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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 5910

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

Accenture,

1 8579

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

Oracle, TCS,

4 18677

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 5293

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

IBM, TCS,

3 8377

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 11114

What is nvl function?

Cap Gemini,

4 10591

what is 'force view'?

Cap Gemini, SPIC,

3 15369

Can we interchange parameters in procedure while calling

TCS,

1 6314

What is different between union and minus?

Accenture, TCS,

7 20178

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

1 3645

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 2940

how to findout the 100th maximum salary

Amdocs,

28 21002

How to call the function and Procedure in trigger?

IBM,

3 9817

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 5760


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Un-Answered Questions { SQL PLSQL }

What are few of the schema objects that are created using PL/SQL?

419


What are triggers and its types?

388


How long it takes to learn pl sql?

363


Explain how to use transactions efficiently : transact sql

375


Is record in oracle pl sql?

367






Can you join a table to itself?

362


what is rollback? : Sql dba

446


Is sql a backend language?

419


What is the difference between unique and primary key constraints?

421


Why do we need cursor in pl sql?

474


What does 0 mean in sql?

373


what is a trigger? : Sql dba

417


What does data normalization mean?

364


Why partition by is used in sql?

404


What is keys and its types?

383