Interview Questions

Display Odd/ Even number of records

DATABASE Administrator (DBA) Interview Questions and Answers

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67. Display Odd/ Even number of records

Odd number of records:
select * from emp where (rowid,1) in (select rowid, mod(rownum,2) from emp);
1
3
5
Even number of records:
select * from emp where (rowid,0) in (select rowid, mod(rownum,2) from emp)
2
4
6

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