PostgreSQL 9.4.4 Documentation
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# 34.60. `view_column_usage`

The view `view_column_usage` identifies all columns that are used in the query expression of a view (the `SELECT` statement that defines the view). A column is only included if the table that contains the column is owned by a currently enabled role.

> Note: Columns of system tables are not included. This should be fixed sometime.

Table 34-58. `view_column_usage` Columns

Name | Data Type | Description
--- | --- | ---
`view_catalog` | `sql_identifier` | Name of the database that contains the view (always the current database)
`view_schema` | `sql_identifier` | Name of the schema that contains the view
`view_name` | `sql_identifier` | Name of the view
`table_catalog` | `sql_identifier` | Name of the database that contains the table that contains the column that is used by the view (always the current database)
`table_schema` | `sql_identifier` | Name of the schema that contains the table that contains the column that is used by the view
`table_name` | `sql_identifier` | Name of the table that contains the column that is used by the view
`column_name` | `sql_identifier` | Name of the column that is used by the view

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