIN | NOLOGIN
    | REPLICATION | NOREPLICATION
    | BYPASSRLS | NOBYPASSRLS
    | CONNECTION LIMIT предел_подключений
    | [ ENCRYPTED ] PASSWORD 'пароль' | PASSWORD NULL
    | VALID UNTIL 'дата_время'
    | PROFILE имя_профиля
    | ACCOUNT UNLOCK | ACCOUNT LOCK

ALTER USER имя RENAME TO новое_имя

ALTER USER { указание_роли | ALL } [ IN DATABASE имя_бд ] SET параметр_конфигурации { TO | = } { значение | DEFAULT }
ALTER USER { указание_роли | ALL } [ IN DATABASE имя_бд ] SET параметр_конфигурации FROM CURRENT
ALTER USER { указание_роли | ALL } [ IN DATABASE имя_бд ] RESET параметр_конфигурации
ALTER USER { указание_роли | ALL } [ IN DATABASE имя_бд ] RESET ALL

Здесь указание_роли:

    имя_роли
  | CURRENT_ROLE
  | CURRENT_USER
  | SESSION_USER

Описание

Оператор ALTER USER теперь стал синонимом оператора ALTER ROLE.

Совместимость

Оператор ALTER USER является расширением Postgres Pro. В стандарте SQL определение пользователей считается зависимым от реализации.

См. также

ALTER ROLE
Пред. Наверх След.
ALTER TYPE Начало ALTER USER MAPPING
DROP AGGREGATE
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DROP AGGREGATE

DROP AGGREGATE — remove an aggregate function

Synopsis

DROP AGGREGATE [ IF EXISTS ] name ( aggregate_signature ) [, ...] [ CASCADE | RESTRICT ]

where aggregate_signature is:

* |
[ argmode ] [ argname ] argtype [ , ... ] |
[ [ argmode ] [ argname ] argtype [ , ... ] ] ORDER BY [ argmode ] [ argname ] argtype [ , ... ]

Description

DROP AGGREGATE removes an existing aggregate function. To execute this command the current user must be the owner of the aggregate function.

Parameters

IF EXISTS

Do not throw an error if the aggregate does not exist. A notice is issued in this case.

name

The name (optionally schema-qualified) of an existing aggregate function.

argmode

The mode of an argument: IN or VARIADIC. If omitted, the default is IN.

argname

The name of an argument. Note that DROP AGGREGATE does not actually pay any attention to argument names, since only the argument data types are needed to determine the aggregate function's identity.

argtype

An input data type on which the aggregate function operates. To reference a zero-argument aggregate function, write * in place of the list of argument specifications. To reference an ordered-set aggregate function, write ORDER BY between the direct and aggregated argument specifications.

CASCADE

Automatically drop objects that depend on the aggregate function (such as views using it), and in turn all objects that depend on those objects (see Section 5.14).

RESTRICT

Refuse to drop the aggregate function if any objects depend on it. This is the default.

Notes

Alternative syntaxes for referencing ordered-set aggregates are described under ALTER AGGREGATE.

Examples

To remove the aggregate function myavg for type integer: 

DROP AGGREGATE myavg(integer);

To remove the hypothetical-set aggregate function myrank, which takes an arbitrary list of ordering columns and a matching list of direct arguments: 

DROP AGGREGATE myrank(VARIADIC "any" ORDER BY VARIADIC "any");

To remove multiple aggregate functions in one command: 

DROP AGGREGATE myavg(integer), myavg(bigint);

Compatibility

There is no DROP AGGREGATE statement in the SQL standard.

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