[jira] [Commented] (CALCITE-613) Implicitly convert character values in comparisons

["Danny Chen (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CALCITE-613?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17292596#comment-17292596 ] 

Danny Chen commented on CALCITE-613:
------------------------------------

Yes, this is a common case that implicit type coercion should cover.

> Implicitly convert character values in comparisons
> --------------------------------------------------
>
>                 Key: CALCITE-613
>                 URL: https://issues.apache.org/jira/browse/CALCITE-613
>             Project: Calcite
>          Issue Type: Bug
>            Reporter: Sean Hsuan-Yi Chu
>            Assignee: Julian Hyde
>            Priority: Major
>             Fix For: 1.2.0-incubating
>
>
> In relational DB such as Postgres, this query works fine.
> "select ... from ... where column (INT type) between '10' and '11'"
> Calcite blocks this query early by the fact that data types "char" & "integer" are not directly compatible. However, this is very common for people to filter columns with date types. For example,
> "...where date between '1911-01-01' and '1911-01-02' "
> To relax this type check when comparing with literals can help improve usability.



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