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Posted to issues@calcite.apache.org by "Xurenhe (Jira)" <ji...@apache.org> on 2022/04/14 11:38:00 UTC
[jira] [Comment Edited] (CALCITE-5000) Expand rule of `AGGREGATE_REDUCE_FUNCTIONS`, when arg of agg-call is in the aggregate's group
[ https://issues.apache.org/jira/browse/CALCITE-5000?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17491863#comment-17491863 ]
Xurenhe edited comment on CALCITE-5000 at 4/14/22 11:37 AM:
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Hi community
Take your time to review this [PR|http://[https://github.com/apache/calcite/pull/2714/files]]
Please tell me, If some cases of agg-call is missing.
Thanks a lot.
was (Author: wojustme):
Hi community
Take your time to review this issue
PR: [https://github.com/apache/calcite/pull/2714/files]
If not question, please ping me to rebase this pr.
Thanks a lot.
> Expand rule of `AGGREGATE_REDUCE_FUNCTIONS`, when arg of agg-call is in the aggregate's group
> ---------------------------------------------------------------------------------------------
>
> Key: CALCITE-5000
> URL: https://issues.apache.org/jira/browse/CALCITE-5000
> Project: Calcite
> Issue Type: Improvement
> Reporter: Xurenhe
> Assignee: Xurenhe
> Priority: Major
> Labels: pull-request-available
> Time Spent: 2h 10m
> Remaining Estimate: 0h
>
> Using calcite'sĀ SubstitutionVisitor, we need do a lot work aboutĀ canonicalizing relnode.
> Some sql should be simplified.
> {noformat}
> -- origin sql
> select deptno, salary, max(salary), min(commission)
> from emps
> group by deptno, salary
> -- simplified
> select deptno, salary, salary as expr, min(commission)
> from emps
> group by deptno, salary{noformat}
> It should be simplified, but I didn't find any rule to simplify it.
> This issue is related to CALCITE-4857
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