How to write loop in MySQL between two values? - mysql

Question

I have table:
T1
| Name | score |
| John | 1 |
|Anton | 2 |
|George| 8 |
|Peter | 1 |
| Tom | 2 |
I need to loop over table between two values.
I need to create a procedure or a function that for given value1 and value2 prints out (in alphabetical order) names that have in total(score) more than value1 and less than value2.
EXAMPLE
For value1= 5, and value2=12.
First i need to sort names alphabetically.
| Name | score |
|Anton | 2 |
|George| 8 |
| John | 1 |
|Piter | 1 |
| Tom | 2 |
Since value1 is 5, and value2 is 12, i need to loop until sum(score) will be more than 5, and less than 12. In this case result should be:
| Name |
|Anton |
|George|
| John |
because in total they got more than 5 and less than 12 score.

Answer 1

1)discard scores > 12 2) workout cumulative sum 3) work out max cumulative sum in the required range 4) select those there cumulative sum is < max cumulative sum
DROP table if exists t;
create table t
( Name varchar(10), score int);
insert into t values
('Anton' , 12),
('George', 12),
('John' , 1),
('Piter' , 1),
('Tom' , 2),
('bilal' , 5)
;
with
cte as
(select t.*,
sum(score) over (order by name) cumsum
from t
where score < 12) ,
cte1 as
(select max(cumsum) maxcumsum from cte where cumsum < 12 and cumsum > 5),
cte2 as
(select cte.*,cte1.maxcumsum
from cte
cross join cte1)
select * from cte2
where maxcumsum > 5 and cumsum <= maxcumsum
order by name;
+-------+-------+--------+-----------+
| Name | score | cumsum | maxcumsum |
+-------+-------+--------+-----------+
| bilal | 5 | 5 | 9 |
| John | 1 | 6 | 9 |
| Piter | 1 | 7 | 9 |
| Tom | 2 | 9 | 9 |
+-------+-------+--------+-----------+
4 rows in set (0.022 sec)