REFRESH MATERIALIZED VIEW
7
SQL - Language Statements
REFRESH MATERIALIZED VIEW
replace the contents of a materialized view
REFRESH MATERIALIZED VIEW
REFRESH MATERIALIZED VIEW name
[ WITH [ NO ] DATA ]
Description
REFRESH MATERIALIZED VIEW completely replaces the
contents of a materialized view. The old contents are discarded. If
WITH DATA is specified (or defaults) the backing query
is executed to provide the new data, and the materialized view is left in a
scannable state. If WITH NO DATA is specified no new
data is generated and the materialized view is left in an unscannable
state.
Parameters
name
The name (optionally schema-qualified) of the materialized view to
refresh.
Notes
While the default index for future
operations is retained, REFRESH MATERIALIZED VIEW> does not
order the generated rows based on this property. If you want the data
to be ordered upon generation, you must use an ORDER BY>
clause in the backing query.
Examples
This command will replace the contents of the materialized view called
order_summary using the query from the materialized
view's definition, and leave it in a scannable state:
REFRESH MATERIALIZED VIEW order_summary;
This command will free storage associated with the materialized view
annual_statistics_basis and leave it in an unscannable
state:
REFRESH MATERIALIZED VIEW annual_statistics_basis WITH NO DATA;
Compatibility
REFRESH MATERIALIZED VIEW is a
PostgreSQL extension.
See Also