fix(api): nan is not properly handled for athena connections (#37071)

superset/dataframe.py

@@ -41,6 +41,9 @@ def df_to_records(dframe: pd.DataFrame) -> list[dict[str, Any]]:
     """
     Convert a DataFrame to a set of records.
 
+    NaN values are converted to None for JSON compatibility.
+    This handles division by zero and other operations that produce NaN.
+
     :param dframe: the DataFrame to convert
     :returns: a list of dictionaries reflecting each single row of the DataFrame
     """
@@ -52,6 +55,8 @@ def df_to_records(dframe: pd.DataFrame) -> list[dict[str, Any]]:
 
     for record in records:
         for key in record:
-            record[key] = _convert_big_integers(record[key])
+            record[key] = (
+                None if pd.isna(record[key]) else _convert_big_integers(record[key])
+            )
 
     return records