[jira] [Commented] (TAJO-572) In an aggregation query, all expressions must appear in the GROUP BY clause or be used in an aggregate function

["Hyunsik Choi (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/TAJO-572?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14599194#comment-14599194 ] 

Hyunsik Choi commented on TAJO-572:
-----------------------------------

Hi [~atris],

I'm very sorry for late reply. You need to check out EvalNode, which is an expression representation in Tajo. Also, LogicalPlanner::verifyProjectedFields would be good staring point for this issue. The implementation verifies some of all cases mentioned in this Jira issue.

Thanks!

> In an aggregation query, all expressions must appear in the GROUP BY clause or be used in an aggregate function
> ---------------------------------------------------------------------------------------------------------------
>
>                 Key: TAJO-572
>                 URL: https://issues.apache.org/jira/browse/TAJO-572
>             Project: Tajo
>          Issue Type: Sub-task
>          Components: planner/optimizer
>            Reporter: Hyunsik Choi
>            Assignee: Atri Sharma
>
> The validation check rule is as follows:
> Condition:
>  * All query blocks which have an aggregation regardless of implicit or explicit group-by
> Rule:
>  * All expressions must appear in the GROUP BY clause or be used in an aggregate function.
>  * But, constant value is allowed.



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