Selecting certain columns in oracle

Question

i have a table with n columns, of which in 2 columns each may have similar values for certain number of rows
i want to find if one of the entries in a column has same value in the next few rows
if so i have to display a message
else i have to display another message
can anybody send the query

Answer 1

Something like below ?
SCOTT@demo102> l
  1  select deptno, job
  2  from emp
  3* order by 1, 2
SCOTT@demo102> /
    DEPTNO JOB
        10 CLERK
        10 MANAGER
        10 PRESIDENT
        20 ANALYST
        20 ANALYST
        20 CLERK
        20 CLERK
        20 MANAGER
        30 CLERK
        30 MANAGER
        30 SALESMAN
        30 SALESMAN
        30 SALESMAN
        30 SALESMAN
14 rows selected.
SCOTT@demo102> ed
Wrote file afiedt.buf
  1  select deptno, job, decode(count(*),1,'b','a') Multiple
  2  from emp
  3  group by deptno, job
  4* order by deptno, job
SCOTT@demo102> /
    DEPTNO JOB       M
        10 CLERK     b
        10 MANAGER   b
        10 PRESIDENT b
        20 ANALYST   a
        20 CLERK     a
        20 MANAGER   b
        30 CLERK     b
        30 MANAGER   b
        30 SALESMAN  a
9 rows selected.
SCOTT@demo102> Nicolas.