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Posted to dev@flink.apache.org by "Jark Wu (JIRA)" <ji...@apache.org> on 2017/06/02 13:55:04 UTC
[jira] [Created] (FLINK-6834) Over window doesn't support complex
calculation
Jark Wu created FLINK-6834:
------------------------------
Summary: 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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