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REFRESH MATERIALIZED VIEW

Replaces the contents of a materialized view.

Syntax​

REFRESH MATERIALIZED VIEW <name>
    [ WITH [ NO ] DATA ]

Description​

REFRESH MATERIALIZED VIEW completely replaces the contents of a materialized view. The old contents are discarded. To run this command you must be the owner of the materialized view. 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.

  • WITH [ NO ] DATA

    WITH DATA is the default and specifies that the materialized view query is run to provide 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.

Usage notes​

If there is an ORDER BY clause in the materialized view's defining query, the original contents of the materialized view will be ordered that way; but REFRESH MATERIALIZED VIEW does not guarantee to preserve that ordering.

Examples​

This command replaces the contents of the materialized view order_summary using the query from the materialized view's definition, and leaves it in a scannable state.

REFRESH MATERIALIZED VIEW order_summary;

This command frees storage associated with the materialized view annual_statistics_basis and leaves it in an unscannable state.

REFRESH MATERIALIZED VIEW annual_statistics_basis WITH NO DATA;

SQL standard compatibility​

REFRESH MATERIALIZED VIEW is a Relyt extension of the SQL standard.