Question { Fintellix, 2925 }

1. Which is an aggregate function?
a. Union b. like c. max d. Rank

Answer

Question { Fintellix, 8566 }

2. Select A.A from ( select 1 as from dual Union select 1 as from dual)A
Full outer join ( select 1 B from dual Union select 2 B from dual)B
On A.A=B.B

Answer

Question { Fintellix, 3074 }

3. Select sum(a) sum_1,max(a) max_1 ,count(a) count_1 from ( ( select 1 a from dual union all
Select to_number(‘2011’) a from dual union all select 1 a from dual) union select 2 b from dual);

Answer

Question { Fintellix, 2626 }

4. Select sum(A.salary) +sum(B.salary) as TOT_SAL from ( select LEVEL emp_id,level*100 salary,case when mod (level,2)=0then 2 else null end dept_id from dual connect by level<6 )A right outer join (select level emp_id ,level*200 salary ,case when mod (level,3)=0 then 2 else null end dept_id from dual connect by level<6)B
On A.dept_id=B.dept_id
And A.emp_id=B.emp-id;

Answer

Question { Fintellix, 2937 }

7. Where would you look for errors from the database design?

Answer