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https://issues.apache.org/jira/browse/DRILL-4942?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Serhii Harnyk reassigned DRILL-4942:
------------------------------------
Assignee: Serhii Harnyk
> incorrect result - case when (not null is null) then true else false end
> -------------------------------------------------------------------------
>
> Key: DRILL-4942
> URL: https://issues.apache.org/jira/browse/DRILL-4942
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Flow
> Affects Versions: 1.9.0
> Reporter: Khurram Faraaz
> Assignee: Serhii Harnyk
>
> Drill's result is different from that of Calcite and Postgres result.
> Postgres 9.3 results
> {noformat}
> postgres=# select (case when (not null is null) then true else false end)
> from (values(1)) foo;
> case
> ------
> f
> (1 row)
> {noformat}
> Calcite release 1.8.0 too returns false
> {noformat}
> 0: jdbc:calcite:model=target/test-classes/mod> select (case when (not null is
> null) then true else false end) from (values(1));
> +--------+
> | EXPR$0 |
> +--------+
> | false |
> +--------+
> 1 row selected (1.271 seconds)
> {noformat}
> Drill 1.9.0 git commit ID: 4edabe7a, returns true
> {noformat}
> 0: jdbc:drill:schema=dfs.tmp> select (case when (not null is null) then true
> else false end) from (values(1));
> +---------+
> | EXPR$0 |
> +---------+
> | true |
> +---------+
> 1 row selected (0.096 seconds)
> {noformat}
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