[teiid-issues] [JBoss JIRA] (TEIID-4646) Add engine support for lead/lag aggregate functions

[Steven Hawkins (JIRA)]

    [ https://issues.jboss.org/browse/TEIID-4646?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13394005#comment-13394005 ] 

Steven Hawkins commented on TEIID-4646:
---------------------------------------

[~blafond] This change does not alter the javacc grammar, but it does introduce new resolver and validation logic to ensure that the functions match the expected usage pattern, so this is marked as affecting the grammar.

> Add engine support for lead/lag aggregate functions
> ---------------------------------------------------
>
>                 Key: TEIID-4646
>                 URL: https://issues.jboss.org/browse/TEIID-4646
>             Project: Teiid
>          Issue Type: Enhancement
>          Components: Grammar, JDBC Connector, Misc. Connectors, Query Engine
>            Reporter: Steven Hawkins
>            Assignee: Steven Hawkins
>             Fix For: 9.3
>
>
> Lead/lag and first_value/last_value analytical function support should be added to the engine with appropriate pushdown support.



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