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From "StanZhai (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SPARK-21774) The rule PromoteStrings cast string to a wrong data type
Date Fri, 18 Aug 2017 04:25:00 GMT

     [ https://issues.apache.org/jira/browse/SPARK-21774?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

StanZhai updated SPARK-21774:
-----------------------------
    External issue URL:   (was: https://github.com/apache/spark/pull/18986)

> The rule PromoteStrings cast string to a wrong data type
> --------------------------------------------------------
>
>                 Key: SPARK-21774
>                 URL: https://issues.apache.org/jira/browse/SPARK-21774
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 2.2.0
>            Reporter: StanZhai
>            Priority: Critical
>              Labels: correctness
>
> Data
> {code}
> create temporary view tb as select * from values
> ("0", 1),
> ("-0.1", 2),
> ("1", 3)
> as grouping(a, b)
> {code}
> SQL:
> {code}
> select a, b from tb where a=0
> {code}
> The result which is wrong:
> {code}
> +----+---+
> |   a|  b|
> +----+---+
> |   0|  1|
> |-0.1|  2|
> +----+---+
> {code}
> Logical Plan:
> {code}
> == Parsed Logical Plan ==
> 'Project ['a]
> +- 'Filter ('a = 0)
>    +- 'UnresolvedRelation `src`
> == Analyzed Logical Plan ==
> a: string
> Project [a#8528]
> +- Filter (cast(a#8528 as int) = 0)
>    +- SubqueryAlias src
>       +- Project [_1#8525 AS a#8528, _2#8526 AS b#8529]
>          +- LocalRelation [_1#8525, _2#8526]
> {code}



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