Question

I want to create view that combine data from two tables, sample data in each table is like below.

SELECT Command for TableA

SELECT [ID], [Date], [SUM]
FROM TableA

Result

ID    |    Date     |    SUM
1     |    1/1/2010 |     2
1     |    1/2/2010 |     4
3     |    1/3/2010 |     6

SELECT Command for TableB

SELECT [ID], [Date], [SUM]
FROM TableB

Result

ID    |    Date     |    SUM
1     |    1/1/2010 |     5
1     |    2/1/2010 |     3
1     |   31/1/2010 |     2
2     |    1/2/2010 |     20

I want output like below

ID    |    Date     |    SUMA     |     SUMB
1     |    1/1/2010 |     2       |      10
1     |    1/2/2010 |     4       |       0
2     |    1/2/2010 |     0       |      20
3     |    1/3/2010 |     6       |       0

How can I do that on SQL Server 2005?

Date information be vary, as modify in table.

Answer 1

Try this…

SELECT 
 ISNULL(TableA.ID, TableB.ID) ID, 
 ISNULL(TableA.Date, TableB.Date), 
 ISNULL(TableA.Sum,0) SUMA, 
 ISNULL(TableB.Sum, 0) SUMB
FROM 
 TableA FULL OUTER JOIN TableB 
 ON TableA.ID = TableB.ID AND TableA.Date = TableB.Date
ORDER BY 
 ID

A full outer join is what you need because you want to include results from both tables regardless of whether there is a match or not.