docs: explain this special case in comment

Signed-off-by: Ruihang Xia <waynestxia@gmail.com>
datafusion-contrib · Aug 7, 2024 · 0c7a579 · 0c7a579
1 parent 2b2c5c2
commit 0c7a579
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/array_decoder/mod.rs b/src/array_decoder/mod.rs
@@ -572,6 +572,8 @@ impl NaiveStripeDecoder {
             if remaining == 0 {
                 Ok(None)
             } else {
+                // In case of empty projection, we need to create a RecordBatch with `row_count` only
+                // to reflect the row number
                 Ok(Some(
                     RecordBatch::try_new_with_options(
                         Arc::clone(&self.schema_ref),