计数行与总数

Question

From tbl Department, I am trying to write a stored procedure to display output as shown below where I can find the count from each row based on following conditions:

1. Total = 100
2. Total >100 and <=200
3. Total >200 and <=300

4. Total >300

   set @select = 'select count(*) as Orders, sum (tbl.Expenses) as Total from tbl group by tbl.Department'

So, how can I dynamically get the output for 4 conditions as shown above based on my @select statement.

Answer 1

I think you just want conditional aggregation:

select sum(case when total = 100 then 1 else 0 end) as condition1,
       sum(case when total > 100 and total <= 200 then 1 else 0 end) as condition2,
       sum(case when total > 200 and total <= 300 then 1 else 0 end) as condition3,
       sum(case when total > 300 then 1 else 0 end) as condition4
from department d;

Answer 2

希望对您有所帮助，选择总计，Sum（Case when total = 100 then NumberOfOrders_Created end ）为“Condition1”，Sum（Case when total > 100 and total <= 200 then NumberOfOrders_Created end ）为“Condition2”，Sum （当总数 > 200 且总数 <= 300 然后 NumberOfOrders_Created 结束时）作为“条件 3”，总和（当总数 > 200 和总数 <= 300 然后 NumberOfOrders_Created 结束时）作为“条件4”，来自部门，其中 Orders_date 在 '2013-01 之间-01 00:00:00' 和 '2013-12-31 00:00:00' group by 2 order by 1 Desc