What is trigger and how to use it in sql?

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Is foreign key mandatory?

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How do I turn a list into a table?

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What is constant in pl sql?

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What does plvtab enables you to do when you showthe contents of pl/sql tables?

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What is the difference between inner join and left join?

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What are the advantages of pl sql?

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display null value rows with out using null function?

8 Answers   Infosys,

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How do I view an execution plan in sql?

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What is record type in pl sql?

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How can a function retun more than one value in oracle with proper example?

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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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