lakeshen

icon indicating a website link https://www.zhihu.com/people/shencom/posts icon indicating an email [email protected]

icon location HangZhou icon location Apache Calcite Committer. Focus on SQL optimizer and bigdata engine.

Results 16 comments of lakeshen

[CALCITE-5881] Support to get foreign keys metadata in RelMetadataQuery

Another point,Do you need add a class GeneratedMetadata_ForeignXXX like GeneratedMetadata_CollationHandler.java? ![image](https://github.com/apache/calcite/assets/8057451/311c50ef-75f1-48f6-8108-73ab39ec875a)

[CALCITE-5881] Support to get foreign keys metadata in RelMetadataQuery

Maybe we could close this PR,because we would add the functional dependency,the jira is https://issues.apache.org/jira/browse/CALCITE-5913

[CALCITE-5881] Support to get foreign keys metadata in RelMetadataQuery

IMO,a foreign key is one of the table constraints, the current in Calcite, we could use Statistic# getReferentialConstraints method to get the table's foreign key. So in an SQL plan(RelNode...

[CALCITE-5991] Reduce the number of tasks related to AbstractConverter in TopDownRuleDriver

Could you add the unit test for you logic?

[CALCITE-5523] RelToSql converter generates GROUP BY clause with wind…

Hi @JiajunBernoulli It looks like the title and commit's description is not clear.

[CALCITE-6020] SqlToRelConverter should not replace windowed SUM with…

Hi @kgyrtkirk ,I find some information in PR's title and commits are omitted, I don't know whether this is normal.