A description of named and unnamed windows and their behaviour in Sybase CEP.
Unnamed windows are created within a query and associated with one data stream. This type of window uses the same schema as its stream, and receives the same rows as the data stream (although the window saves the state of the rows while the stream merely lets the rows pass through). Once a window is defined in a query, it replaces its related stream as the data source for the query. A window defined within a query can only be used by that query.
Named windows are defined independently of the query, in a separate CCL statement. Named windows have their own schema, and rows can be inserted into a named window from more than one query. Named windows may also be accessed by more than one query.