1 files changed, 5 insertions, 0 deletions
diff --git a/lib/gitlab/database/median.rb b/lib/gitlab/database/median.rb
index 1444d25ebc7..08607c27c09 100644
--- a/lib/gitlab/database/median.rb
+++ b/lib/gitlab/database/median.rb
@@ -103,6 +103,11 @@ module Gitlab
         Arel.sql(%Q{EXTRACT(EPOCH FROM "#{arel_attribute.relation.name}"."#{arel_attribute.name}")})
       end
 
+      def extract_diff_epoch(diff)
+        return diff unless Gitlab::Database.postgresql?
+
+        Arel.sql(%Q{EXTRACT(EPOCH FROM (#{diff.to_sql}))})
+      end
       # Need to cast '0' to an INTERVAL before we can check if the interval is positive
       def zero_interval
         Arel::Nodes::NamedFunction.new("CAST", [Arel.sql("'0' AS INTERVAL")])