Subquery returned more than 1 value

Question

I need to set up a job in SQL Server 2008 to run at the first of the month sending an email to our customers. However, I do not know how to loop through the results of the s

Answer 1

The error is here where you have many rows trying to be assigned to a single variable

SET @Recipients =(SELECT DISTINCT a.EMail
     FROM   a
    --approximately 600 email addresses 

You'd need to change it to a separated list thus

SET @Recipients = STUFF(
           (select DISTINCT ';' + CAST(a.EMail AS varchar(max))
           FROM a FOR XML PATH ('')
           )
          ,1,1, '') 

Note: @Recipients will need to be varchar(max)

Answer 2

the problem is @recipients = @MailRecipients. It is expecting a string (an email address) and you are giving it a recordSet.