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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-6941) Selecting window start / end on over window causes field not resolve exception
Date Mon, 19 Jun 2017 11:24:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-6941?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16053818#comment-16053818
] 

ASF GitHub Bot commented on FLINK-6941:
---------------------------------------

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

    https://github.com/apache/flink/pull/4137#discussion_r122681031
  
    --- Diff: flink-libraries/flink-table/src/main/scala/org/apache/flink/table/api/table.scala
---
    @@ -1004,6 +1004,11 @@ class OverWindowedTable(
           table.logicalPlan,
           table.tableEnv)
     
    +    if(fields.exists(_.isInstanceOf[WindowProperty])){
    +      throw ValidationException(
    +        "Window start and Window end can not be used on over windowed tables.")
    --- End diff --
    
    What do you think about `"Window start and end properties are not available for Over windows."`?


> Selecting window start / end on over window causes field not resolve exception
> ------------------------------------------------------------------------------
>
>                 Key: FLINK-6941
>                 URL: https://issues.apache.org/jira/browse/FLINK-6941
>             Project: Flink
>          Issue Type: Bug
>          Components: Table API & SQL
>    Affects Versions: 1.4.0
>            Reporter: sunjincheng
>            Assignee: sunjincheng
>
> Selecting window start / end on over window causes field not resolve exception.
> The following program:
> {code}
> table
>       .window(
>         Over partitionBy 'c orderBy 'proctime preceding UNBOUNDED_ROW as 'w)
>       .select('c, countFun('b) over 'w, 'w.start, 'w.end)
> {code}
> causes
> {code}
> org.apache.flink.table.api.ValidationException: Cannot resolve [w] given input [a, b,
c, proctime].
> 	at org.apache.flink.table.plan.logical.LogicalNode.failValidation(LogicalNode.scala:143)
> 	at org.apache.flink.table.plan.logical.LogicalNode$$anonfun$validate$1.applyOrElse(LogicalNode.scala:86)
> 	at org.apache.flink.table.plan.logical.LogicalNode$$anonfun$validate$1.applyOrElse(LogicalNode.scala:83)
> 	at org.apache.flink.table.plan.TreeNode.postOrderTransform(TreeNode.scala:72)
> 	at org.apache.flink.table.plan.TreeNode$$anonfun$1.apply(TreeNode.scala:46)
> 	at scala.collection.Iterator$$anon$11.next(Iterator.scala:328)
> 	at scala.collection.Iterator$class.foreach(Iterator.scala:727)
> 	at scala.collection.AbstractIterator.foreach(Iterator.scala:1157)
> 	at scala.collection.generic.Growable$class.$plus$plus$eq(Growable.scala:48)
> {code}
> We should validate that the start and end window properties are not accessed on over
windows.



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