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From iyerr3 <>
Subject [GitHub] incubator-madlib pull request: Recursive_partitioning: Fix random ...
Date Fri, 25 Mar 2016 21:45:26 GMT
Github user iyerr3 commented on a diff in the pull request:
    --- Diff: src/ports/postgres/modules/recursive_partitioning/decision_tree.py_in ---
    @@ -669,6 +669,8 @@ def _get_n_and_deplist(training_table_name, dependent_variable, filter_null):
         r = plpy.execute(sql)[0]
    +    if r['n_rows'] is None:
    +        return None, None
    --- End diff --
    It's better to return `0` instead of the `None` for `n_rows`. The _assert in the calling
function could be changed to `n_rows > 0`

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