how to fetch alternate records from a table? : Sql dba

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How many commands are in sql?

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What is a constraint. Types of constraints ?

5 Answers   Accenture, BirlaSoft,

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What is a primary key? Explain

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What are the key differences between SQL and PL SQL?

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How do I install microsoft sql?

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How does rowid help in running a query faster?

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what is difference b/w pravite procedures and public procedures?

3 Answers   Steria, Wipro, Zensar,

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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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What is a ddl command?

0 Answers  

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Can dml statements be used in pl/sql?

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What is cursor and why it is required?

0 Answers  

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