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Oracle SQL PLSQL Interview Questions
Questions Answers Views Company eMail

What is correlated sub-query?

 7 42215

how instead of triger is helpful for mutating tables errors handlling ?

 2 10503

What are the advantages of the packages

 6 11891

what are the advantages of primary key over unique+notnull

 7 21989

how to retrieve the top 3 salaries of the table using rownum

 31 40601

what is the difference between union and union all

 14 45857

What is the difference between join and union.

 27 179570

declare l1 number := null; l2 number :=null; begin if l1=l2 then message('equal'); else if l1<>l2 then message('not equal'); else message('else'); end if; end if; end; What will be the output ?

7 14082

declare lowerl number:= 1; upperl number:= 3; num varchar2(10); begin for i into lowerl..upperl loop num:=num||to_char(lowerl); if i=3 then upperl:=5; end loop; message(num); What will be the output ?

3 8768

Given two tables Student(SID, Name, Course) and Level(SID, level) write the SQL statement to get the name and SID of the student who are taking course = 3 and at freshman level.

 9 15579

What cursor type do you use to retrieve multiple recordsets?

17 69910

Two Methods of retrieving SQL?

 7 56327

How do you optimize SQL queries ?

 6 35581

How well can multiple sessions access the same data simultaneously ?

 1 3409

Delete duplicate records in the emp table.

 6 14568

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Oracle SQL PLSQL Interview Questions


Un-Answered Questions

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Explain the different system tables used in cics?

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What is the starting point of code execution in jquery?

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Which method is called when reference variable is passed in system.net?

2342

how can you get the errors in job? when loops are araised we get error?

2054

How many chart of accounts can be attached to a company code?

992

How do you make a toggle switch in excel?

572

Is an integer an object?

902

What is event target in javascript?

890

Define transaction and transaction isolation levels?

929

How does xml store and transport data?

973

Differentiate between microcontroller and microprocessor.

1086

What are the 2 kinds of data type conversions in c#?

818

What is linq query in asp net?

145