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https://issues.apache.org/jira/browse/DRILL-3596?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Khurram Faraaz closed DRILL-3596.
---------------------------------
Verified.
{code}
0: jdbc:drill:schema=dfs.tmp> select lead(col1,1,1) OVER(ORDER BY col1) from
FEWRWSPQQ_101;
Error: UNSUPPORTED_OPERATION ERROR: Function LEAD only supports (<value
expression>) or (<value expression>, 1)
See Apache DRILL JIRA: DRILL-3596
[Error Id: 2d3cd780-a4a3-4e6d-a48c-f5d1c169f336 on centos-04.qa.lab:31010]
(state=,code=0)
{code}
> Allow only (<expression>) or (<expression>, 1) for LEAD and LAG window
> functions as input parameters
> ----------------------------------------------------------------------------------------------------
>
> Key: DRILL-3596
> URL: https://issues.apache.org/jira/browse/DRILL-3596
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Relational Operators
> Affects Versions: 1.2.0
> Reporter: Khurram Faraaz
> Assignee: Deneche A. Hakim
> Labels: window_function
> Fix For: 1.2.0
>
>
> We need to disable the third input parameter in LEAD and LAG window
> functions. We should support this syntax.
> LEAD(<expression>) ,or LEAD(<expression>,1)
> LAG(<expression>), or LAG(<expression>,1)
> In both the functions above, the second parameter is the default offset
> value, use of any other value must he handled and reported to user as error.
> Use of a third input parameter to both the functions must be disallowed.
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