ALTER MATERIALIZED VIEW#
Примечание
Ниже приведена оригинальная документация Trino. Скоро мы ее переведем на русский язык и дополним полезными примерами.
Синтаксис#
ALTER MATERIALIZED VIEW [ IF EXISTS ] name RENAME TO new_name
ALTER MATERIALIZED VIEW name SET PROPERTIES property_name = expression [, ...]
Описание#
Change the name of an existing materialized view.
The optional IF EXISTS clause causes the error to be suppressed if the
materialized view does not exist. The error is not suppressed if the
materialized view does not exist, but a table or view with the given name
exists.
SET PROPERTIES#
The ALTER MATERIALIZED VIEW SET PROPERTIES statement followed by some number
of property_name and expression pairs applies the specified properties
and values to a materialized view. Ommitting an already-set property from this
statement leaves that property unchanged in the materialized view.
A property in a SET PROPERTIES statement can be set to DEFAULT, which
reverts its value back to the default in that materialized view.
Support for ALTER MATERIALIZED VIEW SET PROPERTIES varies between
connectors. Refer to the connector documentation for more details.
Примеры#
Rename materialized view people to users in the current schema:
ALTER MATERIALIZED VIEW people RENAME TO users;
Rename materialized view people to users, if materialized view
people exists in the current catalog and schema:
ALTER MATERIALIZED VIEW IF EXISTS people RENAME TO users;
Set view properties (x = y) in materialized view people:
ALTER MATERIALIZED VIEW people SET PROPERTIES x = 'y';
Set multiple view properties (foo = 123 and foo bar = 456) in
materialized view people:
ALTER MATERIALIZED VIEW people SET PROPERTIES foo = 123, "foo bar" = 456;
Set view property x to its default value in materialized view people:
ALTER MATERIALIZED VIEW people SET PROPERTIES x = DEFAULT;