Aljoscha Krettek announces the general availablity of Apache Flink version 1.8.0:
SQL pattern detection with user-defined functions and aggregations: The support of the MATCH_RECOGNIZE clause has been extended by multiple features. The addition of user-defined functions allows for custom logic during pattern detection (FLINK-10597), while adding aggregations allows for more complex CEP definitions, such as the following (FLINK-7599).
There are several really nice changes. I pointed out this one to get people to vote up Itzik Ben-Gan’s feedback item to get row pattern recognition in SQL Server.