diff --git a/instrumentation/trilogy/lib/opentelemetry/instrumentation/trilogy/patches/client.rb b/instrumentation/trilogy/lib/opentelemetry/instrumentation/trilogy/patches/client.rb
index 8f15dd89d..f62ddda42 100644
--- a/instrumentation/trilogy/lib/opentelemetry/instrumentation/trilogy/patches/client.rb
+++ b/instrumentation/trilogy/lib/opentelemetry/instrumentation/trilogy/patches/client.rb
@@ -49,7 +49,7 @@ def query(sql)
                 OpenTelemetry::Instrumentation::Trilogy.attributes
               ),
               kind: :client
-            ) do |_span, context|
+            ) do |span, context|
               if propagator && sql.frozen?
                 sql = +sql
                 propagator.inject(sql, context: context)
@@ -58,7 +58,12 @@ def query(sql)
                 propagator.inject(sql, context: context)
               end
 
-              super
+              result = super
+
+              span.set_attribute('db.response.returned_rows', result.count)
+              span.set_attribute('db.response.affected_rows', result.affected_rows) unless result.affected_rows.nil?
+
+              result
             end
           end
 
diff --git a/instrumentation/trilogy/test/opentelemetry/instrumentation/trilogy/instrumentation_test.rb b/instrumentation/trilogy/test/opentelemetry/instrumentation/trilogy/instrumentation_test.rb
index 350ee5f83..3e9c150f1 100644
--- a/instrumentation/trilogy/test/opentelemetry/instrumentation/trilogy/instrumentation_test.rb
+++ b/instrumentation/trilogy/test/opentelemetry/instrumentation/trilogy/instrumentation_test.rb
@@ -164,6 +164,12 @@
         _(span.attributes[OpenTelemetry::SemanticConventions::Trace::DB_SYSTEM]).must_equal 'mysql'
         _(span.attributes[OpenTelemetry::SemanticConventions::Trace::DB_STATEMENT]).must_equal 'DESELECT ?'
       end
+
+      it 'includes row count' do
+        client.query('SELECT 1')
+
+        _(span.attributes['db.response.returned_rows']).must_equal(1)
+      end
     end
 
     describe 'when connecting' do