org.apache.spark.sql.AnalysisException: cannot resolve 'explode(`mycol`)' due to data type mismatch: input to function explode should be array or map type, not struct line 1 pos 0;

Hello,

If you exploding and got above error then it means you dont need to explode it as it is not type array or map.

You can simply access values as:

df_expanded = df.withColumn("prop1", expr("mycol.prop1"))

HTH