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Getting one row from a UNION

I have two select clauses with a UNION ALL and both GROUP BY employeeID

The resulting data looks like this:

Name       total1     total2
Joe Blow     3             0
Joe Blow     0             5

So Joe has 3 rows in the first select and 5 rows in the second select.

I want the final row data to look like this:

Name                  Total
Joe Blow                 8


The queries are something like this (with a lot left out where I say blah blah)...

select EmployeeName,total1, total2 from (SELECT 
LastName + ', ' + FirstName as EmployeeName , COUNT(Employee.EmployeeId) as total1, 0 as total2
From (blah blah)
Group by Employee.EmployeeId, UserProfile.LastName, UserProfile.Firstname
  UNION ALL 
SELECT 
LastName + ', ' + FirstName as EmployeeName, 0 as total1, COUNT(Employee.EmployeeId) as total2 
 from (blah blah)
 Group by Employee.EmployeeId, UserProfile.LastName, UserProfile.Firstname
) as table1
order by employeename

Open in new window


(Notice I store the count in total1 for the first select and total2 for the second select. If I stored them in the same name, the value was coming up 0 for the second select.)

Thanks!
0
Starr Duskk
Asked:
Starr Duskk
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1 Solution
 
Kent OlsenData Warehouse Architect / DBACommented:
Hi Bob,

Lots of ways to do this.  Mostly you just need to collapse the two columns into 1.

select EmployeeName,total1 + total2 
from 
( SELECT LastName + ', ' + FirstName as EmployeeName , COUNT(Employee.EmployeeId) as total1, 0 as total2
  From (blah blah)
  Group by Employee.EmployeeId, UserProfile.LastName, UserProfile.Firstname
  UNION ALL 
  SELECT LastName + ', ' + FirstName as EmployeeName, 0 as total1, COUNT(Employee.EmployeeId) as total2 
  from (blah blah)
  Group by Employee.EmployeeId, UserProfile.LastName, UserProfile.Firstname
) as table1
order by employeename

Open in new window

                                 
Good Luck,
Kent
0
 
Starr DuskkASP.NET VB.NET DeveloperAuthor Commented:
You're not understanding. All that does it create me two rows as I already indicated are in my results.
Joe Blow 3
Joe Blow 5


I want:

Joe Blow 8
0
 
Kent OlsenData Warehouse Architect / DBACommented:
Yeah.  My Bad.

select EmployeeName, sum (total1) + sum (total2)
from 
( SELECT LastName + ', ' + FirstName as EmployeeName , COUNT(Employee.EmployeeId) as total1, 0 as total2
  From (blah blah)
  Group by Employee.EmployeeId, UserProfile.LastName, UserProfile.Firstname
  UNION ALL 
  SELECT LastName + ', ' + FirstName as EmployeeName, 0 as total1, COUNT(Employee.EmployeeId) as total2 
  from (blah blah)
  Group by Employee.EmployeeId, UserProfile.LastName, UserProfile.Firstname
) as table1
group by employeename
order by employeename

Open in new window

                                           
And, of course, if both of the sub-queries being unioned are from the same table, we may be able to simplify this even more.

Oh.  And that also assumes that none of the values being added are NULL.  If so, the result will be NULL.  That's easy to solve though, just SUM (coalesce (value)).


Good Luck,
Kent
0
 
Starr DuskkASP.NET VB.NET DeveloperAuthor Commented:
that does it. thanks!
0

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