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https://issues.apache.org/jira/browse/IMPALA-13695?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18031909#comment-18031909
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ASF subversion and git services commented on IMPALA-13695:
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Commit 420e357b9586b45fbf4d08265fa57dd616989377 in impala's branch
refs/heads/master from Steve Carlin
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=420e357b9 ]
IMPALA-13695: Calcite planner: fix for ndv with 2 args
The NDV function was crashing when called with the "scale" arg. This
requires special processing which exists in FunctionCallExpr.
The validation for this is now done in ImpalaNdvFunction
and the special calculation is done within ImpalaAggRel
This also fixes ndv for varchar types. The aggregation call
within CoerceNodes was not differentiating between varchar
and string. A cast to string function is needed in order
to run the ndv function on a varchar column.
Change-Id: I82419f77e043e9975865a042ffb8db75a26931f7
Reviewed-on: http://gerrit.cloudera.org:8080/23513
Reviewed-by: Riza Suminto <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
> Calcite planner: Ndv with second argument causing server to crash
> -----------------------------------------------------------------
>
> Key: IMPALA-13695
> URL: https://issues.apache.org/jira/browse/IMPALA-13695
> Project: IMPALA
> Issue Type: Sub-task
> Reporter: Steve Carlin
> Priority: Major
>
> There is special logic in FunctionCallExpr that needs to be implemented
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