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Posted to issues@drill.apache.org by "Victoria Markman (JIRA)" <ji...@apache.org> on 2015/04/29 02:14:06 UTC

[jira] [Commented] (DRILL-2215) COALESCE function needs to be documented

    [ https://issues.apache.org/jira/browse/DRILL-2215?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14518410#comment-14518410 ] 

Victoria Markman commented on DRILL-2215:
-----------------------------------------

Verified fixed.

> COALESCE function needs to be documented
> ----------------------------------------
>
>                 Key: DRILL-2215
>                 URL: https://issues.apache.org/jira/browse/DRILL-2215
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Documentation
>    Affects Versions: 0.8.0
>            Reporter: Victoria Markman
>            Assignee: Kristine Hahn
>
> COALESCE function returns the first non-null expression in the list. If all expressions evaluate to null, then the COALESCE function will return null.
> COALESCE( expr1, expr2, ... expr_n )
> expr1 to expr_n are the expressions to test for non-null values.
> Expressions have to be of the same type.



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