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Join Values from 2 columns


Join Values from 2 columns

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davdam8
davdam8
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Hi geniuses,

I have a table which contains groups inside Receivers and Payers (2 columns).
Some groups can be Receivers and Payers, for instance , A and B.
B, D and E are only payers.

For the receivers we got A, B and C.
For the payers we have A, B, D and E.

Receivers \\ Payers
A \\ A
B \\ A
A \\ B
A \\ D
B \\ D
C \\ A
B \\ E
A \\ E

How do I create a column 'Group' that contains both Receivers and Payers, not repeated?
What i need:

Group
A
B
C
D
E

Thanks, Regards
Mark Cowne
Mark Cowne
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SELECT Receivers FROM myTable
UNION
SELECT Payers FROM myTable



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I think this is what you're looking for...
Providing easily consumable sample data makes it easier for people to help and more likely...


--Setup Sample Data
declare @transactions as table (Receivers char(1), Payers char(1))
insert into @transactions(Receivers, Payers)
values('A' , 'A')
,('B' , 'A')
,('A' , 'B')
,('A' , 'D')
,('B' , 'D')
,('C' , 'A')
,('B' , 'E')
,('A' , 'E')

--Actual work statement
select distinct [Group]
from (
select Receivers [Group]
from @transactions
union all
select Payers [Group]
from @transactions
) c



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davdam8
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Thanks Very Much! Helped a lot.
Could you geniuses take a look at this topic:

http://www.sqlservercentral.com/Forums/Topic1409896-391-1.aspx

Thanks again.
Best regards
davdam8
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It is possible to add a Group By inside each Select?
If yes how do you do it?
Thanks.
Orlando Colamatteo
Orlando Colamatteo
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I suspect your definition of 'group by' might be different than mine. Using the sample data in your first post how would the resultset look if it did a "Group By inside each Select"?

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dwain.c
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Hers's another way.


declare @transactions as table (Receivers char(1), Payers char(1))
insert into @transactions(Receivers, Payers)
values('A' , 'A')
,('B' , 'A')
,('A' , 'B')
,('A' , 'D')
,('B' , 'D')
,('C' , 'A')
,('B' , 'E')
,('A' , 'E')

SELECT RecPyr
FROM @transactions
CROSS APPLY (VALUES (Receivers),(Payers)) a(RecPyr)
GROUP BY RecPyr




Now what did you want to do with a GROUP BY inside of the SELECT?


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Need to UNPIVOT? Why not CROSS APPLY VALUES instead?
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