another thing you are not able to do on the forgien key tables because it always
have more than one entry in the table.

Thanks for sharing

I have just implement the same approach but my case is little different.
I don’t want to delete records from temp table so I have used below approach.

DECLARE @iNextCalID BIGINT, @iCurrCalID BIGINT

SET @iCurrCalID = 0;

WHILE(1 = 1)
BEGIN
SELECT
@iNextCalID = MIN(CalendarID)
FROM
#tmpCalendar
WHERE
CalendarID > @iCurrCalID;

IF @iNextCalID is NULL
BREAK;

SET @iCurrCalID = @iNextCalID;
END

—————————————————-

Here what I have done is,
Instead of deleting the record from temp table get MIN(Primary Key ID) where Primary Key ID is Grater Than (>) current ID and assign it to Next ID..

If Next ID is NULL then BREAK the LOOP…

This approach is also good and replacable of CURSOR if you want to keep your TEMP table as it is…

Thanks for sharing information.

Regards
Jigar