Obtenir des données à partir de table mutile dans le serveur SQL

Question

J'ai 3 table, je veux obtenir des données à partir de ces tables en utilisant join. Voici ma structure de table et mes données dans ces 3 tableaux. J'utilise MS Sql server.

Year Month  TotalNewCaseAmount TotalNewCaseCount TotalClosingAmount TotalReturnCount TotalClosingAmount TotalReturnCount 

2016 Januray  146825.91   1973    54774.41    147     299.35    41 

2016 Fabuary  129453.30   5384    46443.99    7     7568.21    123 

2016 March  21412.07   3198    Null     Null    78.83    73 

2016 April  0.00    5     Null     Null    Null    NULL 

Je ne sais pas ce qui me join ce résultat, je l'ai essayé CROSS JOIN, mais il me donner 36 suite.

Answer 1

Cela fera:

;WITH Table1 AS (
SELECT * 
FROM (VALUES 
(2016, 'Januray', 146825.91, 1973), 
(2016, 'Fabuary', 129453.30, 5384), 
(2016, 'March', 21412.07, 3198), 
(2016, 'April', 0.00, 5) 
) as t ([Year], [Month], TotalNewCaseAmount, TotalNewCaseCount) 
), Table2 AS (
SELECT * 
FROM (VALUES 
(2016, 'Januray', 54774.41, 147), 
(2016, 'Fabuary', 46443.99, 7) 
) as t ([Year], [Month], TotalClosingAmount, TotalClosingCount) 
), Table3 AS (
SELECT * 
FROM (VALUES 
(2016, 'Januray', 299.35, 41), 
(2016, 'Fabuary', 7568.21, 123), 
(2016, 'March', 78.83, 73) 
) as t ([Year], [Month], TotalReturnAmount, TotalReturnCount) 
) 

SELECT t1.[Year], 
     t1.[Month], 
     t1.TotalNewCaseAmount, 
     t1.TotalNewCaseCount, 
     t2.TotalClosingAmount, 
     t2.TotalClosingCount, 
     t3.TotalReturnAmount, 
     t3.TotalReturnCount 
FROM table1 t1 
LEFT JOIN table2 t2 
    ON t1.[Year] = t2.[Year] AND t1.[Month] = t2.[Month] 
LEFT JOIN table3 t3 
    ON t1.[Year] = t3.[Year] AND t1.[Month] = t3.[Month] 

Sortie:

Year Month TotalNewCaseAmount TotalNewCaseCount TotalClosingAmount TotalClosingCount TotalReturnAmount TotalReturnCount 
2016 Januray 146825.91   1973    54774.41   147     299.35    41 
2016 Fabuary 129453.30   5384    46443.99   7     7568.21    123 
2016 March 21412.07   3198    NULL    NULL    78.83    73 
2016 April 0.00    5     NULL    NULL    NULL    NULL 

Il suffit de changer table1, table2 et table3 pour les noms de vos tables.

Answer 2

Essayez comme ça,

select 
t1.*, 
t2.TotalClosingAmount, 
t2.TotalClosingCount, 
t3.TotalRetrunAmount, 
t3.TotalReturnCount 
from 
Table1 t1 
left join 
Table2 t2 on t1.year=t2.year 
and t1.month=t2.month 
left join 
Table3 t3 on t1.year=t3.year 
and t1.month=t3.month 

Answer 3

S'il vous plaît essayer

select year,month, totalnewcasesamount,totalnewcasescount, 
    totalclosingamount,totalclosingcount,totlareturnamopunt,totalreturncount 

    from table1 full outer join 
    table2 
    on table1.year=table2.year 
    and table1.month=table2.month  
    full outer join table3 
    on table1.year=table3.year 
    and table1.month=table3.month 
    where table1.year is not null 
    and table1.month is not nulll