如何返回给定两条sql记录的相交年数和月数
我有一个名为Employee的表。其中有三列名为开始日期、结束日期和员工姓名 我正在编写一个存储过程,它接受两个EmployeesEmployeeName的开始日期和结束日期,如果他们一起工作,则返回true,还返回他们一起工作的年数和月数 所以我希望查询返回john和kashif一起工作的年数,如果他们一起工作,bool值为true或false 我该怎么做 求求你,外面的任何人都可以帮助我,所以,请帮我 谢谢检查此查询:如何返回给定两条sql记录的相交年数和月数,sql,sql-server,tsql,sql-server-2012,Sql,Sql Server,Tsql,Sql Server 2012,我有一个名为Employee的表。其中有三列名为开始日期、结束日期和员工姓名 我正在编写一个存储过程,它接受两个EmployeesEmployeeName的开始日期和结束日期,如果他们一起工作,则返回true,还返回他们一起工作的年数和月数 所以我希望查询返回john和kashif一起工作的年数,如果他们一起工作,bool值为true或false 我该怎么做 求求你,外面的任何人都可以帮助我,所以,请帮我 谢谢检查此查询: DECLARE @Start_Date DATE ='2012/08/0
DECLARE @Start_Date DATE ='2012/08/01'
DECLARE @End_Date DATE ='2014/08/01'
SELECT T1.ProfileName,
T1.ProfileName,
DATEDIFF(YEAR,CASE WHEN T1.START_DATE > T2.START_DATE THEN T1.START_DATE ELSE T2.START_DATE End,CASE WHEN T1.End_DATE > T2.End_DATE THEN T2.End_DATE ELSE T1.End_DATE End ) Years
FROM Tbl T1,Tbl T2
WHERE T1.Start_Date >= @Start_Date
AND T2.Start_Date >= @Start_Date
AND T1.End_Date <= @End_Date
AND T2.End_Date <= @End_Date
存储过程
员工在该表上可以有多行,即多个开始日期和结束日期,还是始终只有一个日期范围?在给定情况下,Brian Demilia员工只能有一行
DECLARE @emp1 VARCHAR(10) = 'John'
DECLARE @emp2 VARCHAR(10) = 'Kashif'
SELECT CASE WHEN EXISTS (SELECT 1 FROM Emp
WHERE empID = @emp2
AND StartDate >= t.StartDate
AND EndDate <= t.EndDate)
THEN 1 ELSE 0 END [Has Worked together]
,CASE WHEN EXISTS (SELECT 1 FROM Emp
WHERE empID = @emp2
AND StartDate >= t.StartDate
AND EndDate <= t.EndDate)
THEN DATEDIFF(DAY, CASE WHEN StartDate <= t.StartDate THEN StartDate ELSE t.StartDate END
, CASE WHEN EndDate >= t.EndDate THEN EndDate ELSE t.EndDate END)
ELSE 0 END [Days worked together]
FROM Emp t
WHERE empID = @emp1
Has Worked together Days worked together
1 30
CREATE PROCEDURE dbo.myProc
@Employee1 VARCHAR(20),
@Employee2 VARCHAR(20),
@Worked_Together BIT OUTPUT,
@Days_Worked INT OUTPUT
AS
BEGIN
SET NOCOUNT ON;
SELECT @Worked_Together
= CASE WHEN EXISTS (SELECT 1 FROM Emp
WHERE empID = @Employee2
AND StartDate >= t.StartDate
AND EndDate <= t.EndDate)
THEN 1 ELSE 0 END
,@Days_Worked
= CASE WHEN EXISTS (SELECT 1 FROM Emp
WHERE empID = @Employee2
AND StartDate >= t.StartDate
AND EndDate <= t.EndDate)
THEN DATEDIFF(DAY, CASE WHEN StartDate <= t.StartDate THEN StartDate ELSE t.StartDate END
, CASE WHEN EndDate >= t.EndDate THEN EndDate ELSE t.EndDate END)
ELSE 0 END
FROM Emp t
WHERE empID = @Employee1
END