[
https://issues.apache.org/jira/browse/IMPALA-9945?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18046358#comment-18046358
]
Raghav Jindal commented on IMPALA-9945:
---------------------------------------
[~tarmstrong] Is this issue still open ?
> Subquery inside some Expr subclasses in WHERE results in IllegalStateException
> ------------------------------------------------------------------------------
>
> Key: IMPALA-9945
> URL: https://issues.apache.org/jira/browse/IMPALA-9945
> Project: IMPALA
> Issue Type: Bug
> Components: Frontend
> Reporter: Tim Armstrong
> Priority: Major
> Labels: newbie, ramp-up
>
> {noformat}
> [localhost.EXAMPLE.COM:21000] default> explain select * from
> functional.alltypes t
> where nvl(exists(select id from functional.alltypesagg), false);
> Query: explain select * from functional.alltypes t
> where nvl(exists(select id from functional.alltypesagg), false)
> ERROR: IllegalStateException: Failed analysis after expr substitution.
> CAUSED BY: ClassCastException: org.apache.impala.analysis.SlotRef cannot be
> cast to org.apache.impala.analysis.Subquery
> [localhost.EXAMPLE.COM:21000] default> explain select * from
> functional.alltypes t
> where case when id % 2 = 0 then exists(select id from functional.alltypesagg)
> end;
> Query: explain select * from functional.alltypes t
> where case when id % 2 = 0 then exists(select id from functional.alltypesagg)
> end
> ERROR: IllegalStateException: Failed analysis after expr substitution.
> CAUSED BY: ClassCastException: org.apache.impala.analysis.SlotRef cannot be
> cast to org.apache.impala.analysis.Subquery
> {noformat}
> These predicates are not expected to be supported - since we don't support
> arbitrary subqueries in where - see IMPALA-5226 - but we should produce a
> more meaningful error, like
> {noformat}
> [localhost.EXAMPLE.COM:21000] default> explain select * from
> functional.alltypes t
> where cast((t.id IN (select id from functional.alltypesagg) or t.bool_col =
> false) as string) is not
> null;
> Query: explain select * from functional.alltypes t
> where cast((t.id IN (select id from functional.alltypesagg) or t.bool_col =
> false) as string) is not
> null
> ERROR: AnalysisException: Unsupported IS NULL predicate that contains a
> subquery: CAST((t.id IN (SEL
> ECT id FROM functional.alltypesagg) OR t.bool_col = FALSE) AS STRING) IS NOT
> NULL
> {noformat}
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
