[
https://issues.apache.org/jira/browse/SPARK-29650?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Xiao Li resolved SPARK-29650.
-----------------------------
Resolution: Invalid
> Discard a NULL constant in LIMIT
> --------------------------------
>
> Key: SPARK-29650
> URL: https://issues.apache.org/jira/browse/SPARK-29650
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Takeshi Yamamuro
> Priority: Major
>
> In PostgreSQL, a NULL constant is accepted in LIMIT and its just ignored.
> But, in spark, it throws an exception below;
> {code:java}
> select * from int8_tbl limit (case when random() < 0.5 then bigint(null) end);
> org.apache.spark.sql.AnalysisException
> The limit expression must evaluate to a constant value, but got CASE WHEN
> (`_nondeterministic` < CAST(0.5BD AS DOUBLE)) THEN CAST(NULL AS BIGINT) END;
> {code}
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org
For additional commands, e-mail: issues-h...@spark.apache.org
