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https://issues.apache.org/jira/browse/FLINK-7814?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16478816#comment-16478816
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ASF GitHub Bot commented on FLINK-7814:
---------------------------------------

Github user xccui commented on a diff in the pull request:

    https://github.com/apache/flink/pull/6027#discussion_r188891227
  
    --- Diff: 
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/api/scala/expressionDsl.scala
 ---
    @@ -809,6 +809,23 @@ trait ImplicitExpressionOperations {
         */
       def sha2(hashLength: Expression) = Sha2(expr, hashLength)
     
    +  /**
    +    * Returns the Between with lower bound and upper bound.
    +    * @param lowerBound
    +    * @param upperBound
    +    * @return Returns the Between with lower bound and upper bound
    +    */
    +  def between(lowerBound: Expression, upperBound: Expression) =
    +    Between(expr, lowerBound, upperBound)
    +
    +  /**
    +    * Returns the not Between with lower bound and upper bound.
    --- End diff --
    
    Same with the comment above.


> Add BETWEEN and NOT BETWEEN expression to Table API
> ---------------------------------------------------
>
>                 Key: FLINK-7814
>                 URL: https://issues.apache.org/jira/browse/FLINK-7814
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table API & SQL
>    Affects Versions: 1.4.0
>            Reporter: Fabian Hueske
>            Assignee: Ruidong Li
>            Priority: Minor
>
> * The Table API does not have a BETWEEN expression. BETWEEN is quite handy 
> when defining join predicates for window joins.



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