3

我的 SQL 查询中有一个场景是我必须找出具有给定日期但多年的婴儿记录假设我的选择日期是 = 01/Jan/2014 到 31/Jan/2014

我有另一个参数是年份，它要求我随机选择以前（1~3 岁）出生的婴儿的数据假设如果我当前选择的日期是 2014 年并且我的年份变量的值为 2，那么

我必须将婴儿的数据分别带到当年以及比当前日期少一年的时间等等以下是我的给定场景

--------------------------------------------
--  BABIES_TABLE
ID |    Name         |  Age |   DOB         |
--------------------------------------------
1           JKL         3       21/Jan/2012
2           DEF         2       09/Jan/2013
3           ABC         1       04/Jan/2014
4           XYZ         1       02/Feb/2014

-- Date Range [01/Jan/2014 - 31/Jan/2014]
-- Year = 2
---------------------------------------------
ID     |    Name    |   Age |   DOB         |
---------------------------------------------
3           ABC         1       04/Jan/2014
2           DEF         2       09/Jan/2013



-- Date Range [01/Jan/2014 - 31/Jan/2014]
-- Year = 3
---------------------------------------------
ID     |    Name    |   Age |   DOB         |
---------------------------------------------
3           ABC         1       04/Jan/2014
2           DEF         2       09/Jan/2013
1           JKL         3       21/Jan/2012

下面是我的 SQl 查询，它不明确并且有错误。我尝试过单日期比较，它很好但是当我添加OR条件时，它给了我错误

--MY SQL Query is Below

DECLARE @startDate AS DATETIME
DECLARE @enddate AS DATETIME
DECLARE @y AS INT
SET @startDate='2012-10-12'
SET @enddate='2012-10-20'
SET @y=2

SELECT * FROM BABIES_TABLE
WHERE 
        CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) >= CASE            
            --If entered Year = 1
            WHEN @y = 1 THEN        
            (@startDate)                                     
            --If entered Year = 2
            WHEN @y = 2 THEN
                  CASE
                  (@startDate)
                  END                  
            OR
                  CASE
                  YEAR(@startDate-1)
                  END            

            WHEN @y = 3 THEN
                  CASE
                  (@startDate)
                  END          
            OR
                  CASE
                  YEAR(@startDate-1)
                  END
            OR
                  CASE
                  YEAR(@startDate-2)
                  END
        END
    END
  AND
        CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) <= CASE
            WHEN @y = 1 THEN        
            (@enddate)                                     

            WHEN @y = 2 THEN
                  CASE
                  (@enddate)
                  END                  
            OR
                  CASE
                  YEAR(@enddate-1)
                  END            

            WHEN @y = 3 THEN
                CASE
                (@enddate)
                END          
            OR
                CASE
                YEAR(@enddate-1)
                END
            OR
                CASE
                YEAR(@enddate-2)
                END
        END
    END
4

3 回答 3

4

这是我达到了我想要的结果，但我想在 Where 中使用 Case 是可能的。

---------------------------------------------

ID |    Name         |  Age |   DOB         |
--------------------------------------------

1   Abid                 6  2008-01-01
2   Zahid                6  2008-01-10
3   Laila                5  2009-01-15
4   Ali                  5  2010-01-26
5   Kali                 4  2011-01-19
6   Sali                 3  2012-01-08
7   Brone                2  2013-01-11
8   Dilche               2  2013-01-29
9   Alpechino            3  2012-08-20

这是我的存储过程。

--MY SQL Query is Below
CREATE PROCEDURE BabyUnionData
@Year AS INT,
@Start_Date as varchar(30),
@End_Date as Varchar(30)
AS
BEGIN


DECLARE @startDate AS DATETIME
DECLARE @enddate AS DATETIME
DECLARE @y AS INT
SET @startDate=@Start_Date
SET @enddate=@End_Date
--SELECt * FROM BABIES_TABLE
PRINT 'For One Year'
SET @y=@Year

IF @y = 1       
    BEGIN
    PRINT 'For One Year'
        SELECT * FROM BABIES_TABLE
        WHERE 
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) >= @startDate
            AND
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) <= @enddate
    END
ELSE IF @y = 2  
    BEGIN
    PRINT 'For Two Years'
        SELECT * FROM BABIES_TABLE
        WHERE 
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) >= @startDate
            AND
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) <= @enddate
        UNION
        SELECT * FROM BABIES_TABLE
        WHERE 
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) >= DATEADD(Year,-1,@startDate)
            AND
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) <= DATEADD(Year,-1,@enddate)
    END
    ELSE IF @y = 3
    BEGIN
        PRINT 'For Three Years'
        SELECT * FROM BABIES_TABLE
        WHERE 
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) >= @startDate
            AND
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) <= @enddate
        UNION
        SELECT * FROM BABIES_TABLE
        WHERE 
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) >= DATEADD(Year,-1,@startDate)
            AND
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) <= DATEADD(Year,-1,@enddate)
        UNION
        SELECT * FROM BABIES_TABLE
        WHERE 
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) >= DATEADD(Year,-2,@startDate)
            AND
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) <= DATEADD(Year,-2,@enddate)
    END
    ELSE IF @y = 4
    BEGIN
    PRINT 'For Four Years'
        SELECT * FROM BABIES_TABLE
        WHERE 
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) >= @startDate
            AND
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) <= @enddate
        UNION
        SELECT * FROM BABIES_TABLE
        WHERE 
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) >= DATEADD(Year,-1,@startDate)
            AND
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) <= DATEADD(Year,-1,@enddate)
        UNION
        SELECT * FROM BABIES_TABLE
        WHERE 
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) >= DATEADD(Year,-2,@startDate)
            AND
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) <= DATEADD(Year,-2,@enddate)
        UNION
        SELECT * FROM BABIES_TABLE
        WHERE 
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) >= DATEADD(Year,-3,@startDate)
            AND
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) <= DATEADD(Year,-3,@enddate)
    END
    ELSE IF @y = 5
    BEGIN
    PRINT 'For Five Years'
        SELECT * FROM BABIES_TABLE
        WHERE 
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) >= @startDate
            AND
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) <= @enddate
        UNION
        SELECT * FROM BABIES_TABLE
        WHERE 
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) >= DATEADD(Year,-1,@startDate)
            AND
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) <= DATEADD(Year,-1,@enddate)
        UNION
        SELECT * FROM BABIES_TABLE
        WHERE 
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) >= DATEADD(Year,-2,@startDate)
            AND
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) <= DATEADD(Year,-2,@enddate)
        UNION
        SELECT * FROM BABIES_TABLE
        WHERE 
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) >= DATEADD(Year,-3,@startDate)
            AND
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) <= DATEADD(Year,-3,@enddate)
        UNION
        SELECT * FROM BABIES_TABLE
        WHERE 
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) >= DATEADD(Year,-4,@startDate)
            AND
            CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) <= DATEADD(Year,-4,@enddate)
    END
END

--这里是StoredProcedure的使用

Exec BabyUnionData 5,'01-01-2014','01-31-2014'
于 2014-02-24T05:36:31.277 回答
0

我有与 Vittore 相同的解决方案，然后想，问题是我没有按照我的理解遵循您的要求。当今天开始日期结束日期与上一年相同时为 1

这是我有一个不雅的解决方案

create table #y (y tinyint)
insert into #y values (1)
insert into #y values (2)
insert into #y values (3)


DECLARE @startDate AS DATETIME
DECLARE @enddate AS DATETIME
DECLARE @y AS INT
SET @startDate='2012-10-12'
SET @enddate='2012-10-20'
SET @y=2

SELECT * 
FROM BABIES_TABLE
cross join #y 
WHERE CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) >= datediff(year, y - 1, @startdate )
AND CAST(CONVERT(VARCHAR, BABIES_TABLE.DOB, 111) AS DATETIME) <= DATEDIFF(year, y - 1, @enddate )
and y <= @y

用 cte 可能是可能的

更新

我有这个想法，以防您需要不久的特定日期测试。例如，如果 y=2，您希望 dob = 19/02/13 或 19/02/12 或 19/02/11，但在 19/02/11 和 19/02/13 之间不希望 dob。

于 2014-02-21T07:48:28.133 回答
0

将您的开始和结束日期以及 DOB 标准化为当前年份

 SET @startDate=DATEADD(yy, YEAR(@startDate)-YEAR(getdate()), @startDate)
 SET @enddate=DATEADD(yy, YEAR(@enddate)-YEAR(getdate()), @enddate)

 select * from babies where 
     Age >= @y  -- check that baby is old enough 
     and DATEADD(yy, YEAR(dob)-YEAR(getdate()), dob) between @startDate and @enddate - and the DOB is within a range in a year.
于 2014-02-21T07:32:39.040 回答