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 Difference between PROC SQL JOINS and MERGE?

Answer Posted / rajitha macherla

The resultant dataset depends on the input datasets.
In case of one to one and one to many both work
similarly,i.e. the resultant dataset is same.
But differs in case of many to many and non matching
datasets:
many to many:
ex: (merge on x) (proc sql)
X Y X Z X Y Z X Y Z
----- ------ ------- -------
1 A 1 F 1 A F 1 A F
1 C 1 R ---> 1 C R 1 A R
2 B 2 G 2 B G 1 C F
1 C R
2 B G


NON MATCHING DATA:

ex: (merge on x) (proc sql)
X Y X Z X Y Z X Y Z
----- ------ ------- -------
1 A 1 F 1 A F 1 A F
2 B 3 T ---> 2 B . 3 C T
3 C 4 G 3 C T
4 . G

Is This Answer Correct ?    28 Yes 6 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

what is the Population you used in your project, is it ITT or PP?

2747


what is star schema? : Sas-di

1131


How will you react when, while consulting a SAS documentation manual to get an answer to a problem, someone says hey, I thought you were supposed to know all that stuff already, and not have to look it up in a book?

2463


What are the data types in sas?

1063


What does P-value signify about the statistical data?

1367


Assuming {et} is randomly drawn from N(0,1) and e0 = 0, generate 200 observations of xt = et − 0.5e(t−1) and draw a line graph of xt.

1881


Mention the category in which sas informats are placed?

1020


What can be the size of largest dataset in SAS?

1234


in the flow of data step processing, what is the first action in a typical data step? : Sas programming

1080


Difference between SAS STATA & SPSS?

1126


what is transformation in sas data integration? : Sas-di

1036


Mention what is PROC in SAS?

1060


Explain translate function?

1213


What is the difference between where and if statement?

1117


What are the different operating system platforms in which we can use sas? : sas-grid-administration

1075