Question

如果可能的话，我正在努力解决这个问题：

我想通过SUM添加行的所有值，例如：

这将是SUM()，等于9292。

然后，我想运行一个查询，选择等于百分比的特定行。所以说我有79.612％，我想选择匹配这个百分比的行。

有什么想法吗？

Answer 1

根据提供的信息解答您的问题，但正如我们的评论所示，我们需要更多有关百分比来源的信息。

Select * from yourTable -- The table you want to match the percentage table
where SomePercentage = select (sum(value) / 
(select sum(value) from yourTable2)) * 100  -- Total value used as upper bracket of percentage
from yourTable2 where someValue like '123' -- Whatever you want to base the percentage off

编辑以匹配传入百分比的更新要求，我们得到最接近的值？到图。

Select top 1 * from yourTable where
value <= (Select (Sum(somevalues) * @In_Percentage)/100 from yourTable2) 
order by value desc

Answer 2

请使用以下代码。它与SQL Server 2012一起正常工作。

DECLARE @Table TABLE (Value int)
INSERT INTO @Table
(Value)
VALUES
(120),(6239),(2810),(123)

Select t.Value FROM @Table t
GROUP BY t.[Value]
HAVING (100*t.value)/(Select sum(t.Value) FROM @Table t) >79.612

Answer 3

其他解决方案的替代方案：

DECLARE @VarTable TABLE (Value int);
INSERT INTO @VarTable (Value) VALUES (120),(6239),(2810),(123);

SELECT Value
FROM (
    select t.Value, round(100*cast(t.value as float)/s.totalvalue, 3) as perc
    from @VarTable t
    join (Select sum(Value) as totalvalue FROM @VarTable) s on (1=1)
) Q2
where perc between 60.0 and 80.0;

67.144是这4个值的最高百分比：

select top 1 t.Value, s.totalvalue, round(100*cast(t.value as float)/s.totalvalue,3) as perc
from @VarTable t
join (Select sum(Value) as totalvalue FROM @VarTable) s on (1=1)
order by perc desc;

SQL - 以某个％获取行

3 个答案: