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https://issues.apache.org/jira/browse/FLINK-27013?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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luoyuxia updated FLINK-27013:
-----------------------------
Parent: FLINK-26360
Issue Type: Sub-task (was: Improvement)
> Hive dialect supports IS_DISTINCT_FROM
> --------------------------------------
>
> Key: FLINK-27013
> URL: https://issues.apache.org/jira/browse/FLINK-27013
> Project: Flink
> Issue Type: Sub-task
> Components: Connectors / Hive
> Reporter: luoyuxia
> Priority: Major
> Labels: pull-request-available
>
> It'll throw the exception with error message "Unsupported call: IS DISTINCT
> FROM(STRING, STRING) " with the following SQL in Hive dialect:
>
> {code:java}
> create table test(x string, y string);
> select x <=> y, (x <=> y) = false from test; {code}
>
> And I found the IS_NOT_DISTINCT_FROM is supported in
> ExprCodeGenerator.scala, but IS_ DISTINCT_FROM is not. The IS_ DISTINCT_FROM
> should also be implemented in ExprCodeGenerator.
>
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