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https://issues.apache.org/jira/browse/FLINK-7599?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16699166#comment-16699166
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ASF GitHub Bot commented on FLINK-7599:
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dawidwys opened a new pull request #7177: [FLINK-7599] Support for aggregates
in MATCH_RECOGNIZE
URL: https://github.com/apache/flink/pull/7177
## What is the purpose of the change
This change allows using aggregates in MEASURES and DEFINE clauses of
MATCH_RECOGNIZE in sql.
## Brief change log
- Split `AggregateUtil#transformToAggregateFunctions`
- generating code for aggregates in
`org.apache.flink.table.codegen.MatchCodeGenerator.AggBuilder`
- extended verification of aggregates' operands in
`org.apache.flink.table.codegen.PatternVariableFinder` that checks for operands
in udags
Still missing:
- support for `open/close` methods (depends on #7110)
- do not support distinct aggregates (depends on
https://issues.apache.org/jira/browse/CALCITE-2707)
- updated documentation
## Verifying this change
Added tests:
*
`org.apache.flink.table.match.MatchOperatorValidationTest#testAggregatesOnMultiplePatternVariablesNotSupported`
*
`org.apache.flink.table.runtime.stream.sql.MatchRecognizeITCase#testCepAggregates`
*
`org.apache.flink.table.`match`.MatchOperatorValidationTest#testAggregatesOnMultiplePatternVariablesNotSupportedInUDAGs`
## 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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> Support aggregation functions in the define and measures clause of
> MatchRecognize
> ---------------------------------------------------------------------------------
>
> Key: FLINK-7599
> URL: https://issues.apache.org/jira/browse/FLINK-7599
> Project: Flink
> Issue Type: Sub-task
> Components: CEP, Table API & SQL
> Reporter: Dian Fu
> Assignee: Dawid Wysakowicz
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.8.0
>
>
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