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Oracle Rownum Dump

williamwlk asked
Last Modified: 2012-08-13

In oracle, I would like to achieve this

- I have one million records:
select count(bookid) from books where location='W01' and backuplocation='B01';
- I would like change any 150,000  bookid's 'location'='W01' to 'W02', where 'backuplocation'='B01'. [sql1]
- i commit the change.
- In case of problems, I would like to change those bookid's 'location'='W02' back to 'location'='W01 where 'backuplocation'='B01'. In another words, I would like to rollback [sql1].

Help, Please.


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