var queryParams = new DatabasesQueryParameters { Filter = null };

        var pages = await client.Databases.QueryAsync(dbKey, queryParams);
    
        foreach (var Page in pages.Results)
        {
          foreach (var property in Page.Properties.Where(x => x.Value.Type!=PropertyValueType.Title))
            {

                if(property.Value is RelationPropertyValue relationProperty)
                {
                    yield return string.Join(",", relationProperty.Relation.Select(x => x.Id.ToString()));
                }
                   
                yield return property.Key + " - " + property.Value.Id + " - " + property.Value.Type;
                            
            }
        }
        
    }`