[teiid-issues] [JBoss JIRA] Work started: (TEIID-252) Add constant cohersion to rewriter for comparison criteria.

Mon Apr 20 23:09:22 EDT 2009

     [ https://jira.jboss.org/jira/browse/TEIID-252?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on TEIID-252 started by Steven Hawkins.

> Add constant cohersion to rewriter for comparison criteria.
> -----------------------------------------------------------
>
>                 Key: TEIID-252
>                 URL: https://jira.jboss.org/jira/browse/TEIID-252
>             Project: Teiid
>          Issue Type: Feature Request
>          Components: Query Engine
>    Affects Versions: 6.0.0
>            Reporter: Steven Hawkins
>            Assignee: Steven Hawkins
>            Priority: Minor
>             Fix For: 6.1.0
>
>   Original Estimate: 4 hours
>  Remaining Estimate: 4 hours
>
> From a recent discussion with Larry, it would be good for the rewriter to handle situations like:
> "convert(col, type1) = constant of type2" => "col = constant of type1", where type1 is something other than string.
> We already have resolver logic to do this and in many circumstance failing to apply the narroring conversion would indicate a failing comparison.

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