ask for sql 0908

Question

Hello experts,

I have one table with two columns(ID and Duration).

The value of duration is one number around 10.

I would like to list remaining records when the total of previous records is 100 or more than 100.

Thanks

Answer 1

Hi @Davis ,

Welcome to Microsoft Q&A!

For this type of problem we recommend that you post CREATE TABLE statements for your tables together with INSERT statements with sample data, enough to illustrate all angles of the problem. We also need to see the expected result of the sample.

If we have 12 rows , and the total of first 10 rows is 100 or bigger than 100, need we still return current row?

If no, please refer below example and check whether it is helpful to you.

create table yourtable  
(id int,  
duration int)  
  
insert into yourtable values  
(1,11),  
(2,8),  
(3,9),  
(4,12),  
(5,14),  
(6,9),  
(7,13),  
(8,10),  
(9,12),  
(10,8),  
(11,10),  
(12,12),  
(13,11)  
  
select * from yourtable  
where id >(select min(id) from (select id,SUM(duration) OVER (ORDER BY ID ROWS UNBOUNDED PRECEDING) total from yourtable) a where total>=100)  

Output:

id	duration  
11	10  
12	12  
13	11  

Best regards,
Melissa

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Answer 2

;With cte As
(Select ID, Duration, Sum(Duration) Over(Order By ID Rows Between Unbounded Preceding And 1 Preceding) As LagRunningTotal
From YourTableName)
Select ID, Duration
From cte
Where LagRunningTotal >= 100
Order By ID;

Tom