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https://issues.apache.org/jira/browse/SPARK-38341?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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davon.cao updated SPARK-38341:
------------------------------
    Description: 
Step to reproduce:

Version of spark sql: 3.2.1(latest  version in maven repository)

Run sql:

spark.sql("""SELECT ADD_MONTHS(last_day('2020-06-30'), -1)""").toPandas()

expect: 2020-05-31

actual: 2020-05-30 

 

Version of spark sql: 2.4.3 (/)

spark.sql("""SELECT ADD_MONTHS(last_day('2020-06-30'), -1)""").toPandas()

expect: 2020-05-31 

actual: 2020-05-31 

 

  was:
Step to reproduce:

Version of spark sql: 3.2.1(latest  version in maven repository)

Run sql:

spark.sql("""SELECT ADD_MONTHS(last_day('2020-06-30'), -1)""").toPandas()

expect: 2020-05-31

actual: 2020-05-30 

 

Version of spark sql: 2.4.3

spark.sql("""SELECT ADD_MONTHS(last_day('2020-06-30'), -1)""").toPandas()

expect: 2020-05-31 

actual: 2020-05-31

 


> Spark sql - Function of add_ Months returns an incorrect date
> -------------------------------------------------------------
>
>                 Key: SPARK-38341
>                 URL: https://issues.apache.org/jira/browse/SPARK-38341
>             Project: Spark
>          Issue Type: Bug
>          Components: Spark Submit
>    Affects Versions: 3.2.1
>            Reporter: davon.cao
>            Priority: Major
>
> Step to reproduce:
> Version of spark sql: 3.2.1(latest  version in maven repository)
> Run sql:
> spark.sql("""SELECT ADD_MONTHS(last_day('2020-06-30'), -1)""").toPandas()
> expect: 2020-05-31
> actual: 2020-05-30 
>  
> Version of spark sql: 2.4.3 (/)
> spark.sql("""SELECT ADD_MONTHS(last_day('2020-06-30'), -1)""").toPandas()
> expect: 2020-05-31 
> actual: 2020-05-31 
>  



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