Yes, you are right, they are similar. But metadata framework can't provide the
flexibility for the optimization engine to extend to other trait without
modifying the core. Our goal should be making the optimization engine do all
the work, physical operators just specify its behavior and
xzh_dz created CALCITE-3450:
---
Summary: Support Intersect and Minus in RelMdTableReferences.
Key: CALCITE-3450
URL: https://issues.apache.org/jira/browse/CALCITE-3450
Project: Calcite
Issue Type:
I didn't say adding to RelNode, but a new API/interface for physical operator
only.
What matters is not the number of interfaces, but the necessity of these
methods.
- Haisheng
--
发件人：Danny Chan
日 期：2019年10月25日 09:55:56
收件人：
主
Zhuang created CALCITE-3449:
---
Summary: Modify sql will have sub schema in it's table name
Key: CALCITE-3449
URL: https://issues.apache.org/jira/browse/CALCITE-3449
Project: Calcite
Issue Type: Bug
jin xing created CALCITE-3448:
-
Summary: AggregateOnProjectToAggregateUnifyRule ignores Project
incorrectly when there's missing grouping or mapping breaks ordering
Key: CALCITE-3448
URL:
Oh, you can add my weixin(send personal mail for that) and I have a free ticket
for the conference !
Best,
Danny Chan
在 2019年10月25日 +0800 PM6:29，Juan Pan ，写道：
> Hi Danny,
>
>
> I am interested in your coming talk in Beijing China. How to take part in it,
> can you give me more detail?
>
>
>
Hi Danny,
I am interested in your coming talk in Beijing China. How to take part in it,
can you give me more detail?
Juan Pan
panj...@apache.org
Juan Pan(Trista), Apache ShardingSphere
On 10/23/2019 18:23，Danny Chan wrote：
I gave a talk last year in a university in
France, and nobody in
daimin created CALCITE-3447:
---
Summary: Fix equivalents in method SubstitutionVisitor#go
Key: CALCITE-3447
URL: https://issues.apache.org/jira/browse/CALCITE-3447
Project: Calcite
Issue Type: Bug
I would like a further clarification regarding the methods:
derivedDistribution()
derivedCollation()
What would be the difference with the existing derivation mechanism in
RelMdDistribution [1], and RelMdCollation [2].
They are not sufficient to provide the necessary information?
[1]
