I have to get to work but here's a 60,000 ft view of what I would do...
1. DO A FULL BACKUP!!!!!!!!!!!!
2. MAKE SURE POINT-IN-TIME BACKUPS ARE BEING TAKEN111!
3. Create an empty identical table.
4. Do a cascaded-rename (takes about 63ms) to rename the old table to something else and rename the new table to what the old table was named. This new table will continue in the place of the old table.
5. Insert the desired old rows from the old table into the new table using a WHILE loop that does it in 3 million row batchs (most systems will reach a tipping point shortly after that so I wouldn't go much higher if at all).
6. When you're absolutely sure that everything worked correctly, DROP the old table.
is pronounced ree-bar and is a Modenism for R
First step towards the paradigm shift of writing Set Based code: Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
Although they tell us that they want it real bad, our primary goal is to ensure that we dont actually give it to them that way.
Although change is inevitable, change for the better is usually not.
Just because you can do something in PowerShell, doesnt mean you should. Helpful Links:
How to post code problemsHow to post performance problemsForum FAQs