提高查询加入表的SELECT语句在T-SQL

我会很感激，如果有人可以帮助我与我的查询：提高查询加入表的SELECT语句在T-SQL

我的第一个查询：

SELECT 
    1 as num, 'TITLE1' as tt, [DATE], CURRENCY, 
    SUM(AMOUNT) as assets, NULL as liabilities 
FROM 
    [MYTABLE] T1 
WHERE 
    GROUP_ID IN (1700) AND [DATE] = '2014-01-20' 
GROUP BY 
    CURRENCY, [DATE]

这给了我：

num tt  DATE  CURRENCY assets  liabilities 
1 TITLE1 2014-01-20  USD   1111  NULL

第二个查询：

SELECT 
    1, 'TITLE1', [DATE], CURRENCY, NULL as assets, 
    SUM(AMOUNT) as liabilities 
FROM 
    [MYTABLE] T2 
WHERE 
    GROUP_ID IN (2700, 2770) 
    AND [DATE] = '2014-01-20' 
GROUP BY 
    CURRENCY, [DATE]

这给了我：

num  tt   DATE  CURRENCY  assets  liabilities 
1  TITLE1  2014-01-20 EUR   NULL  22222

我想加入这两个查询，这样的结果将是：

num  tt   DATE  CURRENCY  assets  liabilities 
1  TITLE1  2014-01-20 EUR   NULL  22222 
1  TITLE1  2014-01-20 USD   1111  NULL

这种情况时CURRENCY是不同的。但是，当CURRENCY是相同的结果应该是这样的：

num  tt   DATE  CURRENCY  assets  liabilities 
    1  TITLE1  2014-01-20 EUR   3333  22222 
    1  TITLE1  2014-01-20 USD   1111  44444

的逻辑是，我计算Assets和liabilities通过CURRENCY和从一个表DATE但在不同GROUD_ID与分组。尝试使用子查询，但只得到一个条目（如果当货币对assets和liabilities不同）：

SELECT 
    1, 'TITLE1', [DATE], CURRENCY, SUM(AMOUNT) as assets, 
    (SELECT SUM(AMOUNT) as liabilities 
    FROM [MYTABLE] T2 
    WHERE (GROUP_ID IN (2700, 2770)) 
     AND [DATE] = '2014-01-20' AND T1.CURRENCY = T2.CURRENCY 
    GROUP BY CURRENCY, [DATE]) 
FROM 
    [MYTABLE] T1 
WHERE 
    GROUP_ID IN (1700) AND [DATE] = '2014-01-20' 
GROUP BY 
    CURRENCY, [DATE]

我相信我可以用左手参加处理这个问题。我会很感激任何帮助。

来源

2014-01-30 Gyuzal R

试试这个：

SELECT 1 as num, 'TITLE1' as tt, [DATE], CURRENCY, 
     SUM(CASE WHEN GROUP_ID IN (1700) THEN AMOUNT END) as assets, 
     SUM(CASE WHEN GROUP_ID IN (2700, 2770) THEN AMOUNT END) as liabilities 
FROM [MYTABLE] T1 
WHERE GROUP_ID IN (1700, 2700, 2770) 
AND  [DATE] = '2014-01-20' 
GROUP BY CURRENCY, [DATE]

来源

2014-01-30 05:05:51

SELECT 1 as num, 'TITLE1' as tt, [DATE], CURRENCY, SUM(AMOUNT) as assets, NULL as liabilities 
FROM [MYTABLE] T1 WHERE GROUP_ID IN (1700) AND [DATE] = '2014-01-20' 
GROUP BY CURRENCY, [DATE] 

UNION 

SELECT 1, 'TITLE1', [DATE], CURRENCY, NULL as assets, 
SUM(AMOUNT) as liabilities FROM [MYTABLE] T2 WHERE GROUP_ID IN (2700, 2770) 
AND [DATE] = '2014-01-20' GROUP BY CURRENCY, [DATE]

来源

2014-01-30 04:41:16

我不能只UNION两个查询，因为我需要在一行中显示资产和负债，如果货币是相同的。 –

declare @MTable table (Date date, Currency char(3), Group_ID int, amount int) 
insert @Mtable 
values 
('20140120', 'USD',1700,1111), 
('20140120', 'USD',2700,1111), 
('20140120', 'EUR',2770,1111) 

declare @Assets table (ID int) 
insert @Assets values (1700) 
declare @Liabilities table (ID int) 
insert @Liabilities values (2700),(2770) 

; 

with RES as (
select [DATE], CURRENCY, 
     asset = sum(T1.Amount) over (PARTITION by [DATE], CURRENCY) , 
     liab = null 
FROM @MTABLE T1 
join @Assets T2 on T2.ID = T1.Group_ID 
union 
select [DATE], CURRENCY, 
     null, 
     sum(T1.Amount) over (PARTITION by [DATE], CURRENCY) 
FROM @MTABLE T1 join @Liabilities T2 
on T2.ID = T1.Group_ID 
) 

select distinct 
num = 1, tt = 'TITLE', RES.Date, RES.Currency, 
assets = sum(RES.asset) over (PARTITION by [DATE], CURRENCY), 
liabilities = sum(RES.liab) over (PARTITION by [DATE], CURRENCY) 
from RES 



/* Result : 
num   tt Date  Currency assets  liabilities 
----------- ----- ---------- -------- ----------- ----------- 
1   TITLE 2014-01-20 EUR  NULL  1111 
1   TITLE 2014-01-20 USD  1111  1111 


*/

来源

2014-01-30 04:58:45 DimaSUN

提高查询加入表的SELECT语句在T-SQL

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