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;
Can there be 2 primary keys in a table?
What is normalization in a database?
What are the two types of exceptions.
table - new_no old_no 2345 1234 3456 2345 5678 4567 output sud be -new_no 1234 2345 3456 4567 5678
PL/SQL allocates memory for the variable's at runtime or at compile time
how tsql statements can be written and submitted to the database engine? : Transact sql
Explain the PL/SQL compilation process.
Temporary table vs Table variable in sql server?
table name: prod there are three fields in the table that are 1.proddate 2.prodQty 3.model Day wise prodQty is stored in the table prod write a query to display total prodqty in the year 2004 april.
What does select * from mean in sql?
Does varchar need length?
Is left join same as join?
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