How to read/write files from pl/sql?

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What is union and union all keyword in sql?

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What is a database? Explain

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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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Define the select into statement.

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Query for second maximum salary in each in each department

15 Answers   DST Global Solutions, TCS,

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What is assignment operator in pl sql?

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What is sql mysql pl sql oracle?

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what is a database lock ? : Sql dba

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What is the importance of sqlcode and sqlerrm?

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Hi am new to PLSQL & facing problems in writing code like in SP, Functions, so any one having some SP coding with in depth explanation please share with me my Email ID suvarnaatsuvarna@rediffmail.com Or taking tanning on this please do contact me

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What is Primary Key?

4 Answers   Ramco,

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