[jira] [Assigned] (SPARK-36005) in spark3.1.2 version The canCast method of type of char/varchar needs to be consistent with StringType

["Apache Spark (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-36005?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-36005:
------------------------------------

    Assignee: Apache Spark

> in spark3.1.2 version The canCast method of type of char/varchar needs to be consistent with StringType
> -------------------------------------------------------------------------------------------------------
>
>                 Key: SPARK-36005
>                 URL: https://issues.apache.org/jira/browse/SPARK-36005
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.1.2
>            Reporter: Sun BiaoBiao
>            Assignee: Apache Spark
>            Priority: Major
>             Fix For: 3.1.3
>
>
> In https://github.com/apache/spark/pull/32109 this pr, we introduced the char/varchar type,
> As described in this issue:
> To be safe, this PR doesn't add char/varchar type to the query engine(expression input check, internal row framework, codegen framework, etc.). We will replace char/varchar type by string type with metadata (Attribute.metadata or StructField.metadata) that includes the original type string before it goes into the query engine. That said, the existing code will not see char/varchar type but only string type.
> so The canCast method of type of char/varchar needs to be consistent with StringType



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