1 files changed, 0 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/column.rb b/activerecord/lib/active_record/connection_adapters/postgresql/column.rb
index bfa03fa136..3ad1911a28 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql/column.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql/column.rb
@@ -8,7 +8,6 @@ module ActiveRecord
       def serial?
         return unless default_function
 
-        table_name = @table_name || '(?<table_name>.+)'
         %r{\Anextval\('"?#{table_name}_#{name}_seq"?'::regclass\)\z} === default_function
       end
     end