1 files changed, 20 insertions, 0 deletions
diff --git a/db/post_migrate/20211006174114_add_namespace_index_on_type_sync.rb b/db/post_migrate/20211006174114_add_namespace_index_on_type_sync.rb
new file mode 100644
index 00000000000..0185e4cbc5e
--- /dev/null
+++ b/db/post_migrate/20211006174114_add_namespace_index_on_type_sync.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+class AddNamespaceIndexOnTypeSync < Gitlab::Database::Migration[1.0]
+  FULL_INDEX_NAME = 'index_namespaces_on_type_and_id'
+  PARTIAL_INDEX_NAME = 'index_namespaces_on_type_and_id_partial'
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :namespaces, [:type, :id], name: FULL_INDEX_NAME
+
+    remove_concurrent_index_by_name :namespaces, name: PARTIAL_INDEX_NAME
+  end
+
+  def down
+    add_concurrent_index(:namespaces, [:type, :id], where: 'type IS NOT NULL', name: PARTIAL_INDEX_NAME)
+
+    remove_concurrent_index_by_name :namespaces, name: FULL_INDEX_NAME
+  end
+end