fetching data using rownum in oracle

Question

I have a query in oracle to fetch data from table using rownum but i didn\'t get any data.
My query is like this :

select * from table-name wher

Answer 1

Since for the reasons rahularyansharma mentions, rownum based queries won't always function the way you might expect, a way around this is to do something like

SELECT * from (SELECT rownum AS rn, TABLE_NAME.* FROM TABLE_NAME)
where rn > 5;

However, be aware that this will be a fairly inefficient operation when operating over large datasets.