diff --git a/ibis/backends/snowflake/__init__.py b/ibis/backends/snowflake/__init__.py
index dc30f6632ab93..ac6d0926b51ed 100644
--- a/ibis/backends/snowflake/__init__.py
+++ b/ibis/backends/snowflake/__init__.py
@@ -75,12 +75,11 @@ class SnowflakeExprTranslator(AlchemyExprTranslator):
 
 
 class SnowflakeTableSetFormatter(_AlchemyTableSetFormatter):
-    def _format_in_memory_table(self, op, ref_op, translator):
+    def _format_in_memory_table(self, _, ref_op, translator):
         columns = translator._schema_to_sqlalchemy_columns(ref_op.schema)
         rows = list(ref_op.data.to_frame().itertuples(index=False))
         pos_columns = [
-            sa.column(f"${idx}")
-            for idx, name in enumerate(ref_op.schema.names, start=1)
+            sa.column(f"${idx}") for idx in range(1, len(ref_op.schema.names) + 1)
         ]
         return sa.select(*pos_columns).select_from(sa.values(*columns).data(rows))