---
title: "`view_column_usage`"
id: infoschema-view-column-usage
pg_version: "20devel"
---

<a id="infoschema-view-column-usage"></a>

## 35.73. `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.

**view_column_usage Columns**

| Column 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 |