[teiid-issues] [JBoss JIRA] (TEIID-1323) Add support for pushdown of non-literal procedure parameter expressions.
Steven Hawkins (JIRA)
jira-events at lists.jboss.org
Mon Jul 8 09:39:21 EDT 2013
[ https://issues.jboss.org/browse/TEIID-1323?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Steven Hawkins resolved TEIID-1323.
-----------------------------------
Resolution: Partially Completed
Sources (such as SQL Server) and individual procedures (JDBC direct execution assumes ? parameter sql that requires literal binding) expect only literal parameters. We cannot generally push non-literals unless we add a capability and possibly extension metadata on procedures - alternatively all procedure handling on sources that do support non-literal arguments would need modified.
At this point it seems sufficient to just allow this at a translator language level and mark the issue as partially completed. This can be revisited if critical for performance or if it's the only way to address a particular case.
> Add support for pushdown of non-literal procedure parameter expressions.
> ------------------------------------------------------------------------
>
> Key: TEIID-1323
> URL: https://issues.jboss.org/browse/TEIID-1323
> Project: Teiid
> Issue Type: Feature Request
> Components: Query Engine
> Affects Versions: 7.2
> Reporter: Steven Hawkins
> Assignee: Steven Hawkins
> Fix For: 8.5
>
> Attachments: proc_params.patch
>
>
> We are forcing all push-down procedure arguments to be literals (for simplicity), when all expressions should be allowed.
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