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Selecting alternate records

Use this tip to find alternate or even/odd records.

To find alternate or even/odd records, use this query:

select * from (select emp.* ,rownum k from emp ) where mod(k,2)=0;

select * from (select emp.* ,rownum k from emp ) where mod(k,2)<>0;

By using above query, you can get alernative rows.

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