This chapter teaches you how to create basic CCL windows and use them in queries. Windows permit you to maintain the state of rows that have been previously processed from a stream.
Using Windows in a FROM Clause
CCL windows are typically defined by the use of a KEEP clause. This section explains how to define basic windows by adding a KEEP clause to the FROM clause of your query. See the Sybase CEP CCL Reference for complete KEEP clause syntax.
Defining Named Windows
In addition to creating unnamed windows inside a FROM clause, you can also create reusable window definitions that can be shared by multiple queries.
Grouping a Window
Describes how Sybase CEP partitions windows into one or more more column values.