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DROP MATERIALIZED VIEW
DROP MATERIALIZED VIEW — remove a materialized view
Synopsis
DROP MATERIALIZED VIEW [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ]
  Description
DROP MATERIALIZED VIEW drops an existing materialized view. To execute this command you must be the owner of the materialized view.
Parameters
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IF EXISTS - 
      
Do not throw an error if the materialized view does not exist. A notice is issued in this case.
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name - 
      
The name (optionally schema-qualified) of the materialized view to remove.
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CASCADE - 
      
Automatically drop objects that depend on the materialized view (such as other materialized views, or regular views), and in turn all objects that depend on those objects (see Section 5.13).
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RESTRICT - 
      
Refuse to drop the materialized view if any objects depend on it. This is the default.
 
Examples
This command will remove the materialized view called order_summary:
DROP MATERIALIZED VIEW order_summary;
  Compatibility
DROP MATERIALIZED VIEW is a PostgreSQL extension.
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Licensed under the PostgreSQL License.
 https://www.postgresql.org/docs/10/sql-dropmaterializedview.html