基于类型获取每日计数和金额的 SQl 查询答案

【问题标题】：SQl query to get Daily count and amount based on type基于类型获取每日计数和金额的 SQl 查询
【发布时间】：2021-07-17 09:34:00
【问题描述】：

考虑一个表格“客户”，下面是列

CreationDatetime
CustType
Amount

在 CustType 列中只能有 2 个值 1 0r 2。

现在，我想编写 oracle sql 查询，在该查询中，我将根据唯一的客户类型获取每日用户数量和当天添加的数量，

CreationDate	Total Count of CustType 1	Total Amount of CustType 1	Total Count of CustType 2	Total Amount of CustType 2
1/1/2021	100	200,000	80	100,000
2/1/2021	20	40,000	10	10,000

我正在使用以下查询，但它提供的每日总计数不基于客户类型。请指教。

SELECT Trunc(CreationDatetime),Count(1),SUM(amount)
FROM Customer
group by Trunc(CreationDatetime)

【问题讨论】：

标签： sql oracle aggregate

【解决方案1】：

你可以试试这个：

SELECT      TRUNC(CreationDatetime) AS Date, CustType AS CustomerType, COUNT(*) AS DailyCount, SUM(Amount) AS AmountForTheDay
FROM        Customer
GROUP BY    TRUNC(CreationDatetime), CustType

【讨论】：

【解决方案2】：

看起来像 sum + case 组合：

select trunc(creationdatetime) datum,
  sum(case when custtype = 1 then 1      else 0 end) count_of_type_1,
  sum(case when custtype = 1 then amount else 0 end) amount_of_type_1,
  --
  sum(case when custtype = 2 then 1      else 0 end) count_of_type_2,
  sum(case when custtype = 2 then amount else 0 end) amount_of_type_2
from customer
group by trunc(creationdatetime)

【讨论】：

【解决方案3】：

这应该会得到你想要的输出：

SELECT 
   Trunc(CreationDatetime),
   SUM(CASE WHEN CustType=1 THEN 1 END) as "Total Count of CustType 1",
   SUM(CASE WHEN CustTYpe=1 THEN amount END) as "Total Amount of CustType 1",
   SUM(CASE WHEN CustType=2 THEN 1 END) as "Total Count of CustType 2",
   SUM(CASE WHEN CustTYpe=2 THEN amount END) as "Total Amount of CustType 2"
FROM Customer
group by Trunc(CreationDatetime)

【讨论】：

【解决方案4】：

您可以为此使用pivot：

select
  trunc(creationdatetime) as dt
  , CUST_TYPE1_TOTAL_COUNT
  , CUST_TYPE1_TOTAL_AMOUNT
  , CUST_TYPE2_TOTAL_COUNT
  , CUST_TYPE2_TOTAL_AMOUNT
from t
pivot (
  count(*) as total_count
  , sum(amount) as total_amount
  
  for custtype in (
    1 as cust_type1
    , 2 as cust_type2
  )
)
DT | CUST_TYPE1_TOTAL_COUNT | CUST_TYPE1_TOTAL_AMOUNT | CUST_TYPE2_TOTAL_COUNT | CUST_TYPE2_TOTAL_AMOUNT :-------- | ---------------------: | ----------------------: | ---------------------: | ----------------------: 21 年 7 月 19 日 | 1 | 70 | 0 | 空 21 年 7 月 17 日 | 2 | 400 | 1 | 200 21 年 7 月 18 日 | 2 | 110 | 2 | 70

db小提琴here

【讨论】：