Add Prevent Sharing Groups Column to Namespace Settings Table

db/migrate/20210527185542_add_prevent_sharing_groups_outside_hierarchy_to_namespace_settings.rb

+# frozen_string_literal: true
+
+class AddPreventSharingGroupsOutsideHierarchyToNamespaceSettings < ActiveRecord::Migration[6.0]
+  include Gitlab::Database::MigrationHelpers
+
+  def up
+    with_lock_retries do
+      add_column :namespace_settings, :prevent_sharing_groups_outside_hierarchy, :boolean, null: false, default: false
+    end
+  end
+
+  def down
+    with_lock_retries do
+      remove_column :namespace_settings, :prevent_sharing_groups_outside_hierarchy
+    end
+  end
+end

db/schema_migrations/20210527185542

+56efe7709f07ffe198b4a2068c7e4b1ba8507a878cbc9ac3b1b30a334cbd83ca
\ No newline at end of file

db/structure.sql

@@ -14954,6 +14954,7 @@ CREATE TABLE namespace_settings (
     delayed_project_removal boolean,
     resource_access_token_creation_allowed boolean DEFAULT true NOT NULL,
     lock_delayed_project_removal boolean DEFAULT false NOT NULL,
+    prevent_sharing_groups_outside_hierarchy boolean DEFAULT false NOT NULL,
     CONSTRAINT check_0ba93c78c7 CHECK ((char_length(default_branch_name) <= 255))
 );