lelandroling commented on issue #1571:
URL: 
https://github.com/apache/iceberg-python/issues/1571#issuecomment-2648667278

   @kevinjqliu The newKeys variable is filled with a few keys in my example, so 
for sake of the use case:
   
   `let newKeys = ['columnA', 'columnB', 'columnC']
   `
   The values array simply has the values of each row for columnA, columnB, and 
columnC. These columns are only the key values of the table, so I'm effectively 
making conditions to say overwrite the row when it meets columnA = rowValueA 
AND columnB = rowvalueB, etc...
   
   @corleyma Fair enough. We can use the MERGE INTO process. I was somewhat 
married to the idea of getting away from the pyspark dependency, but it does 
work. Thanks for the answer.


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