1 files changed, 15 insertions, 0 deletions
diff --git a/db/post_migrate/20220323130000_add_temp_index_on_null_project_namespace_ids.rb b/db/post_migrate/20220323130000_add_temp_index_on_null_project_namespace_ids.rb
new file mode 100644
index 00000000000..e73993065b0
--- /dev/null
+++ b/db/post_migrate/20220323130000_add_temp_index_on_null_project_namespace_ids.rb
@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+class AddTempIndexOnNullProjectNamespaceIds < Gitlab::Database::Migration[1.0]
+  TMP_INDEX_FOR_NULL_PROJECT_NAMESPACE_ID = 'tmp_index_for_null_project_namespace_id'
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :projects, :id, name: TMP_INDEX_FOR_NULL_PROJECT_NAMESPACE_ID, where: 'project_namespace_id IS NULL'
+  end
+
+  def down
+    remove_concurrent_index_by_name :projects, name: TMP_INDEX_FOR_NULL_PROJECT_NAMESPACE_ID
+  end
+end