1 files changed, 5 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
index 1ed761b126..a098c02829 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
@@ -279,6 +279,11 @@ module ActiveRecord
         sql << " DEFAULT #{quote(options[:default], options[:column])}" unless options[:default].nil?
         sql << " NOT NULL" if options[:null] == false
       end
+
+      # SELECT DISTINCT clause for a given set of columns.  PostgreSQL overrides this for custom DISTINCT syntax.
+      def distinct(columns, *order_columns)
+        "DISTINCT #{columns}"
+      end
     end
   end
 end