andrei-ionescu commented on a change in pull request #1392:
URL: https://github.com/apache/arrow-datafusion/pull/1392#discussion_r762176794
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File path: datafusion/src/datasource/mod.rs
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@@ -198,3 +200,27 @@ fn get_col_stats(
})
.collect()
}
+
+fn flatten_schema(schema: &Schema) -> Vec<&Field> {
Review comment:
@Dandandan Simplifying it is not a solution as we need to read/calculate
the statistics for the nested fields too. We will be using the flattened fields
when calling `summarize_min_max` function.
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