1 files changed, 18 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/schema_migration.rb b/activerecord/lib/active_record/schema_migration.rb
index fe47db10f0..20e3cbb1f6 100644
--- a/activerecord/lib/active_record/schema_migration.rb
+++ b/activerecord/lib/active_record/schema_migration.rb
@@ -8,6 +8,24 @@ module ActiveRecord
       Base.table_name_prefix + 'schema_migrations' + Base.table_name_suffix
     end
 
+    def self.create_table
+      unless connection.table_exists?(table_name)
+        connection.create_table(table_name, :id => false) do |t|
+          t.column :version, :string, :null => false
+        end
+        connection.add_index table_name, :version, :unique => true,
+          :name => "#{Base.table_name_prefix}unique_schema_migrations#{Base.table_name_suffix}"
+      end
+    end
+
+    def self.drop_table
+      if connection.table_exists?(table_name)
+        connection.remove_index table_name, :version, :unique => true,
+          :name => "#{Base.table_name_prefix}unique_schema_migrations#{Base.table_name_suffix}"
+        connection.drop_table(table_name)
+      end
+    end
+
     def version
       super.to_i
     end