[teiid-issues] [JBoss JIRA] Created: (TEIID-1568) Partial Pushdown of WHERE clause columns

[Mark Addleman (JIRA)]

Partial Pushdown of WHERE clause columns
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                 Key: TEIID-1568
                 URL: https://issues.jboss.org/browse/TEIID-1568
             Project: Teiid
          Issue Type: Feature Request
            Reporter: Mark Addleman
            Assignee: Steven Hawkins


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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