1 files changed, 24 insertions, 0 deletions
diff --git a/db/post_migrate/20230619005223_change_unconfirmed_created_at_index_on_users.rb b/db/post_migrate/20230619005223_change_unconfirmed_created_at_index_on_users.rb
new file mode 100644
index 00000000000..5b9b4e36512
--- /dev/null
+++ b/db/post_migrate/20230619005223_change_unconfirmed_created_at_index_on_users.rb
@@ -0,0 +1,24 @@
+# frozen_string_literal: true
+
+class ChangeUnconfirmedCreatedAtIndexOnUsers < Gitlab::Database::Migration[2.1]
+  disable_ddl_transaction!
+
+  OLD_INDEX_NAME = 'index_users_on_unconfirmed_and_created_at_for_active_humans'
+  NEW_INDEX_NAME = 'index_users_on_unconfirmed_created_at_active_type_sign_in_count'
+
+  def up
+    add_concurrent_index :users, [:created_at, :id],
+      name: NEW_INDEX_NAME,
+      where: "confirmed_at IS NULL AND state = 'active' AND user_type IN (0) AND sign_in_count = 0"
+
+    remove_concurrent_index_by_name :users, OLD_INDEX_NAME
+  end
+
+  def down
+    add_concurrent_index :users, [:created_at, :id],
+      name: OLD_INDEX_NAME,
+      where: "confirmed_at IS NULL AND state = 'active' AND user_type IN (0)"
+
+    remove_concurrent_index_by_name :users, NEW_INDEX_NAME
+  end
+end