[GitHub] dianfu opened a new pull request #7235: [FLINK-10976] [table] Add support for aggregate to table API

[GitBox <gi...@apache.org>]

dianfu opened a new pull request #7235: [FLINK-10976] [table] Add support for aggregate to table API
URL: https://github.com/apache/flink/pull/7235
 
 
   ## What is the purpose of the change
   
   *This pull request adds the aggregate operation to table API.*
   
   ## Brief change log
   
     - *Adds aggregate API to Table and GroupedTable in table.scala and adds AggregatedTable in table.scala*
     - *Added tests in AggregateTest, AggregateITCase, AggregateStringExpressionTest, AggregateValidationTest*
   
   ## Verifying this change
   
   This change added tests and can be verified as follows:
   
   *(example:)*
     - *Added tests in AggregateTest, AggregateITCase, AggregateStringExpressionTest, AggregateValidationTest*
   
   ## Does this pull request potentially affect one of the following parts:
   
     - Dependencies (does it add or upgrade a dependency): (no)
     - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (yes)
     - The serializers: (no)
     - The runtime per-record code paths (performance sensitive): (no)
     - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (no)
     - The S3 file system connector: (no)
   
   ## Documentation
   
     - Does this pull request introduce a new feature? (yes)
     - If yes, how is the feature documented? (docs)
   

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