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 6139

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

Accenture,

1 8969

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

Oracle, TCS,

4 19497

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 5584

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

IBM, TCS,

3 8929

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 11881

What is nvl function?

Cap Gemini,

4 11271

what is 'force view'?

Cap Gemini, SPIC,

3 16544

Can we interchange parameters in procedure while calling

TCS,

1 6614

What is different between union and minus?

Accenture, TCS,

7 21022

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

1 3847

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 3201

how to findout the 100th maximum salary

Amdocs,

28 23103

How to call the function and Procedure in trigger?

IBM,

3 10215

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 6320


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Un-Answered Questions { SQL PLSQL }

How many sql databases can you have on one server?

566


how would you get the current date in mysql? : Sql dba

511


How does cross join work in sql?

510


How do sql triggers work?

528


What is equi join in sql?

580






Is postgresql a nosql database?

506


What is database sql?

516


how to drop an existing view in mysql? : Sql dba

544


Can we connect to postgresql using sql developer?

464


What is dialect in sql?

509


what is uncommittable transactions? : Transact sql

539


what are wild cards used in database for pattern matching ? : Sql dba

523


Why do we use subquery?

462


What is materialized view. What are different methods of refresh?

757


What is the use of non clustered index?

507