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https://issues.apache.org/jira/browse/FLINK-6834?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chesnay Schepler closed FLINK-6834.
-----------------------------------
Resolution: Fixed
1.4: 1cc1bb41e94b585200d9f7179bdeaa0bec0dcc5d
> Over window doesn't support complex calculation
> -----------------------------------------------
>
> Key: FLINK-6834
> URL: https://issues.apache.org/jira/browse/FLINK-6834
> Project: Flink
> Issue Type: Bug
> Components: Table API & SQL
> Reporter: Jark Wu
> Assignee: Jark Wu
> Fix For: 1.4.0
>
>
> The following example
> {code}
> val windowedTable = table
> .window(
> Over partitionBy 'c orderBy 'rowtime preceding UNBOUNDED_ROW as 'w)
> .select('c, 'b, ('a.count over 'w) + 1)
> {code}
> will throw exception:
> {code}
> org.apache.flink.table.api.ValidationException: Expression
> UnresolvedOverCall(count('a),'w) failed on input check: Over window with
> alias $alias could not be resolved.
> at
> org.apache.flink.table.plan.logical.LogicalNode.failValidation(LogicalNode.scala:143)
> at
> org.apache.flink.table.plan.logical.LogicalNode$$anonfun$validate$1.applyOrElse(LogicalNode.scala:89)
> at
> org.apache.flink.table.plan.logical.LogicalNode$$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)
> {code}
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