1 files changed, 6 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb b/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb
index 55d3360070..29d85d82cb 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb
@@ -127,7 +127,12 @@ module ActiveRecord
           end
         end
 
-        value.to_s(:db)
+        result = value.to_s(:db)
+        if value.respond_to?(:usec) && value.usec > 0
+          "#{result}.#{sprintf("%06d", value.usec)}"
+        else
+          result
+        end
       end
 
       def prepare_binds_for_database(binds) # :nodoc: