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Remove duplicate records using pyspark

sanjay
Valued Contributor II

Hi,

I am trying to remove duplicate records from pyspark dataframe and keep the latest one. But somehow df.dropDuplicates["id"] keeps the first one instead of latest. One of the option is to use pandas drop_duplicates, Is there any solution in pyspark.

Thanks,

Sanjay

1 ACCEPTED SOLUTION

Accepted Solutions

szymon_dybczak
Contributor III

Hi @sanjay ,

You can write window function that will rank your rows and then filter rows based on that rank.

Take a look on below stackoverflow thread: 

https://stackoverflow.com/questions/63343958/how-to-drop-duplicates-but-keep-first-in-pyspark-datafr...

 

View solution in original post

1 REPLY 1

szymon_dybczak
Contributor III

Hi @sanjay ,

You can write window function that will rank your rows and then filter rows based on that rank.

Take a look on below stackoverflow thread: 

https://stackoverflow.com/questions/63343958/how-to-drop-duplicates-but-keep-first-in-pyspark-datafr...

 

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