49.64. pg_matviews

The view pg_matviews provides access to useful information about each materialized view in the database.

Table 49-65. pg_matviews Columns

Name	Type	References	Description
`schemaname`	`name`	`pg_namespace.nspname`	Name of schema containing materialized view
`matviewname`	`name`	`pg_class.relname`	Name of materialized view
`matviewowner`	`name`	`pg_authid.rolname`	Name of materialized view's owner
`tablespace`	`name`	`pg_tablespace.spcname`	Name of tablespace containing materialized view (null if default for database)
`hasindexes`	`boolean`		True if materialized view has (or recently had) any indexes
`ispopulated`	`boolean`		True if materialized view is currently populated
`definition`	`text`		Materialized view definition (a reconstructed `SELECT` query)

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https://www.postgresql.org/docs/9.5/view-pg-matviews.html