[jira] [Commented] (DRILL-7616) Wrong MIN() and MAX() values for TSV file

["Vova Vysotskyi (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DRILL-7616?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17049211#comment-17049211 ] 

Vova Vysotskyi commented on DRILL-7616:
---------------------------------------

[~sj14], Drill by default reads text files data as VARCHAR, so MIN and MAX functions are applied to strings. You may either add a cast to int to compare values as ints:
{code:sql}
SELECT MIN(cast(requests as int)) FROM TABLE(dfs.`/.../requests.tsv`(type => 'text', extractHeader => true, fieldDelimiter => '\t'));
{code}
or you may use a schema provisioning feature: [https://drill.apache.org/docs/create-or-replace-schema/].

> Wrong MIN() and MAX() values for TSV file
> -----------------------------------------
>
>                 Key: DRILL-7616
>                 URL: https://issues.apache.org/jira/browse/DRILL-7616
>             Project: Apache Drill
>          Issue Type: Bug
>    Affects Versions: 1.17.0
>         Environment: Docker image
>            Reporter: Simon Jürgensmeyer
>            Priority: Major
>         Attachments: requests.tsv
>
>
> MIN() and MAX() give wrong results.
> {code:java}
> SELECT MIN(requests) FROM TABLE(dfs.`/.../requests.tsv`(type => 'text', extractHeader => true, fieldDelimiter => '\t'));
> +--------+ 
> | EXPR$0 | 
> +--------+ 
> | 102996 | 
> +--------+
> {code}
>  Expected MIN value: 2020
>  
> {code:java}
> SELECT MAX(requests) FROM TABLE(dfs.`/.../requests.tsv`(type => 'text', extractHeader => true, fieldDelimiter => '\t'));
> +--------+
> | EXPR$0 |
> +--------+
> | 97728  |
> +--------+
> {code}
>  Expected MAX value: 185594



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