Multiple table SQL trigger an email to update - sql

Question

Ok, much closer here for sure, but now it sends mass amounts of emails on one record update? I know I'm missing something here. First shot at cursors, so I'm guessing I've done something wrong in there? As always, Thanks for the help!!
create trigger eMailScheduleChange on dbo.BOOKINGS after update as
set nocount on;
Declare EmailCursor Cursor read_only for
select r.Name as RName
, c.Name as CName
, i.BookingTypeId
, i.Start
, i.Finish
, r.Email
from Wallchart.dbo.BOOKINGS b
inner join Wallchart.dbo.CUSTOMERS c on b.CustomerId = c.CustomerId
inner join Wallchart.dbo.RESOURCES r on b.ResourceId = r.ResourceId
inner join Inserted i on i.CustomerId = b.CustomerId
where i.BookingTypeId <> b.BookingTypeId
Declare #Email as varchar(50)
Declare #CName as varchar(100)
Declare #Start as datetime
Declare #RName as varchar (100)
Declare #Finish as datetime
Declare #body as varchar (255)
Declare #BookingTypeId as varchar (50)
open EmailCursor
Fetch next from EmailCursor
INTO #Email, #CName, #Start, #RName, #Finish, #BookingTypeId
While ##FETCH_STATUS=0
BEGIN
Set #body = '<Account cancelled>' + #CName + #Start + #Finish
EXEC msdb.dbo.sp_send_dbmail
#profile_name = 'SQLMail',
#recipients = #Email,
#subject = 'Account Update',
#body = #body
FETCH NEXT FROM EmailCursor INTO #Email, #CName, #Start, #RName, #Finish, #BookingTypeId
SET NOCOUNT OFF
END
Close EmailCursor
Deallocate EmailCursor

Answer 1

I think perhaps you have the impression that a query in a trigger is not allowed to read data from another table. This is not the case or triggers would be fairly useless. Here is a stub of how your trigger might look. I demonstrated how to pull the information you want. From there it is simply calling sp_send_dbmail.
create trigger MyTrigger on dbo.BOOKINGS for update as
set nocount on;
select r.Name
, c.Name
, i.BookingTypeId
, i.Start
, i.Finish
, r.Email
from Schedule.dbo.BOOKINGS b
inner join Wallchart.dbo.CUSTOMERS c on b.CustomerId = c.CustomerId
inner join Schedule.dbo.RESOURCES r on b.ResourceId = r.ResourceId
inner join Inserted i on i.SomeKeyValue = b.SomeKeyValue
where i.BookingTypeID <> b.BookingTypeID
--Now you can see how to capture all the information. All that is left is to call sp_send_dbmail
--https://msdn.microsoft.com/en-us/library/ms190307.aspx

Answer 2

SQL Server does not support direct mailing from the scripts. But you have other options.
First Create a table to capture the records that are being changed and also set a EmailFlag so that you can identify whether or not you have notified that user about the change.
The create a store procedure that will give you the list of all users that has undergone some changes but not notified by email (EmailFlag ="N" or something like that)
Now use the SSIS to create a send mail task to send the details email for all these users.
Once you have sent the email for each user, then you can update the EmailFlag as "Y" for that record. You can make the SSIS package a scheduled job in the SQL Server so that it will automatically run between certain interval.
You can use a for each loop container in SSIS so that you can send mail individually to each recipient
Please refer the following Links for more details
SSIS - How to configure a send mail task