You can edit existing queries in a catalog at any time. To edit a query, in the Catalog Manager right-click the query and select Edit Query from the shortcut menu, then in the Query Editor edit the query as required. For example, you can add additional data resources to use in the query and define join relationships among the resources.
This section details how to edit an existing query as follows:
Adding and Deleting Tables in a Query
Filtering the Fields of a Query
Editing the SQL Statements of a Query
Creating Computed Columns in a Query