[teiid-issues] [JBoss JIRA] (TEIID-4498) Generalize subquery batch processing
Steven Hawkins (Jira)
issues at jboss.org
Thu Dec 6 14:40:00 EST 2018
[ https://issues.jboss.org/browse/TEIID-4498?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13671578#comment-13671578 ]
Steven Hawkins commented on TEIID-4498:
---------------------------------------
The first issue with select subquery handling is that when subquery unnest defaults to true, we can plan a join plan. If it's false there isn't the later handling of the subquery - which is in RuleMergeCriteria for where subqueries.
> Generalize subquery batch processing
> ------------------------------------
>
> Key: TEIID-4498
> URL: https://issues.jboss.org/browse/TEIID-4498
> Project: Teiid
> Issue Type: Enhancement
> Components: Query Engine
> Reporter: Steven Hawkins
> Assignee: Steven Hawkins
> Priority: Major
> Fix For: 12.0
>
>
> For subqueries that cannot be unnested, but can be modified to project their correlation, we should have at least batch processing rather than the row by row default.
--
This message was sent by Atlassian Jira
(v7.12.1#712002)
More information about the teiid-issues
mailing list