Re: [PATCH] PostgreSQL DLR speedup

>> Hi Andreas,
>> I believe and observed the opposite. The SMSC increments the  
>> timestamp - even in the same second - if 2 messages are delivered  
>> to the same destination number within the same second.
>> Are you really sure about this?
>> Georg

not on a standard CMG SMSC.
This was an issue with multipart long text message which got sent the  
same second usually with same SMSC and same destination number. Both  
part ended up with the same timestamp. So the LIMIT 1 was added so it  
considers ONE of them delivered when ONE delivery report came in. It  
MIGHT be the wrong one but at leas the COUNT was right. Still better  
than to acknowledge both part delivered when only one was.