Question

"id"    "type"  "parent"    "country"   "votes" "perCent"
"4177"  "3"     "4176"      "US"        "105"   "0"// total of all the below
"4178"  "10"    "4177"      "US"        "15"    "0"
"4179"  "10"    "4177"      "US"        "50"    "0"
"4180"  "10"    "4177"      "US"        "25"    "0"
"4181"  "10"    "4177"      "US"        "5"     "0"
"4182"  "10"    "4177"      "US"        "10"    "0"

在MySQL中，是否可以选择拥有10％选票的行。在此处，id = 4177拥有该类别的总票数。基于此，是否可以选择type = 10 and parent = 4177和哪些10% or more投票的人？

Answer 1

SELECT 
 * 
FROM myTable v
WHERE 
 v.Type = 10
 AND  0.1 < v.Votes / (SELECT MAX(m.votes) FROM myTable m WHERE m.Type = 3 AND m.Id = t.Parent)

Answer 2

检查SQLFiddle

SELECT *
FROM Votestable v
WHERE v.votes > (SELECT
                   votes
                 FROM Votestable v1
                 WHERE v1.id = v.parent) * 0.1

Answer 3

试试这个： -

select id from table where type =10 and votes>=(votes/100)*10;

Answer 4

由于你提到了105票，

select * , ((votes * 100) / 105) as percent
from votesTable
where ((votes * 100) / 105) > 10.0 and type=10 and parent = 4177

如何在这里选择10％的选票行？

4 个答案: