pg_matviews
The view pg_matviews provides access to useful information about each materialized view in the database.
Table pg_matviews Columns
| Column Type Description | 
|---|
 Name of schema containing materialized view  | 
 Name of materialized view  | 
 Name of materialized view's owner  | 
 Name of tablespace containing materialized view (null if default for database)  | 
 True if materialized view has (or recently had) any indexes  | 
 True if materialized view is currently populated  | 
 Materialized view definition (a reconstructed SELECT query)  |