SQL AdventureWorks按城市按性別劃分的員工數

我想按性別統計城市數量，SQL AdventureWorks按城市按性別劃分的員工數

City GenderFCount GenderMCount 
Redmond 10    20

這裏是我的查詢獲取城市和性別AdventureWorks數據庫

select Gender,City from HumanResources.Employee as t1 
    inner join HumanResources.EmployeeAddress as t2 
    on t1.EmployeeID = t2.EmployeeID 
    inner join Person.Address as t3 
    on t2.AddressID = t3.AddressID

如果有可能可以告訴你在很多方面的解決方案，像「PIVOT」，由SQL函數（UDF），存儲程序或其他方式。

感謝

來源

2010-08-22 qods

對不起，我想根據城市來計算性別 – qods 2010-08-22 10:05:44

建議：如果您使用的是表格縮寫的別名，可能會使讀取更容易，例如HumanResources.Employee的hre。我相信有很多人以不同的方式做它。但對我而言，它有助於保持混亂程度。此外，在select語句中使用這些別名 - 即使在技術上不需要時 - 可以提醒您從哪個表中提取它。 – DaveX 2016-04-20 15:28:42

這裏是PIVOT查詢，你可以轉儲，在存儲過程或UDF的UDF

CREATE FUNCTION fnPivot() 
RETURNS TABLE 

AS 
RETURN (
select City, F as GenderFCount, M as GenderMCount 
from(
select Gender,City 
from HumanResources.Employee as t1 
    inner join HumanResources.EmployeeAddress as t2 
    on t1.EmployeeID = t2.EmployeeID 
    inner join Person.Address as t3 
    on t2.AddressID = t3.AddressID 
    ) AS pivTemp 
PIVOT 
( count(Gender) 
    FOR Gender IN ([F],[M]) 
) AS pivTable 
) 
GO

現在

select City, F as GenderFCount, M as GenderMCount 
from(
select Gender,City 
from HumanResources.Employee as t1 
    inner join HumanResources.EmployeeAddress as t2 
    on t1.EmployeeID = t2.EmployeeID 
    inner join Person.Address as t3 
    on t2.AddressID = t3.AddressID 
    ) AS pivTemp 
PIVOT 
( count(Gender) 
    FOR Gender IN ([F],[M]) 
) AS pivTable

比如你可以這樣調用

SELECT * FROM dbo.fnPivot()

來源

2010-08-22 10:30:56 SQLMenace

這裏使用的是一個嵌入在程序中的CTE。現在，我正在使用AdventureWorks 2012，因爲這就是我的全部。但是這個概念是一樣的。

USE [AdventureWorks] 
    GO 
    /****** Object: StoredProcedure [dbo].[GenderCountbyCity] Script Date: 4/20/2016 9:07:04 AM ******/ 
    SET ANSI_NULLS ON 
    GO 
    SET QUOTED_IDENTIFIER ON 
    GO 
    ALTER PROCEDURE [dbo].[GenderCountbyCity] 

    AS 

    BEGIN 

    ;WITH EmpF 
      AS (
        SELECT pa.City, hre.Gender, COUNT(hre.Gender) AS CountF 
          FROM Person.BusinessEntityAddress pbea 
            JOIN Person.Address pa 
              ON pbea.AddressID = pa.AddressID 
            JOIN HumanResources.Employee hre 
              ON pbea.BusinessEntityID = hre.BusinessEntityID 
          WHERE hre.Gender = 'F' 
          GROUP BY pa.City, hre.Gender 
        ), 

    EmpM 
      AS (
        SELECT pa.City, hre.Gender, COUNT(hre.Gender) AS CountM 
          FROM Person.BusinessEntityAddress pbea 
            JOIN Person.Address pa 
              ON pbea.AddressID = pa.AddressID 
            JOIN HumanResources.Employee hre 
              ON pbea.BusinessEntityID = hre.BusinessEntityID 
          WHERE hre.Gender = 'M' 
          GROUP BY pa.City, hre.Gender 
        ) 

    SELECT COALESCE(EmpF.City,EmpM.City) AS City, COALESCE(EmpF.CountF,0) AS GenderFCount, COALESCE(EmpM.CountM,0) AS GenderMCount 
      FROM EmpF 
        FULL JOIN EmpM 
          ON EmpF.City = EmpM.City 
      ORDER BY COALESCE(EmpF.City,EmpM.City) 

    END

如果你想創建一個過程而不是改變一個過程，只需將「ALTER」改爲「CREATE」即可。然後刷新你的存儲過程列表，你可以從那裏修改它。之後，「CREATE」將自動顯示「ALTER」，如果成功，則按F5時將保存所有更改。然後你可以輸入EXEC dbo.GenderCountbyCity（或者你的名字是什麼）[或者右鍵點擊程序並選擇執行存儲過程]，你將得到結果。

來源

2016-04-20 15:14:51 DaveX

SQL AdventureWorks按城市按性別劃分的員工數

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