Proc SQL is very convenient for performing table joins compared to a data step merge as it does not require the key columns to be sorted prior to join. What types of programming tasks do you use PROC SQL for versus the data step?Ī. It depends on what types of analysis datasets are required for creating tables but I am more of a data step programmer as it gives me more flexibility.For e.g creating a change from baseline data set for blood pressure sometimes I have to retain certain values …use arrays ….or use the first. Once you have had the data read into SAS datasets are you more of a data step programmer or a PROC SQL programmer?Ī. I have used the SAS/ACCESS SQL pass thru facility for connection with external databases and importing tables from them and also Microsoft access and excel files.Besides this, lot of times I have used PROC SQL for joining tables.Ĥ. Yes I have used it for summarization at times…For e.g if I have to calculate the max value of BP for patients 101 102 and 103 then I use the max (bpd) function to get the maximum value and use group by statement to group the patients accordingly.Ī. Have you ever used PROC SQL for data summarization?Ī. The right join selects all the variables of table b first and join the table a to it.Ģ. The left join selects all the variables from the first table and joins second table to it. The three types of join are inner join, left join and right join.The inner join option takes the matching values from both the tables by the ON option. Q44) What are Hash Objects? Advantages of Hash Object.A. Q43) Why is SAS considered self-documenting?
BASE AND ADVANCED SAS INTERVIEW QUESTIONS HOW TO
Q42) How to save a program by using Data step? Q41) How many different ways we can create a INDEX in SAS? Q40) How to create Macro variables by Using Proc SQL? Q39) How can you perform the Benchmarking in SAS Programm? What are the advantages? Q38) In How many ways we can create SAS Data set by using proc SQL? Q37) How to create a dataset using SQL Procedure? Q35) How to vertically combine SAS Date Set by using Proc SQL and how it is different from Data Step Concatenation? Q34) How processing is different in SQL joins and Data step Merge? Q33) Specify the different types of joins in SQL? Q32) What is the difference between Inner join and Outer joins? Explain with examples? Q31) What are some good SAS programming practices for processing very large data sets? Q30) How to delete the macro variable from global symbol table? How to delete all macro variable Automatically?
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Q29) What is the difference between Sub-queries and SQL Views? Q28) Using macro program how we can print all the dataset available in one SAS Library?
BASE AND ADVANCED SAS INTERVIEW QUESTIONS CODE
Q26) What is the use of %include? How we can see the source code in SAS? Q25) Write a program to delete all the User Defined Macro variables form the Global Symbol Table? Q24) What is the difference between %STR and %NRSTR functions? Q23) What is the difference between functions and PROCs that calculate the same simple descriptivestatistics? Q22) How to resolve Multiple Ampersand Symbols? Q21) Which Macro Functions are know as a Quoting function? Q19) Do you know the application of Validate keyword in SQL? Q18) How would you create multiple observations from a single observation? Q17) What is the difference between %NRST and %STR Functions? Q16) What is the use of Feedback Option? Where it can be applicable? Q15) What is the difference between Keyword parameters and Positional parameters? Q14) Write the entire Syntax of Proc SQL? Q13) What is the difference between Call Symputx and Call Symput? Q12) What is the difference between Global and Local Symbol Table?
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Q11) In How many ways we can create Macro variables in the Local Symbol Table? Q10) What is a method for assigning first.VAR and last.VAR to the BY group variable on unsorted data? Q9) Define all ways to create Macro Variable? Q8) In How many ways we can create Macro variables in the Global Symbol Table? Q7) What is the application of Minoperator? Explain. Q6) What other SAS features do you use for error trapping and data validation? Q4) What is the use of Mprint Option in Macros? Q3) What different option in SAS Can be used to debug the Macro Program? Advanced SAS Interview Questions Q1) SAS Vs SPSS Features Mindmajix offers Advanced SAS Interview Questions 2018 that helps you in cracking your interview & acquire dream career as SAS Programmer. So, You still have opportunity to move ahead in your career in SAS Programming. According to research SAS has a market share of about 17.8%. There are lot of opportunities from many reputed companies in the world. If you're looking for SAS Interview Questions for Experienced or Freshers, you are at right place.