comphead commented on code in PR #1860:
URL: https://github.com/apache/datafusion-comet/pull/1860#discussion_r2133038738
##########
native/core/src/parquet/parquet_support.rs:
##########
@@ -239,14 +242,24 @@ fn cast_struct_to_struct(
parquet_options,
)?;
cast_fields.push(cast_field);
+ field_overlap = true;
} else {
cast_fields.push(new_null_array(to_fields[i].data_type(),
array.len()));
}
}
+
+ // If target schema doesn't contain any of the existing fields
+ // mark such a column in array as NULL
+ let nulls = if field_overlap {
Review Comment:
this is an actual fix
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