## Editing a query

You can edit queries added to a catalog at any time according to your requirements. To edit a query, in the Data tab of the Catalog Browser, right-click the query in the Queries node and select Edit Query from the shortcut menu. In the Query Editor window, edit the query as required. For example, you can add some extra tables to the query and define join relationship among these tables.

See also Query Editor window for additional help about options in the window.

This section details how to edit an existing query as follows:

- Adding/deleting tables
- Joining tables in a query
- Filtering the fields of a query
- Editing the SQL statements of a query
- Creating computed columns in a query
- Adding formula fields to a query