MS Access 2010 SQL排名前三的銷售額

Question

我有一個表格，包括年份，季度，團隊和價格。 它顯示了團隊的每一筆銷售。 我們在公司有10個團隊。 我想知道每年的每個季度，哪三支球隊的銷量最高。 那么我被困在哪里？ 此時，我將每個團隊每季度的總銷售額進行分組。 仍然缺少o只能獲得銷量最高的三支最佳球隊。 我到目前為止得到了這個：

SELECT 
    a1.year,
    a1.quarter,
    a1.team,
    sum(a1.price) as Total

FROM
    tbl_sales a1    

inner JOIN
    tbl_sales a2 
        ON a1.year = a2.year
            and a1.quarter = a2.quarter
            and a1.team = a2.team
            and a1.price = a2.price
     where
           some restrictions here
GROUP BY
    a1.year,
    a1.quarter,
    a1.team

有些東西告訴我，我很接近，只有一個帶有top函數的子查詢會有所幫助，但我無法弄明白。 任何幫助非常感謝:)非常感謝！

Answer 1

在MS Access中，您可以使用IN和TOP執行此操作：

select s.*
from tbl_sales as s
where s.team in (select top (3) s2.team
                 from tbl_sales as s2
                 where s2.year = s.year and s2.quarter = s.quarter
                 order by s2.price desc
                );

您可能需要向外部查詢和內部查詢添加限制，具體取決於它們的含義。

Answer 2

嘗試：

SELECT TOP 3
    a1.year,
    a1.quarter,
    a1.team,
    sum(a1.price) as Total

FROM
    tbl_sales a1    

inner JOIN
    tbl_sales a2 
        ON a1.year = a2.year
            and a1.quarter = a2.quarter
            and a1.team = a2.team
            and a1.price = a2.price
     where
           some restrictions here
GROUP BY
    a1.year,
    a1.quarter,
    a1.team

ORDER BY 
    sum(a1.price) DESC

編輯，嘗試以下內容，您可能需要其他條件以確保獲得正確的結果集，但這應該返回where子句中指定的每個季度的前3位，我不知道您為什么使用自聯接所以我把它留下了，但如果有必要可以加回來：

SELECT TOP 3
    a1.year,
    a1.quarter,
    a1.team,
    sum(a1.price) as Total

FROM
    tbl_sales a1

WHERE
     'some restrictions here'
     AND a1.quarter = 1 --(or however quarters are identified)
     AND a1.year = 2015 --(or however years are identified)

GROUP BY
    a1.year,
    a1.quarter,
    a1.team

ORDER BY 
    sum(a1.price) DESC

UNION ALL

SELECT TOP 3
    a2.year,
    a2.quarter,
    a2.team,
    sum(a2.price) as Total

FROM
    tbl_sales a2

WHERE
    'some restrictions here'
    AND a2.quarter = 2
    AND a2.year = 2015

GROUP BY
    a2.year,
    a2.quarter,
    a2.team

ORDER BY 
    sum(a2.price) DESC

UNION ALL

SELECT TOP 3
    a3.year,
    a3.quarter,
    a3.team,
    sum(a3.price) as Total

FROM
    tbl_sales a3

WHERE
    'some restrictions here'
    AND a3.quarter = 3
    AND a3.year = 2015

GROUP BY
    a3.year,
    a3.quarter,
    a3.team

ORDER BY 
    sum(a3.price) DESC

UNION ALL

SELECT TOP 3
    a1.year,
    a1.quarter,
    a1.team,
    sum(a1.price) as Total

FROM
    tbl_sales a4

WHERE
    'some restrictions here'
    AND a4.quarter = 4
    AND a4.year = 2015

GROUP BY
    a4.year,
    a4.quarter,
    a4.team

ORDER BY 
    sum(a4.price) DESC

正如你所看到的，除了where子句之外，表之間幾乎沒有區別，你不僅限於這4個表的聯合，它只是一個例子，但請記住，如果你需要覆蓋更多的季度你將需要添加更多要聯合的表。 這可能變得非常笨拙，因為它要求您隨着時間的推移不斷向工會添加表。