REFRESH MATERIALIZED VIEW — replace the contents of a materialized view
REFRESH MATERIALIZED VIEW [ CONCURRENTLY ]
name[ WITH [ NO ] DATA ]
REFRESH MATERIALIZED VIEW
completely replaces the contents of a materialized view. To
execute this command you must be the owner of the 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
WITH NO DATA may not be specified
Refresh the materialized view without locking out concurrent selects on the materialized view. Without this option a refresh which affects a lot of rows will tend to use fewer resources and complete more quickly, but could block other connections which are trying to read from the materialized view. This option may be faster in cases where a small number of rows are affected.
This option is only allowed if there is at least one
UNIQUE index on the
materialized view which uses only column names and
includes all rows; that is, it must not index on any
expressions nor include a
This option may not be used when the materialized view is not already populated.
Even with this option only one
REFRESH at a time may run against any
one materialized view.
The name (optionally schema-qualified) of the materialized view to refresh.
While the default index for future CLUSTER 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
This command will replace the contents of the materialized
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
annual_statistics_basis and leave it in an
REFRESH MATERIALIZED VIEW annual_statistics_basis WITH NO DATA;
REFRESH MATERIALIZED VIEW is a
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