[jira] [Commented] (TAJO-571) (Umbrella) More query validation checks

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

    [ https://issues.apache.org/jira/browse/TAJO-571?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13887534#comment-13887534 ] 

Hyunsik Choi commented on TAJO-571:
-----------------------------------

FYI, the validation check should be performed in ExprsVerifier, PreLogicalPlanVerifier, and LogicalPlanVerifier. You should insert some validation code into proper visitor methods.

> (Umbrella) More query validation checks
> ---------------------------------------
>
>                 Key: TAJO-571
>                 URL: https://issues.apache.org/jira/browse/TAJO-571
>             Project: Tajo
>          Issue Type: Improvement
>          Components: planner/optimizer
>            Reporter: Hyunsik Choi
>
> SQL is a declarative language. So, it is easy for users to submit wrong query statements to the system. Some wrong queries are launched to a cluster even though they are invalid and cannot be executed.
> In this issue, we will add some validation checks to not allow wrong queries to be launched to a cluster.
> This is an umbrella issue. I'll create subtasks for it.



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