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

What is the main difference between a UNION statement and a
UNION ALL statement?

1. A UNION statement eliminates duplicate rows; a UNION
ALL statement includes duplicate rows.
2. A UNION statement can be used to combine any number of
queries; a UNION ALL statement can be used to combine a
maximum of two queries.
3. A UNION statement can only combine queries that have
parallel fields in the SELECT list; a UNION ALL statement
can combine queries with differing SELECT list structures.
4. A UNION statement cannot be used with aggregate
functions; a UNION ALL statement can be used with aggregate
functions.
5. There is no difference between the two statements; they
are interchangeable.

Question Posted / suresh

Answers were Sorted based on User's Feedback



What is the main difference between a UNION statement and a UNION ALL statement? 1. A UNI..

Answer / anil_abbireddy

1. A UNION statement eliminates duplicate rows; a UNION ALL
statement includes duplicate rows.

Is This Answer Correct ?    11 Yes 0 No

What is the main difference between a UNION statement and a UNION ALL statement? 1. A UNI..

Answer / menan

A UNION statement eliminates duplicate rows; a UNION
ALL statement includes duplicate rows.

Is This Answer Correct ?    4 Yes 0 No

Post New Answer

More SQL PLSQL Interview Questions

How do I quit sql?

0 Answers  

What is sql in java?

0 Answers  

what are the tunnig tables you used for tuning a query and tell me some of coloumns in that tuning tables?

1 Answers   Metric Stream,

What are aggregate and scalar functions?

0 Answers  

How can you fetch first 5 characters of the string?

0 Answers  

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

3 Answers   IBM, TCS,

What is sqlexception in java?

0 Answers  

What is multiple partition?

0 Answers  

Define commit?

0 Answers  

What is application trigger?

0 Answers  

What are user defined functions?

0 Answers  

how to give permission to users that users can update/insert/delete on a row of table on timeing 10am to 6pm only?

4 Answers   TCS,

For more SQL PLSQL Interview Questions Click Here
Categories