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What is the difference between SAS Data step and SAS PROC SQL,
and which is better?
 Question Submitted By :: SAS
I also faced this Question!!     Answer Posted By  
# 1
1)Syntax is different
3)benefit of PROC SQL is its ability to process unsorted
data and create tables in a sorted fashion
4)Performing an OUTER UNION is very similar to the DATA step
with a SET statement referencing two or more data sets
5)Establish a connection with a RDBMS a)LIBNAME in dataset
Is This Answer Correct ?    0 Yes 1 No

Other SAS Interview Questions
  Question Asked @ Answers
libname deepak 'C:\SAS Files'; proc format; invalue convert 'A+' = 100 'A' = 96 'A-' = 92 'B+' = 88 'B' = 84 'B-' = 80 'C+' = 76 'C' = 72 'F' = 65; data deepak.grades; input ID $3. Grade convert.; *format Grade convert. ; datalines; 001 A- 002 B+ 003 F 004 C+ 005 A ; proc print data = deepak.grades; run; I get the following output Obs ID Grade 1 001 . 2 002 . 3 003 . 4 004 . 5 005 . I donít understand why Grade shows up as a missing value. Everything seems fine, including ID $3. Now, in case I use ID : $3. Or use column input, I get the desired output. Kindly help Deepak   6
Suppose there is a SAS dataset with following values - Parent Child A B B C D E F G G H H I and so onÖ.. This goes onto 1000s of observations/rows. Now how do we identify from this dataset Grandparents and Grandchildrens ? Barclays 4
firstobs and obs are working only option wise,but we are using infile statement with firstobs and obs in a statement wise? so firstobs,obs working at options and statemnts or not?   1
what is cummaltive frequency,and varience in proc unviarte L&T 1
which domain is better in sas? clinical trails or banking   3
What do you feel about hardcoding? Pfizer 3
What is the difference between nodup and nodupkey options? iFlex 17
Which date functions advances a date time or date/time value by agiven interval?   3
If you need the value of a variable rather than the variable itself what would you use to load the value to a macro variable?   2
What has been your most common programming mistake? Wipro 4
How to write duplicate records into a separate dataset using sort? HSBC 4
What statement do you code to write the record to the file?   5
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