[teiid-issues] [JBoss JIRA] Commented: (TEIID-345) Consolidate ifnull, nvl, and coalesce support

Mon Mar 9 12:08:22 EDT 2009

    [ https://jira.jboss.org/jira/browse/TEIID-345?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12456234#action_12456234 ] 

Steven Hawkins commented on TEIID-345:
--------------------------------------

ifnull is now the only push-down function.  coalesce full support will be added when we support var-args.

> Consolidate ifnull, nvl, and coalesce support
> ---------------------------------------------
>
>                 Key: TEIID-345
>                 URL: https://jira.jboss.org/jira/browse/TEIID-345
>             Project: Teiid
>          Issue Type: Feature Request
>          Components: Connector API, Query Engine
>    Affects Versions: 6.0.0
>            Reporter: Steven Hawkins
>            Assignee: Steven Hawkins
>            Priority: Minor
>             Fix For: 6.1.0
>
>   Original Estimate: 1 day
>  Remaining Estimate: 1 day
>
> We should use ifnull to represent the 2 arg function form and coalesce to represent the n arg (not available until var arg support).  The rewriter should rewrite nvl as ifnull and connectors should express support for ifnull and coalesce only.

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