Group by questions and hopefully solution

Question

I know you have to include all the columns that does not contain an aggregate function in a group by...however, I am currently in a situation where i am using several nested queries and the group by columns from the very first query is affecting my display output. I can't remove the column to fix it because i need that column to perform other checks. hence, Is there another way where it would be possible for me to still use a group by without including a specific column that does not contain an aggregate function in oracle

Answer 1

You might want to use "Analytical Functions" like
  1* select ename,deptno,sum(sal) over(partition by deptno) from emp
SQL> /
ENAME          DEPTNO SUM(SAL)OVER(PARTITIONBYDEPTNO)
CLARK              10                            8750
MILLER             10                            8750
KING               10                            8750
JONES              20                           10875
SMITH              20                           10875
SCOTT              20                           10875
FORD               20                           10875
ADAMS              20                           10875
WARD               30                            9500
TURNER             30                            9500
ALLEN              30                            9500
ENAME          DEPTNO SUM(SAL)OVER(PARTITIONBYDEPTNO)
JAMES              30                            9500
999999             30                            9500
MARTIN             30                            9500
BLAKE              30                            9500
15 rows selected.In this way you can include the columns that are not part of grouping. For more information please see
http://download.oracle.com/docs/cd/E11882_01/server.112/e10810/analysis.htm#DWHSG021