[
https://issues.apache.org/jira/browse/SPARK-17099?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Herman van Hovell resolved SPARK-17099.
---------------------------------------
Resolution: Fixed
Assignee: Xiao Li
Fix Version/s: 2.1.0
2.0.1
> Incorrect result when HAVING clause is added to group by query
> --------------------------------------------------------------
>
> Key: SPARK-17099
> URL: https://issues.apache.org/jira/browse/SPARK-17099
> Project: Spark
> Issue Type: Bug
> Affects Versions: 2.1.0
> Reporter: Josh Rosen
> Assignee: Xiao Li
> Priority: Blocker
> Fix For: 2.0.1, 2.1.0
>
>
> Random query generation uncovered the following query which returns incorrect
> results when run on Spark SQL. This wasn't the original query uncovered by
> the generator, since I performed a bit of minimization to try to make it more
> understandable.
> With the following tables:
> {code}
> val t1 = sc.parallelize(Seq(-234, 145, 367, 975, 298)).toDF("int_col_5")
> val t2 = sc.parallelize(
> Seq(
> (-769, -244),
> (-800, -409),
> (940, 86),
> (-507, 304),
> (-367, 158))
> ).toDF("int_col_2", "int_col_5")
> t1.registerTempTable("t1")
> t2.registerTempTable("t2")
> {code}
> Run
> {code}
> SELECT
> (SUM(COALESCE(t1.int_col_5, t2.int_col_2))),
> ((COALESCE(t1.int_col_5, t2.int_col_2)) * 2)
> FROM t1
> RIGHT JOIN t2
> ON (t2.int_col_2) = (t1.int_col_5)
> GROUP BY GREATEST(COALESCE(t2.int_col_5, 109), COALESCE(t1.int_col_5, -449)),
> COALESCE(t1.int_col_5, t2.int_col_2)
> HAVING (SUM(COALESCE(t1.int_col_5, t2.int_col_2))) > ((COALESCE(t1.int_col_5,
> t2.int_col_2)) * 2)
> {code}
> In Spark SQL, this returns an empty result set, whereas Postgres returns four
> rows. However, if I omit the {{HAVING}} clause I see that the group's rows
> are being incorrectly filtered by the {{HAVING}} clause:
> {code}
> +--------------------------------------+---------------------------------------+--+
> | sum(coalesce(int_col_5, int_col_2)) | (coalesce(int_col_5, int_col_2) * 2)
> |
> +--------------------------------------+---------------------------------------+--+
> | -507 | -1014
> |
> | 940 | 1880
> |
> | -769 | -1538
> |
> | -367 | -734
> |
> | -800 | -1600
> |
> +--------------------------------------+---------------------------------------+--+
> {code}
> Based on this, the output after adding the {{HAVING}} should contain four
> rows, not zero.
> I'm not sure how to further shrink this in a straightforward way, so I'm
> opening this bug to get help in triaging further.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org
For additional commands, e-mail: issues-h...@spark.apache.org
