Corrects issue where engine.execute raised exception when given empty list. Fixes #1175.

2 files changed, 8 insertions, 1 deletions

diff --git a/lib/sqlalchemy/engine/base.py b/lib/sqlalchemy/engine/base.py
index 85457edb4..1e72bc14b 100644
--- a/lib/sqlalchemy/engine/base.py
+++ b/lib/sqlalchemy/engine/base.py
@@ -873,7 +873,7 @@ class Connection(Connectable):
                 return [{}]
         elif len(multiparams) == 1:
             if isinstance(multiparams[0], (list, tuple)):
-                if isinstance(multiparams[0][0], (list, tuple, dict)):
+                if not multiparams[0] or isinstance(multiparams[0][0], (list, tuple, dict)):
                     return multiparams[0]
                 else:
                     return [multiparams[0]]
diff --git a/test/engine/execute.py b/test/engine/execute.py
index 80f4e390c..e449af9ad 100644
--- a/test/engine/execute.py
+++ b/test/engine/execute.py
@@ -78,6 +78,13 @@ class ExecuteTest(TestBase):
             except tsa.exc.DBAPIError:
                 assert True
 
+    def test_empty_insert(self):
+        try:
+            result = testing.db.execute(users.insert(), [])
+            assert [] == list(result)
+        except:
+            assert False
+
 class ProxyConnectionTest(TestBase):
     @testing.fails_on('firebird') # Data type unknown
     def test_proxy(self):