[jira] [Updated] (CALCITE-5043) GROUP BY alias or SELECT field should be determined by using sql dialect when alias and field are same

["yanjing.wang (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-5043?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

yanjing.wang updated CALCITE-5043:
----------------------------------
    Fix Version/s:     (was: 1.33.0)

> GROUP BY alias or SELECT field should be determined by using sql dialect when alias and field are same
> ------------------------------------------------------------------------------------------------------
>
>                 Key: CALCITE-5043
>                 URL: https://issues.apache.org/jira/browse/CALCITE-5043
>             Project: Calcite
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 1.29.0
>         Environment: jdk8
>            Reporter: yanjing.wang
>            Assignee: yanjing.wang
>            Priority: Major
>
> {noformat}
> select length(ename) as ename from emp group by ename{noformat}
> PostgreSQL: group by empno will be expanded to group by emp.empno.
> BigQuery: group by empno will be expanded to group by length(ename).
> MySQL ONLY_FULL_GROUP_BY mode(default mode): as PostgreSQL.
> MySQL extension:  as PostgreSQL.
> {noformat}
> select empno + deptno as empno from emp group by empno{noformat}
> PostgreSQL: throws column "emp.empno" must appear in the GROUP BY clause or be used in an aggregate function.
> BigQuery: group by empno will be expanded to group by empno + deptno.
> MySQL ONLY_FULL_GROUP_BY mode(default mode): throws as PostgreSQL.
> MySQL extension:  group by empno will be expanded to group by emp.empno.
> {noformat}
> select a.deptno + b.deptno as deptno from emp a , dept b group by deptno
> {noformat}
> PostgreSQL: throws column reference "deptno" is ambiguous.
> BigQuery: group by deptno will be expanded to group by a.deptno + b.deptno.
> MySQL ONLY_FULL_GROUP_BY mode(default mode): throws as PostgreSQL.
> MySQL extension:  as BigQuery.
> We need support expanding GROUP BY alias or SELECT field according to the sql dialect.



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