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https://issues.apache.org/jira/browse/SPARK-30392?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17005924#comment-17005924
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Ankit Raj Boudh commented on SPARK-30392:
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[~avanname] , changes are already present in below branches.
branch-2.3 :-
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[https://github.com/apache/spark/blob/75cc3b2da9ee0b51ecf0f13169f2b634e36a60c4/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/datetimeExpressions.scala#L1438]
branch-2.4 :-
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[https://github.com/apache/spark/blob/db32408f2a9295e4053dd3a1ebf8ae013557ff96/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/datetimeExpressions.scala#L1552]
but here it's not updated
[https://spark.apache.org/docs/2.3.0/api/sql/index.html]
cc [~srowen] ,[@cloud-fan|https://github.com/cloud-fan] and [@HyukjinKwon ,
please check.|https://github.com/HyukjinKwon]
> Documentation for the date_trunc function is incorrect
> --
>
> Key: SPARK-30392
> URL: https://issues.apache.org/jira/browse/SPARK-30392
> Project: Spark
> Issue Type: Documentation
> Components: SQL
>Affects Versions: 2.4.3
>Reporter: Ashley
>Priority: Minor
> Attachments: Date_trunc.PNG
>
>
> The documentation for the date_trunc function includes a few sample SELECT
> statements to show how the function works:
> [https://spark.apache.org/docs/2.3.0/api/sql/#date_trunc]
> In the sample SELECT statements, the inputs to the function are swapped:
> *The docs show:* SELECT date_trunc('2015-03-05T09:32:05.359', 'YEAR');
> *The docs _should_ show:* SELECT date_trunc('YEAR',
> '2015-03-05T09:32:05.359');
>
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