[jira] [Assigned] (DRILL-4642) Let RexBuilder.ensureType() mechanism take place during Rex conversion.

["Zelaine Fong (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DRILL-4642?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zelaine Fong reassigned DRILL-4642:
-----------------------------------

    Assignee: Jinfeng Ni  (was: Sean Hsuan-Yi Chu)

Assigning to [~jni] for code review.

> Let RexBuilder.ensureType() mechanism take place during Rex conversion.
> -----------------------------------------------------------------------
>
>                 Key: DRILL-4642
>                 URL: https://issues.apache.org/jira/browse/DRILL-4642
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Query Planning & Optimization
>            Reporter: Sean Hsuan-Yi Chu
>            Assignee: Jinfeng Ni
>             Fix For: Future
>
>
> In DRILL-4372, the logic of ensuring same type is removed since, in some case such as below, undesirable cast function will be added and cause failure.
> {code}
> SELECT * 
> FROM T 
> WHERE (cast(col1 as timestamp)  - to_timestamp(col2,'YYYY-MM-dd HH:mm:ss') < interval 'X XX:XX:XX' day to second)
> {code}
> The fundamental reason for this behavior roots in Drill-Calcite [1], where SqlNode WHERE is expanded to a new object but is not passed into validation step.
> [1] https://github.com/mapr/incubator-calcite/blob/DrillCalcite1.4.0-mapr-1.4.0/core/src/main/java/org/apache/calcite/sql/validate/SqlValidatorImpl.java#L3362



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)