sql中按组划分的频率表

Question

简单查询

SELECT  [Dt]
      ,[CustomerName]
      ,[ItemRelation]
      ,[DocumentNum]
      ,[DocumentYear]
      ,[CustomerType]
  FROM [Action].[dbo].[promo_data]

如何按组计算频率表

[CustomerName]+[ItemRelation]+[DocumentNum]+[DocumentYear]+[CustomerType]

为了更清楚，作为我想要的输出

 [CustomerName] [ItemRelation]  [DocumentNum]   [DocumentYear]  [CustomerType]  count
           dix  11111              123             2017              FC    23
          5ive  2222               333              2018             OPT    123

我试过这样做

  select count (distinct [CustomerName]
      ,[ItemRelation]
      ,[DocumentNum]
      ,[DocumentYear]
      ,[CustomerType]) from [Action].[dbo].[promo_data]

但出现错误

Message 102, level 15, state 1, line 11
Invalid syntax near the construction ",".

如何按组计算频率表？

Answer 1

尝试以下方法：

SELECT [CustomerName]
      ,[ItemRelation]
      ,[DocumentNum]
      ,[DocumentYear]
      ,[CustomerType]
      ,Count(*) as cnt
  FROM [Action].[dbo].[promo_data]
GROUP BY
      [CustomerName]
      ,[ItemRelation]
      ,[DocumentNum]
      ,[DocumentYear]
      ,[CustomerType]