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https://issues.apache.org/jira/browse/SPARK-23985?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16625448#comment-16625448
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Ohad Raviv edited comment on SPARK-23985 at 9/24/18 7:15 AM:
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{quote}You should move where("a>'1'") before withColumn:
{quote}
this is exactly the issue I've opened.
the Optimizer should understand this on its own.
I understand my original mistake in the example, and have changed it. try now.
was (Author: uzadude):
{quote}You should move where("a>'1'") before withColumn:{quote}
this is exactly the issue I've opened.
the Optimizer should understand this on its own.
> predicate push down doesn't work with simple compound partition spec
> --------------------------------------------------------------------
>
> Key: SPARK-23985
> URL: https://issues.apache.org/jira/browse/SPARK-23985
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.4.0
> Reporter: Ohad Raviv
> Priority: Minor
>
> while predicate push down works with this query:
> {code:sql}
> select * from (
> select *, row_number() over (partition by a order by b) from t1
> )z
> where a>1
> {code}
> it dowsn't work with:
> {code:sql}
> select * from (
> select *, row_number() over (partition by concat(a,'lit') order by b) from
> t1
> )z
> where a>1
> {code}
>
> I added a test to FilterPushdownSuite which I think recreates the problem:
> {code}
> test("Window: predicate push down -- ohad") {
> val winExpr = windowExpr(count('b),
> windowSpec(Concat('a :: Nil) :: Nil, 'b.asc :: Nil, UnspecifiedFrame))
> val originalQuery = testRelation.select('a, 'b, 'c,
> winExpr.as('window)).where('a > 1)
> val correctAnswer = testRelation
> .where('a > 1).select('a, 'b, 'c)
> .window(winExpr.as('window) :: Nil, 'a :: Nil, 'b.asc :: Nil)
> .select('a, 'b, 'c, 'window).analyze
> comparePlans(Optimize.execute(originalQuery.analyze), correctAnswer)
> }
> {code}
> will try to create a PR with a correction
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