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https://issues.apache.org/jira/browse/CALCITE-613?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14355882#comment-14355882
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Sean Hsuan-Yi Chu commented on CALCITE-613:
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There seems to be some confusion in the first test case.
(Different from Postgres) in MySql, "||" is interpreted as OR.
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So if we type
select concat('10', '0') > 900;
We will get zero, which is consistent with
select '100' > 900;
> Literals need to be treated more flexible
> -----------------------------------------
>
> 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
>
> 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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