Muultiple messages, different recipient groups

I'm writing a cron job where emails need to be sent at a specific time. Sometimes there could be, for instance, three emails to go out at 5:40. Each email has a different group of recipients.

I've read this post
showthread.php?t=19771&highlight=multiple
so I have a pretty good handle of how to iterate to the next message, but I can't get my head around how to deal with the recipients.

The DB uses one table to store the messages, and a relational table to store the recipients.

messages tbl: autoID msgSender msgText msgSubject etc.
recipients tbl: autoID msgID recipientID

Basically I need to run a new query for each msgID to discover the recipients, and I'm not sure how to start. If ya'll could point me in the right direction I'd be grateful.

(For the curious, I'm setting up a tabletop-type scenario for multiple classes of a college course. Each class will get the messages at the same time, but the message recipients are in different classes. The classes don't know about each other.)

looks like you would use a join query:

SELECT recipients.*, messages.*
FROM recipients
INNER JOIN messages
ON recipients.msgID = messages.autoID


this would return both the message and recipient for the message.

The join works, and I can get UE to send out one email message at the scheduled time.

But only one message, which is the problem. This is an iteration issue -- it's a loop-within-a-loop problem, where I don't think UE is set to loop at all. I keep breaking the code when I try to force the loop myself.

My rsMessages recordset has TWO messages in it, so I need a way to iterate the recordset. I'm also worried about the message recipients, because it looks like UE only runs one query to get the recipients, and I need it to run multiple queries; one for each message, since each message has a different recipient list. The loops would probably look something like this:

Get message recordset
For each record in rsMessages
---Get recipient recordset (since it's different for every record)
------send message
------free recipient results
Next message

The only thing in the forum I could find that came close was this thread
showthread.php?t=19771&highlight=multiple
and only the last post about adding a fetch statement seemed really on-target, but when I tried that fix everything broke.

My broken code is attached. I'm not sure it's any help, as it's (um) broken.

I have created a support ticket so we can look into this issue further.

To view and edit your support ticket, please log into your support history:
supporthistory.php

If anyone else is experiencing this same issue, please append to this thread.