Hi, I need to flatten a nested dataframe and I' following this example: https://docs.databricks.com/spark/latest/spark-sql/complex-types.html
Just wondering:
1. how can I test for the existence of an item before retrieving it
Say test if "b" exists before adding that into my flat dataframe
events = jsonToDataFrame("""{ "a": { "b": 1,
"c": 2,
}}""")
2.
Does anyone know of any examples of how to do these tasks?
Thanks!
Zeming
