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...

What is the difference between join and union.

Answer Posted / kamruddin saha

Join can be implemented different numbers of column where as
Union is implemented same number of column in different tables
Ex:- Table1 Contains 5 column and Table2 contains 8 columns.
So we can get data of 3 columns from Table1 and 4 Columns
from Table2 using JOIN.

But using UNION we can get same number of column from both
table.Like 2 columns from Table1 and 2 columns from Table2.

Thank You

Is This Answer Correct ?    13 Yes 8 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is the difference between left outer join and left join?

995


What is cascade in sql?

964


How to take user input in pl sql?

1163


What are different methods to trace the pl/sql code?

1120


What is Materialized View? In What Scenario we Use Materialized View?

9518


Why cross join is used?

1077


What is a unique key?

1056


How many types of triggers exist in pl/sql?

1073


What are the topics in pl sql?

972


Hi how to import oracle sequence in Informatica? Please write stored procedure code that will import oracle sequence in Informatica SP transformation as per below scenario Oracle table product list Pro_id, pro_name 101, LED Lights. 102, 20watt CFL Lights. 103, 30 watt CFL lights Now a new flat file with new product list needs to be added to oracle table product list with oracle sequence. flat file product Prono,pro_name, 1, 20 watt tube light 2, 30 watt tube light & target should be like 101, LED Lights. 102, 20watt CFL Lights. 103, 30 watt CFL lights. 104, 20 watt tube light 105, 30 watt tube light thks reg suvarna joshi suvarnaatsuvarna@rediffmail.com

2555


What is a common use of group by in sql?

1051


Mention what does plv msg allows you to do?

1124


What is memory optimized table?

1046


What does cursor do in sql?

1025


What are analytical functions in sql?

1029