Question

如何根据以下格式获取数据：

Id    name      year      month     amount 
1       A        2012      jan       100
1       A        2012      jan       900 
1       A        2012      jan       300
1       A        2012      apr       100
1       A        2012      apr       500 
2       B        2013      may       100

输出将采用下面提到的形式，如果参数中的名称，年份和月份，

Id     name   Jan    feb  mar  Apr  may  jun ...... jan .....may total
1       A      1300   0   0    600   0    0   .....  0 ...... 0 1900
2       B      0      0   0     0    0    0.........0.......100 100

Answer 1

您需要使用PIVOT来获得您提到的结果以下是使用PIVOT

的一个示例

和你的sql syntex一样

    SELECT * FROM (SELECT t.id,t.name,t.month,t.amount,(SELECT SUM(t2.amount) FROM dbo.test AS t2 GROUP BY t2.name HAVING t2.name= t.name ) AS total FROM dbo.test AS t) as s
PIVOT
(
    SUM(Amount)
    FOR [month] IN (jan, feb, mar, apr, 
    may, jun, jul, aug, sep, oct, nov, dec) 
)AS pivots

Example

Answer 2

declare @t table (Id INT,name VARCHAR(10),years VARCHAR(10),months  VARCHAR(10),amt INT  )
insert into  @t (Id,name,years,months,amt)values (1,'A','2012','jan',100)
insert into  @t (Id,name,years,months,amt)values (2,'A','2012','jan',100)
insert into  @t (Id,name,years,months,amt)values (3,'A','2012','apr',200)
insert into  @t (Id,name,years,months,amt)values (4,'A','2012','apr',100)
insert into  @t (Id,name,years,months,amt)values (5,'B','2013','may',200)

Select id,
    name,
    ISNULL(jan,0) As Jan,
    ISNULL(feb,0) As FEb,
    ISNULL(mar,0) As Mar,
    ISNULL(apr,0)As Apr,ISNULL(JUn,0)As Jun,ISNULL(jul,0)As jul,ISNULL(aug,0)As aug
         from
(Select distinct t.ID,t.name,t.years,t.months As Months,t.amt

        from @t t)t
PIVOT (SUM(amt)FOR Months IN( [jan],
    [feb],
    [mar],
    [apr],[JUn],[jul],[aug]))p

Answer 3

我认为这可能需要一个动态的支点？

CREATE TABLE #Data (
    Id INT,
    name VARCHAR(1),
    [year] INT,
    [month] VARCHAR(3),
    amount INT);
INSERT INTO #Data VALUES (1, 'A', 2012, 'jan', 100);
INSERT INTO #Data VALUES (1, 'A', 2012, 'jan', 900);
INSERT INTO #Data VALUES (1, 'A', 2012, 'jan', 300);
INSERT INTO #Data VALUES (1, 'A', 2012, 'apr', 100);
INSERT INTO #Data VALUES (1, 'A', 2012, 'apr', 500);
INSERT INTO #Data VALUES (2, 'B', 2013, 'may', 100);
DECLARE @cols VARCHAR(1024);
SELECT 
    @Cols = STUFF((
    SELECT DISTINCT 
        ',' + QUOTENAME(CONVERT(VARCHAR(4), [year]) + '/' + [month]) 
    FROM 
        #Data
    FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'),1 ,1 ,'');
DECLARE @Query VARCHAR(MAX);
SELECT @Query = '
WITH Aggregated AS (
    SELECT
        Id,
        name,
        CONVERT(VARCHAR(4), [year]) + ''/'' + [month] AS YearMonth,
        SUM(amount) AS amount
    FROM
        #Data
    GROUP BY
        Id,
        name,
        [year],
        [month])
SELECT
    *   
FROM
    Aggregated
PIVOT (
    SUM(amount)
    FOR YearMonth IN (' + @cols + ')
) p;';
EXEC (@Query);

结果如下：

Id  name    2012/apr    2012/jan    2013/may
1   A       600         1300        NULL
2   B       NULL        NULL        100

如何在sqlserver中按ID，年，月选择基于数据的组？

3 个答案: