如何在数据库中保存此数据结构？

Question

如何在数据库中保存此数据结构？

{
  amount => [{year => total_cost}],
  amount => [{year => total_cost}],
  amount => [{year => total_cost}]
}

Answer 1

查看PostgreSQL's hstore功能。它是为这种情况而建立的。