5>...Select 5-1>选择列,5-2>distinct 1>…From 表 2>…Where 条件 3>…Group by 列 4>…Having 筛选条件 6>…Order by 列 7>...Top 转载于:https://www.cnblogs.com/chay1227/archive/2013/03/26/2983091.html