What are the sql aggregate functions?

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8 Answers   Wipro,

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How do you select unique values in sql?

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Which command is used to call a stored procedure?

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how can we know the count/number of elements of an array? : Sql dba

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How do you declare a variable in pl sql?

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What is the sql query to display the current date?

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What is varchar used for?

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What is difference between a Cursor declared in a procedure and Cursor declared in a package specification ?

2 Answers   JDA,

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when MSQL8.0 is in market

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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 scalar function in sql?

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