Golgappa.net | Golgappa.org | BagIndia.net | BodyIndia.Com | CabIndia.net | CarsBikes.net | CarsBikes.org | CashIndia.net | ConsumerIndia.net | CookingIndia.net | DataIndia.net | DealIndia.net | EmailIndia.net | FirstTablet.com | FirstTourist.com | ForsaleIndia.net | IndiaBody.Com | IndiaCab.net | IndiaCash.net | IndiaModel.net | KidForum.net | OfficeIndia.net | PaysIndia.com | RestaurantIndia.net | RestaurantsIndia.net | SaleForum.net | SellForum.net | SoldIndia.com | StarIndia.net | TomatoCab.com | TomatoCabs.com | TownIndia.com
Interested to Buy Any Domain ? << Click Here >> for more details...

  1. Categories >> Software >> Databases >> SQL PLSQL
  2. Suggest New Category

I am creating an index on Emp table Empno column,if u using
this indexed column in ur SELECT stmt. where clause,then how
do u know that yr index will be working or nor?
Thanks Advance...

Question Posted / ajit

Answers were Sorted based on User's Feedback



I am creating an index on Emp table Empno column,if u using this indexed column in ur SELECT stmt...

Answer / satish

Do the explain plan.if it is not using ur created index
then use hints to use ur created index

Is This Answer Correct ?    6 Yes 0 No

I am creating an index on Emp table Empno column,if u using this indexed column in ur SELECT stmt...

Answer / suresh ramsing

You execute your query like
explain plan for select sal from emp where empno='1224';
after that check this below one.
select * from table(dbms_xplan.display);
here u can find it'll be excuted by using index or TABLE ACCESS FULL

Is This Answer Correct ?    4 Yes 0 No

I am creating an index on Emp table Empno column,if u using this indexed column in ur SELECT stmt...

Answer / manoranjan sethy

by using SET AUTOTRACE ON EXPLAIN tool you can came to know weather such index is working or not.

Is This Answer Correct ?    1 Yes 0 No

Post New Answer

More SQL PLSQL Interview Questions

What is pl sql script?

0 Answers  

Can we write dml inside a function in sql server?

0 Answers  

what is the difference between char_length and length? : Sql dba

0 Answers  

Is pl sql useful?

0 Answers  

what is the difference between varray and table data type..please expalain with some examples... under what situation you will go for varray..instead of index by table...

1 Answers   HCL, Satyam,

How do you sort in sql?

0 Answers  

i want run a sql query query? which phases are run in a back ground? pls tell me the answer

1 Answers  

What is a Procedure ?

3 Answers  

what is sql profiler? : Sql dba

0 Answers  

Is it mandatory for the primary key to be given a value when a new record is inserted?

0 Answers  

Can function return multiple values in sql?

0 Answers  

What are hotfixes and patches?

0 Answers  

For more SQL PLSQL Interview Questions Click Here
Categories