2 files changed, 10 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
index f120a50f8f..b01ef89dfc 100755
--- a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb
@@ -38,6 +38,12 @@ module ActiveRecord
       def supports_migrations?
         false
       end
+      
+      # Does this adapter support using DISTINCT within COUNT?  This is +true+
+      # for all adapters except sqlite.
+      def supports_count_distinct?
+        true
+      end
 
       # Should primary key values be selected from their corresponding
       # sequence before the insert statement?  If true, next_sequence_value
diff --git a/activerecord/lib/active_record/connection_adapters/sqlite_adapter.rb b/activerecord/lib/active_record/connection_adapters/sqlite_adapter.rb
index 44011a09fd..579bc471d2 100644
--- a/activerecord/lib/active_record/connection_adapters/sqlite_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/sqlite_adapter.rb
@@ -98,6 +98,10 @@ module ActiveRecord
       def supports_migrations? #:nodoc:
         true
       end
+      
+      def supports_count_distinct? #:nodoc:
+        false
+      end
 
       def native_database_types #:nodoc:
         {