CCL Query Construction

Use a CCL query to produce a new derived stream or window from one or more other streams/windows. You can construct a query to filter data, combine two or more queries, join multiple datasources, use pattern matching rules, and aggregate data.

You can use queries only with derived elements, and can attach only one query to a derived element. A CCL query consists of a combination of several clauses that indicate the appropriate information for the derived element. A query is used with the AS clause to specify data for the derived element.