Add a Column Expression in the Materialized View Columns Editor

To add a column expression in the materialized view columns editor

1. In a physical model based on Oracle, right-click a materialized view, and select Database View Columns.
2. Select New and enter the name of the materialized view column expression in the Name box.
3. Enter the expression text in the Expression box and click OK.

More information:

Oracle Materialized View Column Editor