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https://issues.apache.org/jira/browse/CALCITE-6677?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated CALCITE-6677:
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Labels: pull-request-available (was: )
> HAVING clauses fail validation when type coercion is applied to GROUP BY
> clause
> -------------------------------------------------------------------------------
>
> Key: CALCITE-6677
> URL: https://issues.apache.org/jira/browse/CALCITE-6677
> Project: Calcite
> Issue Type: Bug
> Reporter: Tracy Sassaman
> Assignee: Mihai Budiu
> Priority: Critical
> Labels: pull-request-available
>
> Given a sql statement like:
> select if(EMP.empno <= CAST(18 AS DOUBLE), 'youth', 'adult') as adult_or_child
> from EMP
> GROUP BY if(EMP.empno <= CAST(18 AS DOUBLE), 'youth', 'adult')
> HAVING if(EMP.empno <= CAST(18 AS DOUBLE), 'youth', 'adult') = 'adult'
>
> Sql Validation fails with the error:
> org.apache.calcite.sql.validate.SqlValidatorException: Expression 'EMP.EMPNO'
> is not being grouped
>
> Root cause: A cast is applied to the group by clause, to make it GROUP BY if(
> CAST (EMP.empno AS DOUBLE) <= CAST(18 AS DOUBLE), 'youth', 'adult')
> But no such cast is applied to the Having Clause. Consequently, an equality
> comparison on the two fails
>
>
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