1 files changed, 8 insertions, 0 deletions
diff --git a/lib/gitlab/analytics/cycle_analytics/stage_events/stage_event.rb b/lib/gitlab/analytics/cycle_analytics/stage_events/stage_event.rb
index 0c75a141c3c..79738747e71 100644
--- a/lib/gitlab/analytics/cycle_analytics/stage_events/stage_event.rb
+++ b/lib/gitlab/analytics/cycle_analytics/stage_events/stage_event.rb
@@ -7,6 +7,7 @@ module Gitlab
         # Base class for expressing an event that can be used for a stage.
         class StageEvent
           include Gitlab::CycleAnalytics::MetricsTables
+          extend Gitlab::Utils::Override
 
           delegate :label_based?, to: :class
 
@@ -32,6 +33,13 @@ module Gitlab
             raise NotImplementedError
           end
 
+          # List of columns that are referenced in the `timestamp_projection` expression
+          # Example timestamp projection: COALESCE(issue_metrics.created_at, issue_metrics.updated_at)
+          # Expected column list: issue_metrics.created_at, issue_metrics.updated_at
+          def column_list
+            []
+          end
+
           # Optionally a StageEvent may apply additional filtering or join other tables on the base query.
           def apply_query_customization(query)
             query