[teiid-issues] [JBoss JIRA] (TEIID-4099) Improve with clause performance with incremental materialization

[Steven Hawkins (JIRA)]

    [ https://issues.jboss.org/browse/TEIID-4099?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13478204#comment-13478204 ] 

Steven Hawkins commented on TEIID-4099:
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Looking into this more incremental materialization should be separated as a general issue for materialized view.

What I'm assessing here is now just additional logic around predicates / ordering to apply indexing when beneficial.

> Improve with clause performance with incremental materialization
> ----------------------------------------------------------------
>
>                 Key: TEIID-4099
>                 URL: https://issues.jboss.org/browse/TEIID-4099
>             Project: Teiid
>          Issue Type: Enhancement
>          Components: Query Engine
>            Reporter: Steven Hawkins
>            Assignee: Steven Hawkins
>             Fix For: 10.0
>
>
> When a with clause item is first referenced it is fully materialized before use.  We should generally allow iterative processing for full table scans - in scenarios where the table hasn't been augmented to add inferred indexes.
> Another possible improvement to consider would be to fully analyse the predicates used against the common table to determine if a disjunct of all would limit the rows needed.



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