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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-4565) Support for SQL IN operator
Date Thu, 02 Mar 2017 16:17:45 GMT

    [ https://issues.apache.org/jira/browse/FLINK-4565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15892519#comment-15892519
] 

ASF GitHub Bot commented on FLINK-4565:
---------------------------------------

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

    https://github.com/apache/flink/pull/2870#discussion_r103963098
  
    --- Diff: flink-libraries/flink-table/src/main/scala/org/apache/flink/api/table/codegen/calls/ScalarOperators.scala
---
    @@ -79,6 +79,72 @@ object ScalarOperators {
         }
       }
     
    +  def generateIn(
    +      nullCheck: Boolean,
    +      left: GeneratedExpression,
    +      right: scala.collection.mutable.Buffer[GeneratedExpression],
    +      addReusableCodeCallback: (String, String) => Any)
    +    : GeneratedExpression = {
    +    val resultTerm = newName("result")
    +    val isNull = newName("isNull")
    +
    +    val topNumericalType: Option[TypeInformation[_]] = {
    --- End diff --
    
    IMHO, calculating the top numerical type seems not too specific to me.


> Support for SQL IN operator
> ---------------------------
>
>                 Key: FLINK-4565
>                 URL: https://issues.apache.org/jira/browse/FLINK-4565
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table API & SQL
>            Reporter: Timo Walther
>            Assignee: Dmytro Shkvyra
>
> It seems that Flink SQL supports the uncorrelated sub-query IN operator. But it should
also be available in the Table API and tested.



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