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SQL PLSQL Interview Questions
Questions Answers Views Company eMail

1. what is the exact use of hint in sql. 2. How we can avoid index scan in sql even though index is there in the table.

Polaris,

1 5519

SQL Tuning, Oracle Server 10g: Why is the following hint invalid? SELECT /*+ first_rows parallel(table_name,paral_number)*/

Accenture,

1 7506

How to create a view on a table which does not exists

Oracle, TCS,

4 16687

I have a package in which a table was used in a procedure and compiled later i have dropped the table used in the package what would be the status of package specification and body

TCS,

1 4736

why we go for package? what are the advantages of using instead of seperate procuderes or functions

IBM, TCS,

3 7420

there is A table and B table in A table there 5 rows and in b table there are 2 rows i am firing query select * from a,b what will be the output?

Cognizant,

7 9646

What is nvl function?

Cap Gemini,

4 9281

what is 'force view'?

Cap Gemini, SPIC,

3 13364

Can we interchange parameters in procedure while calling

TCS,

1 5747

What is different between union and minus?

Accenture, TCS,

7 18066

how to create a database in oracle?please gve anser with example

1 3236

how to delete duplicate rows from a join tables(I have three tables on that join) how do you know which join is need to be used? The select statement I have is: SELECT gc_skill_type.skill_type, gc_area_tec.area, gc_technology.technology, gc_technology.id_technology, gc_area_tec.id_area_tec FROM gc_skill_type, gc_area_tec, gc_technology WHERE gc_area_tec.id_skill_type (+) = gc_skill_type.id_skill_type AND gc_technology.id_area_tec (+) = gc_area_tec.id_area_tec order by gc_skill_type.skill_type asc, gc_area_tec.area asc, gc_technology.technology asc

IAS,

1 2489

how to findout the 100th maximum salary

Amdocs,

28 17010

How to call the function and Procedure in trigger?

IBM,

3 9032

Like shown below i have 3 columns(Name,No,Address). The values in name column i want to modity. Requirement : Keep only once space between two words (Fname,Lname) in the Name column. For this what is the query? Please answer me. Advance Thanks. Name No Address Reference manoj kumar kumar raja vinzay kumar rajendra prasad gowri nath -- -- --

5 4734


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Un-Answered Questions { SQL PLSQL }

How do you pronounce sql?

109


What is linq to sql?

115


What are the different types of constraints?

143


In a distributed database system, can we execute two queries simultaneously?

136


What is rowtype?

109






How does an execution block start and end in pl sql?

111


What is sql profiler in oracle?

102


What is java sql drivermanager?

112


What does := mean in pl sql?

108


Explain the advantages and disadvantages of stored procedure?

157


What can I use instead of union in sql?

100


How to avoid duplicate records in a query?

147


what are the differences among rownum, rank and dense_rank? : Sql dba

139


What is trigger and how to use it in sql?

113


When sql appeared?

151