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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-3086) ExpressionParser does not support concatenation of suffix operations
Date Tue, 26 Apr 2016 14:25:12 GMT

    [ https://issues.apache.org/jira/browse/FLINK-3086?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15258160#comment-15258160
] 

ASF GitHub Bot commented on FLINK-3086:
---------------------------------------

Github user vasia commented on the pull request:

    https://github.com/apache/flink/pull/1912#issuecomment-214762168
  
    I'm not very familiar with the `ExpressionParser`, but I don't see anything suspicious
:)


> ExpressionParser does not support concatenation of suffix operations
> --------------------------------------------------------------------
>
>                 Key: FLINK-3086
>                 URL: https://issues.apache.org/jira/browse/FLINK-3086
>             Project: Flink
>          Issue Type: Bug
>          Components: Table API
>            Reporter: Timo Walther
>            Assignee: Timo Walther
>
> The ExpressionParser of the Table API does not support concatenation of suffix operations.
e.g. {code}table.select("field.cast(STRING).substring(2)"){code} throws  an exception.
> {code}
> org.apache.flink.api.table.ExpressionException: Could not parse expression: string matching
regex `\z' expected but `.' found
> 	at org.apache.flink.api.table.parser.ExpressionParser$.parseExpressionList(ExpressionParser.scala:224)
> {code}
> However, the Scala implicit Table Expression API supports this.



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