twalthr opened a new pull request #8945: [FLINK-13045][table] Move Scala 
expression DSL to flink-table-api-scala
URL: https://github.com/apache/flink/pull/8945
 
 
   ## What is the purpose of the change
   
   This PR move the Scala expression DSL to `flink-table-api-scala`.
   
   Users of pure table programs should define there imports like:
   
   ```
   import org.apache.flink.table.api._
   
   TableEnvironment.create(...)
   ```
   
   Users of the DataStream API should define their imports like:
   ```
   import org.apache.flink.table.api._
   import org.apache.flink.table.api.scala._
   
   StreamTableEnvironment.create(...)
   ```
   
   This PR did not split the package object 
`org.apache.flink.table.api.scala._` into two parts yet because we want to give 
users the chance to update their imports.
   
   ## Brief change log
   
   - Updated all Scala implicits
   - Move the implicits to their final destination
   
   ## Verifying this change
   
   This change is already covered by existing tests.
   
   ## Does this pull request potentially affect one of the following parts:
   
     - Dependencies (does it add or upgrade a dependency): yes
     - The public API, i.e., is any changed class annotated with 
`@Public(Evolving)`: no
     - 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? no
     - If yes, how is the feature documented? docs 
   

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