dawidwys opened a new pull request #7187: [Flink-7603] Support for WITHIN clause in MATCH_RECOGNIZE URL: https://github.com/apache/flink/pull/7187 ## What is the purpose of the change This PR introduces support for WITHIN clause in MATCH_RECOGNIZE that allows adding time constraint for the pattern. It reuses the `within` function `Pattern` in CEP library. The behavior is such that the difference between first row in a match and last row in a match must be smaller than the given period. The `WITHIN` clause accepts only constant interval value. ## Brief change log *(for example:)* - Translating WTIHIN clause to `Pattern.within` - Updated documentation ## Verifying this change This change added tests and can be verified as follows: - `PatternTranslatorTest#testWithinClause` - `PatternTranslatorTest#testWithinClauseWithYearMonthResolution` ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): (yes / **no**) - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (yes / **no**) - The serializers: (yes / **no** / don't know) - The runtime per-record code paths (performance sensitive): (yes / **no** / don't know) - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (yes / **no** / don't know) - The S3 file system connector: (yes / **no** / don't know) ## Documentation - Does this pull request introduce a new feature? (**yes** / no) - If yes, how is the feature documented? (not applicable / **docs** / JavaDocs / not documented)
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