You can customize the DW queries on individual entities in the DW Query tab in the Entity Properties dialog. DW queries are used to populate a table from its direct source tables, for example populating a dimension from its stage table(s).
If a DW query was previously entered or generated it is shown in the query editor pane.
To generate a new DW query for the entity:
- Select a Source set.
- Optionally select a template to use from the drop-down list and then click Generate. If there is an existing DW query that is different from what is generated a differences window appears, enabling you to select the changes to be made. To accept the changes click OK.
- To insert a stored query, click Insert stored SQL query
. Refer to Inserting a Stored SQL Query for details. - To store the DW query, click Store SQL query
. Refer to Storing SQL Queries for details. - Click OK or Apply to save the DW query.
Note
If you have made changes in the Source Mappings tab before editing the query, you must apply those changes before the query generation detects them. A label is shown in the top right corner of the Query tab in this scenario.
