what are set operators in sql? : Sql dba

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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;

1 Answers   Fintellix,

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Explain the purpose of %type and %rowtype data types?

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What are the steps you take to tune(performance tuning) the code in plsql?

4 Answers   Cap Gemini, Infosys, TCS,

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What is mdf ldf and ndf?

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what is text? : Sql dba

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What is difference between sql function and stored procedure?

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How would you reference column values before and after you have inserted and deleted triggers?

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What are properties of the transaction?

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What is sql clause?

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What are pl/sql cursor exceptions?

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How can I change database name in sql?

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