[jira] [Resolved] (FLINK-6737) Fix over expression parse String error.

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

     [ https://issues.apache.org/jira/browse/FLINK-6737?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Timo Walther resolved FLINK-6737.
---------------------------------
       Resolution: Fixed
    Fix Version/s: 1.4.0
                   1.3.0

Fixed in 1.4.0: 391d305848a8b19fa1df34aa0b247491c862ac7d
Fixed in 1.3.0: 2ea9c5f563821aa2f394127dbd34a7c3b1a2ccf1

> Fix over expression parse String error.
> ---------------------------------------
>
>                 Key: FLINK-6737
>                 URL: https://issues.apache.org/jira/browse/FLINK-6737
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table API & SQL
>    Affects Versions: 1.3.0
>            Reporter: sunjincheng
>            Assignee: sunjincheng
>             Fix For: 1.3.0, 1.4.0
>
>
> When we run the TableAPI as follows:
> {code}
> val windowedTable = table
>       .window(Over partitionBy 'c orderBy 'proctime preceding UNBOUNDED_ROW as 'w)
>       .select('c, "countFun(b)" over 'w as 'mycount, weightAvgFun('a, 'b) over 'w as 'wAvg)
> {code}
> We get the error:
> {code}
> org.apache.flink.table.api.TableException: The over method can only using with aggregation expression.
> 	at org.apache.flink.table.api.scala.ImplicitExpressionOperations$class.over(expressionDsl.scala:469)
> 	at org.apache.flink.table.api.scala.ImplicitExpressionConversions$LiteralStringExpression.over(expressionDsl.scala:756)
> {code}
> The reason is, the `over` method of `expressionDsl` not parse the String case.
> I think we should fix this before 1.3 release.



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