[GitHub] [superset] ganczarek commented on a change in pull request #17470: fix(presto): expand data with null item

[GitBox <gi...@apache.org>]

ganczarek commented on a change in pull request #17470:
URL: https://github.com/apache/superset/pull/17470#discussion_r752082637



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File path: superset/db_engine_specs/presto.py
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@@ -872,7 +872,7 @@ def expand_data(  # pylint: disable=too-many-locals
                     values = row.get(name) or []
                     if isinstance(values, str):
                         row[name] = values = cast(List[Any], destringify(values))
-                    for value, col in zip(values, expanded):
+                    for value, col in zip(values or [], expanded):

Review comment:
       You're right. Thank you. I changed it as per your first suggestion and force pushed the updated commit. I had to split the statement into two because of line length limit.




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