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