ํฐ์คํ ๋ฆฌ ๋ทฐ
MS-SQL
ํฌ์ธํธ ์ ๋ฆฝ ๋ง์ดํ ์ ์์ 5% ํฌ์ธํธํฉ๊ณ, ์ธ์ ๊ตฌํ๊ธฐ
๐ฉท ์ ๐งก 2012. 7. 6. 15:44728x90
SMALL
declare @grade int
set @grade = 5
select t.aa, sum(t.ํฌ์ธํธ), count(t.์์ด๋)
from(
SELECT
top 5 percent
a.์์ด๋, left(convert(varchar, a.์์ฑ์ผ, 121), 7) aa , sum(ํฌ์ธํธ) ํฌ์ธํธ, count(distinct a.์์ด๋) cc FROM ํฌ์ธํธ๋ด์ญํ
์ด๋ธ a
join ํ์ํ๋
์ ๋ณดํ
์ด๋ธ b on (a.์์ด๋ = b.์์ด๋)
where left(convert(varchar, a.์์ฑ์ผ, 121), 7) = '2012-07'
and a.ํฌ์ธํธ > 0 and b.Grade = @grade
group by a.์์ด๋, left(convert(varchar, a.์์ฑ์ผ, 121), 7)
order by ํฌ์ธํธ desc
) t
group by t.aa
๊ณ ๊ธํจ์๋ฅผ ์ผ์ด์ผ ํ๋๋ฐ, ์์ง๊ฐ ์๋์ Pass
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