From 5ae1c5b5ac3b4773b7a0186aef27e299464ff5c5 Mon Sep 17 00:00:00 2001
From: Jason <JasonW94@gmail.com>
Date: Mon, 2 Oct 2023 10:30:06 -0400
Subject: [PATCH] Check for empty tables in zoom poll results (#897)

Co-authored-by: Jason Walker <jason@indivisible.org>
---
 parsons/zoom/zoom.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/parsons/zoom/zoom.py b/parsons/zoom/zoom.py
index b9d9d4eed..7526d0192 100644
--- a/parsons/zoom/zoom.py
+++ b/parsons/zoom/zoom.py
@@ -151,6 +151,8 @@ def __process_poll_results(self, tbl: Table) -> Table:
         `Returns`:
             Parsons Table
         """
+        if tbl.num_rows == 0:
+            return tbl
 
         # Add surrogate key
         tbl.add_column("poll_taker_id", lambda _: str(uuid.uuid4()))