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From "Sean Hsuan-Yi Chu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-4507) TO_TIMESTAMP does not generate TIMESTAMP data type in metadata
Date Fri, 29 Apr 2016 04:00:15 GMT

    [ https://issues.apache.org/jira/browse/DRILL-4507?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15263498#comment-15263498
] 

Sean Hsuan-Yi Chu commented on DRILL-4507:
------------------------------------------

Just submitted a PR.

> TO_TIMESTAMP does not generate TIMESTAMP data type in metadata
> --------------------------------------------------------------
>
>                 Key: DRILL-4507
>                 URL: https://issues.apache.org/jira/browse/DRILL-4507
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Execution - Data Types
>    Affects Versions: 1.5.0
>            Reporter: Ian Hellstrom
>            Assignee: Sean Hsuan-Yi Chu
>
> When creating a view that contains the TO_TIMESTAMP() casting function, the resulting
column does not show up as a TIMESTAMP but rather as data type ANY:
> {code}
>  CREATE VIEW timestamp_test AS SELECT TO_TIMESTAMP('2008-2-23 12:00:00', 'yyyy-MM-dd
HH:mm:ss') FROM (VALUES(1));
> DESCRIBE timestamp_test;
> {code}
> yields:
> {code}
> +--------------+------------+--------------+
> | COLUMN_NAME  | DATA_TYPE  | IS_NULLABLE  |
> +--------------+------------+--------------+
> | EXPR$0       | ANY        | YES          |
> +--------------+------------+--------------+
> {code}
> The same is true when using TO_DATE and SUBSTR.
> Explicit casts with CAST(ts AS TIMESTAMP) or CAST(str AS VARCHAR(10)) work as expected.



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