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https://issues.apache.org/jira/browse/IMPALA-14127?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17979893#comment-17979893
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Fang-Yu Rao commented on IMPALA-14127:
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We found that "{{SELECT last_value(tinyint_col) IGNORE NULLS OVER (ORDER BY
tinyint_col ASC) FROM functional_parquet.alltypesagg WHERE id < 5}}" is
supported already so we may need to revise Calcite's
[Parser.jj|https://github.com/apache/impala/blob/master/java/calcite-planner/src/main/codegen/templates/Parser.jj].
> Support IGNORE NULLS for functions
> ----------------------------------
>
> Key: IMPALA-14127
> URL: https://issues.apache.org/jira/browse/IMPALA-14127
> Project: IMPALA
> Issue Type: Sub-task
> Reporter: Fang-Yu Rao
> Assignee: Fang-Yu Rao
> Priority: Major
>
> Currently the following query that has "{{{}IGNORE NULLS{}}}" as part of a
> function parameter is not supported by the Calcite planner in Impala. It
> would be good to support it.
> {code:java}
> SELECT last_value(tinyint_col IGNORE NULLS) OVER (ORDER BY tinyint_col ASC)
> FROM functional_parquet.alltypesagg WHERE id < 5
> {code}
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