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...

Can we use more than one null value for unique key?

Answer Posted / rajesh

yes,we can use more than one null value for unique key.
Bcz all null values are unique,
thing is that null is unknown ,unassignable,
undefind ,inapplicable value and allwase null is not equal
to null and any arithimitic operation and logical
comparision all wase result null

Is This Answer Correct ?    21 Yes 9 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

How do I remove all records from a table?

1117


what are integrity rules?

1092


Explain locks? : Transact sql

1055


What are the qualities of 2nf?

1096


Hi am new to PLSQL & facing problems in writing code like in SP, Functions, so any one having some SP coding with in depth explanation please share with me my Email ID suvarnaatsuvarna@rediffmail.com Or taking tanning on this please do contact me

2068


How do I run a sql query?

1082


What is raw datatype in sql?

1106


What is foreign key and example?

982


How to use boolean type in select statement?

1139


What is an index? What are the types of indexes? How many clustered indexes can be created on a table?

1132


What is bind variable in pl sql?

1105


How to change the order of columns in Oracle SQL Plus ?

1102


What is difference between joins and union?

1195


What is output spooling in sql*plus?

1092


Which command is used to delete a package?

1235