getting the 25% sum of qty

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i have table x where value is
id desc cost
1 xx 10
2 xx 11
15 xx 11
3 xx 12
4 xx 13
5 xx 14
6 xx 14
14 xx 14
7 xx 15
8 xx 16
9 xx 18
10 xx 19
11 xx 20
12 xx 21
13 xx 23

the total cost of all the item is 231. the 25% from the cost is 57.7 and i want that get the item were the total cost of all item is close to 57.7
example output
id desc cost
1 xx 10
2 xx 11
15 xx 11
3 xx 12
4 xx 13
57

how to achieve this in sql?

Posted 11-Nov-15 16:27pm

Member 12089550

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Tomas Takac 12-Nov-15 2:01am

What vendor? What version? Update your tags!

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Member 12089550 · Answer 1 · 2015-11-11T21:58:00

i have now solve my own problem

this is my code for future use

SQL

select id, desc, cost from
(select *, SUM(cost) over (order by cost desc)totalcost from TableX) t WHERE totalcost <=(select sum(cost) from tableX)*0.25

how the code work?
its simple by adding new column where adding the cost to totalcost
sample:

id	desc	cost	totalcost
1	xx	10	10
2	xx	11	21
15	xx	11	32
3	xx	12	44
4	xx	13	57
5	xx	14	71
6	xx	14	85
14	xx	14	99
7	xx	15	114
8	xx	16	130
9	xx	18	148
10	xx	19	167
11	xx	20	187
12	xx	21	208
13	xx	23	231

then selecting only the match to my condition
sorry for poor explanation.