[jira] [Created] (FLINK-6941) Selecting window start / end on over window causes field not resolve exception

["sunjincheng (JIRA)" <ji...@apache.org>]

sunjincheng created FLINK-6941:
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             Summary: 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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