Fix `pokedex load` with empty tables.

diff --git a/pokedex/db/load.py b/pokedex/db/load.py
index b57d935..6a548b8 100644 (file)
--- a/pokedex/db/load.py
+++ b/pokedex/db/load.py
@@ -213,6 +213,8 @@ def load(session, tables=[], directory=None, drop_tables=False, verbose=False, s
 
         new_rows = []
         def insert_and_commit():
+            if not new_rows:
+                return
             session.connection().execute(insert_stmt, new_rows)
             session.commit()
             new_rows[:] = []