20 million records and alter table
Posted on 2001-06-02
I have Sql-Server2000 and i have one table which has 20 million records.
Now i wanna do alter table on that i.e. i want to add identity column. when i tried firing alter table query on that the log file increased to 6GB but still was not able to execute that query and so i stopped it and some how restored data back.
Since this is live data i don't wanna take any more risk.
what i thought is say using bcp if i copy the data to text file and then if i do alter table it will work but while restoring data back from text file will it also populate the newly added column with the values like 1,2,3,4........ till 20 million.
So my concern is now on such a large table what is the best way to add a identity column with the values populated.
Expecting a good and reliable help.
Please note that this is live data.