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https://issues.apache.org/jira/browse/KYLIN-4464?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17101320#comment-17101320
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ASF GitHub Bot commented on KYLIN-4464:
---------------------------------------
Wayne1c opened a new pull request #1198:
URL: https://github.com/apache/kylin/pull/1198
…jection
## Proposed changes
Describe the big picture of your changes here to communicate to the
maintainers why we should accept this pull request. If it fixes a bug or
resolves a feature request, be sure to link to that issue.
## Types of changes
What types of changes does your code introduce to Kylin?
_Put an `x` in the boxes that apply_
- [ ] Bugfix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] Documentation Update (if none of the other choices apply)
## Checklist
_Put an `x` in the boxes that apply. You can also fill these out after
creating the PR. If you're unsure about any of them, don't hesitate to ask.
We're here to help! This is simply a reminder of what we are going to look for
before merging your code._
- [ ] I have create an issue on [Kylin's
jira](https://issues.apache.org/jira/browse/KYLIN), and have described the
bug/feature there in detail
- [ ] Commit messages in my PR start with the related jira ID, like
"KYLIN-0000 Make Kylin project open-source"
- [ ] Compiling and unit tests pass locally with my changes
- [ ] I have added tests that prove my fix is effective or that my feature
works
- [ ] If this change need a document change, I will prepare another pr
against the `document` branch
- [ ] Any dependent changes have been merged
## Further comments
If this is a relatively large or complex change, kick off the discussion at
user@kylin or dev@kylin by explaining why you chose the solution you did and
what alternatives you considered, etc...
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> Query ... row_number over(order by c1) ... order by c2 ... get wrong order
> result
> ---------------------------------------------------------------------------------
>
> Key: KYLIN-4464
> URL: https://issues.apache.org/jira/browse/KYLIN-4464
> Project: Kylin
> Issue Type: Bug
> Components: Query Engine
> Reporter: Chao Long
> Assignee: Chao Long
> Priority: Major
> Fix For: v3.0.2, v2.6.6
>
> Attachments: image-2020-04-20-18-19-40-925.png,
> image-2020-04-20-18-22-34-765.png
>
>
> *SQL*
> {code:java}
> select t.*, row_number() over (order by t.lstg_format_name) as row_num from (
> select lstg_format_name, sum(price) as GMV from
> KYLIN_SALES
> where lstg_format_name is not null
> group by lstg_format_name
> ) as t
> order by t.GMV desc limit 5{quote}
> {code}
>
> *Kylin result (order by lstg_format_name)*
> !image-2020-04-20-18-19-40-925.png!
>
> *Calcite execution plan*
> {code:java}
> EXECUTION PLAN BEFORE REWRITE
> OLAPToEnumerableConverter
> OLAPWindowRel(window#0=[window(partition {} order by [0 DESC] rows between
> UNBOUNDED PRECEDING and CURRENT ROW aggs [ROW_NUMBER()])], ctx=[],
> groups=[[window(partition {} order by [0 DESC] rows between UNBOUNDED
> PRECEDING and CURRENT ROW aggs [ROW_NUMBER()])]])
> OLAPLimitRel(ctx=[], fetch=[50000])
> OLAPSortRel(sort0=[$1], dir0=[DESC], ctx=[])
> OLAPAggregateRel(group=[{0}], GMV=[SUM($1)], ctx=[])
> OLAPProjectRel(LSTG_FORMAT_NAME=[$2], PRICE=[$5], ctx=[])
> OLAPFilterRel(condition=[IS NOT NULL($2)], ctx=[])
> OLAPTableScan(table=[[DEFAULT, KYLIN_SALES]], ctx=[],
> fields=[[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]])
> {code}
>
> *Hive result(order by GMV)*
> !image-2020-04-20-18-22-34-765.png!
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