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6-32 Oracle Complex Event Processing Visualizer Users Guide ■ PATTERN : Use this clause to specify quantifiers that constrain and control when conditions in the DEFINE clause match. See Figure 6–43, Query Wizard Pattern Editor Dialog: Pattern Tab . ■ DEFINE : Use this clause to specify one or more conditions. Specify one or more patterns made up of a pattern identifier, the AS operator, and a condition. The condition can use any stream elements in the schema of the stream, view, or sliding window specified by the identifier you used in your query or view select statement. See Figure 6–44, Query Wizard Pattern Editor Dialog: Define Tab . ■ SUBSET : Using this clause, you can bind a name to the stream elements that one or more patterns select. You can use this named subset in the MEASURE and DEFINE clauses. See Figure 6–45, Query Wizard Pattern Editor Dialog: Subset Tab . ■ MEASURE : Use this clause to define expressions in a MATCH_RECOGNIZE condition and to bind stream elements that match conditions in the DEFINE clause to arguments that you can include in the select statement of a query. You can use any of the Oracle CQL built-in or user-defined functions. See Figure 6–46, Query Wizard Pattern Editor Dialog: Measure Tab . For more information and detailed syntax, see: ■ MATCH_RECOGNIZE Condition in the Oracle Complex Event Processing CQL Language Reference ■ PATTERN Clause in the Oracle Complex Event Processing CQL Language Reference ■ DEFINE Clause in the Oracle Complex Event Processing CQL Language Reference ■ SUBSET Clause in the Oracle Complex Event Processing CQL Language Reference ■ MEASURES Clause in the Oracle Complex Event Processing CQL Language Reference ■ Functions in the Oracle Complex Event Processing CQL Language Reference ■ Oracle CQL Statements in the Oracle Complex Event Processing CQL Language Reference To configure a Pattern CQL construct: 1. Double click the Pattern icon as Figure 6–42 shows. Figure 6–42 Pattern Icon The Pattern editor dialog appears as Figure 6–43 shows.