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https://issues.apache.org/jira/browse/SPARK-36757?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17419386#comment-17419386
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Paul Deng commented on SPARK-36757:
-----------------------------------
Just adding that this behavior also occurs when called via scala without using
the `_jc` private property.
{code:bash}
scala> countDistinct("foo").toString()
res1: String = count(foo)
scala> countDistinct("foo")
res2: org.apache.spark.sql.Column = count(foo)
{code}
> countDistinct becomes count when converted to SQL string
> --------------------------------------------------------
>
> Key: SPARK-36757
> URL: https://issues.apache.org/jira/browse/SPARK-36757
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 3.1.1
> Reporter: Paul Deng
> Priority: Major
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> In pyspark=3.1.1
> {code:python}
> > F.countDistinct(F.col("bar"))
> Column<'count(bar)'>{code}
>
> In pyspark=2.4
> {code:python}
> > F.countDistinct(F.col("bar"))
> Column<b'count(DISTINCT foo)'>{code}
>
> This creates problems when trying to convert the pyspark function into SQL
> code to compose SQL queries via:
> {code:python}
> > F.countDistinct(F.col("bar"))._jc.toString()
> {code}
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