1 files changed, 19 insertions, 0 deletions
diff --git a/db/migrate/20200504200709_add_index_on_fingerprint_and_target_type_to_events.rb b/db/migrate/20200504200709_add_index_on_fingerprint_and_target_type_to_events.rb
new file mode 100644
index 00000000000..9b06d593300
--- /dev/null
+++ b/db/migrate/20200504200709_add_index_on_fingerprint_and_target_type_to_events.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class AddIndexOnFingerprintAndTargetTypeToEvents < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  KEYS = [:target_type, :target_id, :fingerprint]
+
+  def up
+    add_concurrent_index :events, KEYS, using: :btree, unique: true
+  end
+
+  def down
+    remove_concurrent_index :events, KEYS
+  end
+end