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From "Deneche A. Hakim (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-3647) Handle null as input to window function NTILE
Date Mon, 17 Aug 2015 22:43:45 GMT

    [ https://issues.apache.org/jira/browse/DRILL-3647?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14700364#comment-14700364
] 

Deneche A. Hakim commented on DRILL-3647:
-----------------------------------------

Calcite doesn't seem to allow passing NULL to NTILE.

[~jni] can you take a look at this and let us know if this is expected or if this should be
fixed.

> Handle null as input to window function NTILE 
> ----------------------------------------------
>
>                 Key: DRILL-3647
>                 URL: https://issues.apache.org/jira/browse/DRILL-3647
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Query Planning & Optimization
>    Affects Versions: 1.2.0
>         Environment: private-branch https://github.com/adeneche/incubator-drill/tree/new-window-funcs
>            Reporter: Khurram Faraaz
>            Assignee: Deneche A. Hakim
>              Labels: window_function
>             Fix For: 1.2.0
>
>
> We need to handle null as input to window functions. NTILE function must return null
as output when input is null.
> {code}
> 0: jdbc:drill:schema=dfs.tmp> select col7 , col0 , ntile(null) over(partition by col7
order by col0) lead_col0 from FEWRWSPQQ_101;
> Error: PARSE ERROR: From line 1, column 22 to line 1, column 37: Argument to function
'NTILE' must not be NULL
> [Error Id: e5e69582-8502-4a99-8ba1-dffdfb8ac028 on centos-04.qa.lab:31010] (state=,code=0)
> {code}
> {code}
> 0: jdbc:drill:schema=dfs.tmp> select col7 , col0 , lead(null) over(partition by col7
order by col0) lead_col0 from FEWRWSPQQ_101;
> Error: PARSE ERROR: From line 1, column 27 to line 1, column 30: Illegal use of 'NULL'
> [Error Id: 6824ca01-e3f1-4338-b4c8-5535e7a42e13 on centos-04.qa.lab:31010] (state=,code=0)
> {code}



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