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