Fix parsing foreign key constraints with multiple dots.

diff --git a/alembic/operations.py b/alembic/operations.py
index f3150395d6fd592e336c5a4850280d8a0b020fc0..ece624868ea3d419418821ca5079f77e0334e305 100644 (file)
--- a/alembic/operations.py
+++ b/alembic/operations.py
@@ -109,9 +109,9 @@ class Operations(object):
 
         """
         if isinstance(fk._colspec, basestring):
-            table_key, cname = fk._colspec.split('.')
+            table_key, cname = fk._colspec.rsplit('.', 1)
             if '.' in table_key:
-                tokens = tname.split('.')
+                tokens = table_key.split('.')
                 sname = ".".join(tokens[0:-1])
                 tname = tokens[-1]
             else: