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