The type of the value (DBNull) being assigned to variable "User::AlereCoachingEnrolledID" differs from the current variable type (Int32)

Question

This occurred within an Execute SQL Task
I am trying to get my entire result set with the following SQL...
IF EXISTS
SELECT [Alere_Coaching_Enrolled].[AlereCoachingEnrolledID]
FROM [dbo].[Alere_Coaching_Enrolled]
WHERE ([Alere_Coaching_Enrolled].[MatchMember] IS NULL
OR [Alere_Coaching_Enrolled].[MatchMember] = 0)
AND ([Alere_Coaching_Enrolled].[Processed] IS NULL
OR [Alere_Coaching_Enrolled].[Processed] = 0)
BEGIN
SELECT [Alere_Coaching_Enrolled].[AlereCoachingEnrolledID]
FROM [dbo].[Alere_Coaching_Enrolled]
WHERE ([Alere_Coaching_Enrolled].[MatchMember] IS NULL
OR [Alere_Coaching_Enrolled].[MatchMember] = 0)
AND ([Alere_Coaching_Enrolled].[Processed] IS NULL
OR [Alere_Coaching_Enrolled].[Processed] = 0)
END
ELSE
BEGIN
SELECT 0 AS [AlereCoachingEnrolledID]
END
I want to handle using a Sequence Container and an Expression and Constraint if I have rows to process and if I do not...thus the 0 portion of the SQL...
Thanks for your review and am hopeful for a reply.

Answer 1

Hi ITBobbyP,
As per my understanding, you created Execute SQL Task with the query and created a variable of int32, then set ResultSet to Full result set. When you run the package, you got the error message.
I reproduced the issue in my local machine, since the query can return a result set, you set type of variable to int32, so the error occurred. A Full result set must map to a variable of the Object data type. The return result is a rowset object. We can
use a Foreach Loop container to extract the table row values that are stored in the Object variable into package variables, and then use a Script Task to write the data stored in packages variables to a file.
For more information, please refer to Populating a variable with a result set section in the document:
https://msdn.microsoft.com/en-us/library/cc280492.aspx
If you have any more questions, please feel free to ask.
Thanks,
Wendy Fu
Wendy Fu
TechNet Community Support