[teiid-issues] [JBoss JIRA] (TEIID-1568) Partial Pushdown of WHERE clause columns
Steven Hawkins (JIRA)
issues at jboss.org
Wed Dec 6 10:54:12 EST 2017
[ https://issues.jboss.org/browse/TEIID-1568?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Steven Hawkins closed TEIID-1568.
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> Partial Pushdown of WHERE clause columns
> ----------------------------------------
>
> Key: TEIID-1568
> URL: https://issues.jboss.org/browse/TEIID-1568
> Project: Teiid
> Issue Type: Feature Request
> Reporter: Mark Addleman
> Assignee: Steven Hawkins
> Priority: Minor
>
> We have some exotic data sources that can efficiently support WHERE clause filtering on particular columns + operators combinations but are no better than Teiid for other operation. In particular, suppose I have a data source that supplies columns A and B. The data source can efficiently support A='some value' but may not support A>'value' or A!='value' and does not support efficient processing of column B at all. We would like an enhance supports* protocol to describe the particulars of a data source's capabilities with finer detail.
> Even partially solving this problem without operator support would be helpful
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