NAME

       REFRESH_MATERIALIZED_VIEW - replace the contents of a materialized view

SYNOPSIS

       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 CLUSTER(7) 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

       CREATE MATERIALIZED VIEW (CREATE_MATERIALIZED_VIEW(7)), ALTER MATERIALIZED VIEW
       (ALTER_MATERIALIZED_VIEW(7)), DROP MATERIALIZED VIEW (DROP_MATERIALIZED_VIEW(7))