[jira] [Comment Edited] (CALCITE-5598) Expand expression in a GROUP BY clause returns wrong result in case of expressions referenced by column index

["Runkang He (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CALCITE-5598?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17716481#comment-17716481 ] 

Runkang He edited comment on CALCITE-5598 at 4/26/23 1:10 AM:
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[~julianhyde] I'm not sure how BigQuery uses calcite, does it only use the parsing layer? If so, this problem is BigQuery's part, not Calcite's part.


was (Author: JIRAUSER280488):
[~julianhyde] I'm not sure how bigquery uses calcite, does it only use the parsing layer? If so, this problem is BigQuery's part, not Calcite's part.

> Expand expression in a GROUP BY clause returns wrong result in case of expressions referenced by column index
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: CALCITE-5598
>                 URL: https://issues.apache.org/jira/browse/CALCITE-5598
>             Project: Calcite
>          Issue Type: Bug
>    Affects Versions: 1.34.0
>            Reporter: Zine eddine Zidane
>            Priority: Blocker
>
> Given the following BigQuery query:
>  
> {code:java}
> SELECT CAST(user_id AS STRING) AS id, COUNT(*) FROM `users` GROUP BY 1 HAVING COUNT (*)>1;{code}
>  
> SqlValidatorImpl extendedExpand method returns "CAST(user_id AS STRING)" for expression “1” in the GROUP BY clause resulting in the following validated query:
>  
> {code:java}
> SELECT CAST(user_id AS STRING) AS id, COUNT(*) FROM `users` GROUP BY CAST(user_id AS STRING) HAVING COUNT (*)>1;{code}
>  
> This query fails on BigQuery with the error: 
> {code:java}
> SELECT list expression references user_id which is neither grouped nor aggregated at [1:24] on source.{code}



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