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https://issues.apache.org/jira/browse/IGNITE-14546?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17326490#comment-17326490
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Konstantin Orlov commented on IGNITE-14546:
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[~zstan], LGTM!

> Calcite engine. MIN/MAX aggregates doesn't support string types
> ---------------------------------------------------------------
>
>                 Key: IGNITE-14546
>                 URL: https://issues.apache.org/jira/browse/IGNITE-14546
>             Project: Ignite
>          Issue Type: Bug
>            Reporter: Taras Ledkov
>            Assignee: Stanilovsky Evgeny
>            Priority: Major
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> MIN/MAX aggregates doesn't support string types.
> e.g. 
> {{CREATE TABLE TEST(val VARCHAR) }}
> {{INSERT INTO TEST VALUES ('A'), ('B'), ('C') }}
> {{ SELECT MIN(val), MAX(val) FROM TEST}}
> Test: {{src/test/sql/aggregate/aggregates/test_aggr_string.test}}



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