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Select Count Subquery

Posted on 2011-09-12
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Last Modified: 2012-05-12
I need to get the [Opportunity Count] field to return a count based on the SELECT Count(*) subquery written.  

See code below and look for the [Opportunity Count] column.
/*
Type Codes
Account - 1
Appointmenet - 4201
Opportunity - 3
*/

SELECT  Subject,
        RegardingObjectIdName,
        Description,
        CreatedByName,
        ScheduledEnd,
        ActualEnd,
        CreatedOn,
        RegardingObjectTypeCode,
        [Regarding]=CASE WHEN RegardingObjectTypeCode='1' THEN 'Account' WHEN RegardingObjectTypeCode='4201' THEN 'Appointment' WHEN RegardingObjectTypeCode='3' THEN 'Opportunity' ELSE 'n/a' END, 
        [Opportunity Count]= SELECT COUNT(*) FROM dbo.Opportunity o WHERE StateCode='0' AND o.AccountId=RegardingObjectId
FROM    dbo.Appointment 
ORDER BY ScheduledEnd desc

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Question by:r270ba
  • 2
3 Comments
 
LVL 23

Accepted Solution

by:
wdosanjos earned 500 total points
ID: 36523726
Please try the following:

/*
Type Codes
Account - 1
Appointmenet - 4201
Opportunity - 3
*/

SELECT  Subject,
        RegardingObjectIdName,
        Description,
        CreatedByName,
        ScheduledEnd,
        ActualEnd,
        CreatedOn,
        RegardingObjectTypeCode,
        CASE WHEN RegardingObjectTypeCode='1' THEN 'Account' WHEN RegardingObjectTypeCode='4201' THEN 'Appointment' WHEN RegardingObjectTypeCode='3' THEN 'Opportunity' ELSE 'n/a' END As [Regarding], 
        (SELECT COUNT(*) FROM dbo.Opportunity o WHERE StateCode='0' AND o.AccountId=RegardingObjectId) As [Opportunity Count]
FROM    dbo.Appointment 
ORDER BY ScheduledEnd desc

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Expert Comment

by:dqmq
ID: 36523733
You need parens around the select:


        [Opportunity Count]= (SELECT COUNT(*) FROM dbo.Opportunity o WHERE StateCode='0' AND o.AccountId=dbo.Appointment.RegardingObjectId)
0
 
LVL 42

Expert Comment

by:dqmq
ID: 36523770
Or, performance-wise, better yet,

SELECT  Subject,
        RegardingObjectIdName,
        Description,
        CreatedByName,
        ScheduledEnd,
        ActualEnd,
        CreatedOn,
        RegardingObjectTypeCode,
        [Regarding]=CASE WHEN RegardingObjectTypeCode='1' THEN 'Account' WHEN RegardingObjectTypeCode='4201' THEN 'Appointment' WHEN RegardingObjectTypeCode='3' THEN 'Opportunity' ELSE 'n/a' END,
[Opportunity Count]
FROM    dbo.Appointment inner join
  (Select AccountID, COUNT(*) as [opportunity Count] FROM dbo.Opportunity
 WHERE StateCode='0'
  group by AccountID
  ) as O
on o.AccountId=RegardingObjectId
ORDER BY ScheduledEnd desc
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