Question

表。

我的桌子行。一月份

2月份的行

我的示例查询

select id2,
(select budget from tblmonth where id2='1' and month='January' and groups='CCARE') as jbud1,
(select actual from tblmonth where id2='1' and month='January' and groups='CCARE') as jact1,
(select variance from tblmonth where id2='1' and month='January' and groups='CCARE') as jvar1,
(select [percent] from tblmonth where id2='1' and month='January' and groups='CCARE') as jper1,

(select budget from tblmonth where id2='2' and month='February' and groups='CCARE') as fbud2,
(select actual from tblmonth where id2='2' and month='February' and groups='CCARE') as fact2,
(select variance from tblmonth where id2='2' and month='February' and groups='CCARE') as fvar2,
(select [percent] from tblmonth where id2='2' and month='February' and groups='CCARE') as fper2


 from tblmonth where groups='CCARE' and id2='1' and month='January'

我对此查询的问题是它返回重复值。

我想实现的是。

每个月的列预算，实际值，差异，百分比将在单个结果中显示。像这样在图像中。

提前感谢:)我只是sql和我使用sql server 2014的新手。

Answer 1

首先我创建临时表，类似于你的：

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            jarPath = jarPath.getParentFile();
        }

    File pkcs11wrapperFile = new File(jarPath, "libpkcs11wrapper" + arch + ".dll");
    System.out.println("Absolute path is "+pkcs11wrapperFile.getAbsolutePath());
    Pkcs11Shell pkcs11Shell = new Pkcs11Shell(pkcs11wrapperFile.getAbsolutePath());

然后我运行了动态SQL + UNPIVOT + PIVOT（关于透视，你可以阅读MSDN和here）：

CREATE TABLE #tblmonth (
    id2 smallint,
    [year] varchar(50), 
    groups varchar(100), 
    element varchar(100), 
    [month] varchar(50), 
    budget decimal(18,2),
    actual decimal(18,2),
    variance decimal(18,2),
    [percent] decimal(18,2),
)

INSERT INTO #tblmonth VALUES
(1, 2016, 'CCARE', 'Basic', 'January', 52.28, 43.00, 43.98, 0.00),
(2, 2016, 'CCARE', 'Bonuses', 'January', 1.77, 17.10, -46.12, 0.00),
(3, 2016, 'CCARE', 'Overtime', 'January', 2.34, 20.20, 7.98, 0.00),
(4, 2016, 'CCARE', 'Comminication', 'January', 19.01, 27.34, -81.98, 0.00),
(5, 2016, 'CCARE', 'HDMF', 'January', 0.98, 22.17, -22.98, 0.00),
(1, 2016, 'CCARE', 'Basic', 'February', 152.28, 3.00, 4.98, 0.00),
(2, 2016, 'CCARE', 'Bonuses', 'February', 12.77, 1.10, -4.12, 0.00),
(3, 2016, 'CCARE', 'Overtime', 'February', 23.34, 3.20, 0.98, 0.00),
(4, 2016, 'CCARE', 'Comminication', 'February', 191.01, 2.34, -1.98, 0.00),
(5, 2016, 'CCARE', 'HDMF', 'February', 10.98, 2.17, -2.98, 0.00)

输出：

DECLARE @sql nvarchar(max),
        @columns nvarchar(max)
--here we get column names for pivoting, so we dont need to write them by hand
SELECT @columns = STUFF((
    SELECT ',budget'+[MONTH] + ',actual'+[MONTH]+ ',variance'+[MONTH]+',percent'+[MONTH]
    FROM #tblmonth 
    GROUP BY [MONTH]
    FOR XML PATH('')),1,1,'')

-- Main query, at first we UNPIVOT so we make column to rows,
-- then we pivot them back in a way we need.
SELECT @sql = '
SELECT *
FROM (
    SELECT  [year], 
            groups, 
            element, 
            [rows] + [month] as [rowname],
            [values]
    FROM (
        SELECT  id2,
                [year],
                groups,
                element,
                [month],
                CAST(budget as varchar(50)) as budget,
                CAST(actual as varchar(50)) as actual,
                CAST(variance as varchar(50)) as variance,
                CAST([percent] as varchar(50)) as [percent]
        FROM #tblmonth) as p
    UNPIVOT (
        [values] FOR [rows]
        IN (budget, actual, variance, [percent])
    ) as unpvt
    ) as p
PIVOT(
    MAX([values]) FOR [rowname] IN ('+@columns+'
)
)  as pvt'

EXEC sp_executesql @sql

Answer 2

它应该是这样的：

 select 
   q.id2, q.year, q.groups, q.element, 
   jan.month as jMonth, jan.budget as jBudget, jan.actual as jActual, jan.variance as jVariance, jan.[percent] as jPercent, jan.date_update as jDateUpdate,
   feb.month as fMonth, feb.budget as fBudget, feb.actual as fActual, feb.variance as fVariance, feb.[percent] as fPercent, feb.date_update as fDateUpdate
 from (select groups, year, id2, element from tblmonth 
       where groups='CCARE' and year=2016 group by groups, year, id2, element) q
 left join (select * from tblmonth 
            where groups='CCARE' and year=2016 and month='January') jan
   on (q.groups = jan.groups and q.year = jan.year and 
       q.id2 = jan.id2 and q.element = jan.element)
 left join (select * from tblmonth 
            where groups='CCARE' and year=2016 and month='February') feb 
   on (q.groups = feb.groups and q.year = feb.year and 
       q.id2 = feb.id2 and q.element = feb.element);

只需在公共字段上加入子查询。

第一个子查询q并不是真正重要的。因为您可以使用其中一个月来加入其他月份但是如果要增加额外的月份，SQL会以这种方式看起来更好虽然它会使SQL更小。例如：

select 
  jan.id2, jan.year, jan.groups, jan.element, 
  jan.month as jMonth, jan.budget as jBudget, jan.actual as jActual, jan.variance as jVariance, jan.[percent] as jPercent, jan.date_update as jDateUpdate,
  feb.month as fMonth, feb.budget as fBudget, feb.actual as fActual, feb.variance as fVariance, feb.[percent] as fPercent, feb.date_update as fDateUpdate
from tblmonth jan
left join tblmonth feb on (jan.groups = feb.groups and jan.year = feb.year and jan.id2 = feb.id2 
                           and jan.element = feb.element and feb.month = 'February')
where jan.groups='CCARE' and jan.year=2016 and jan.month='January';

Answer 3

试试这个：

select t1.id2, t1.budget,t1.actual,t1.variance,t1[percent]
,t2.budget,t2.actual,t2.variance,t2.[percent] 
from tblmonth t1 inner join 
 (select * from tblmonth where groups='CCARE' and month='February' ) t2
 on t1.id2 = t2.id2 and t1.year = t2.year
 where t1.groups='CCARE' and t1.month='January'

如何使用1表中的pivot水平查看sql查询

3 个答案: