1.What is the difference between _NULL_ , _ALL_, and _N_?
2.What are the uses of _NULL_ using in Data Steps? Can we
_NULL_ in Proc Steps also?
3.How do call the macro variable in Data Steps?
4.How to construct Pivot tables in Excel Using SAS?
- 3 Answers
- 8808 Views
- I also Faced
- E-Mail Answers
Answer Posted / chandrakanth
_null_ will act like any other data step but it would not create any data set.
_all_ will select all the variables in a particular data set.
_n_ is the automatic variable generated by SAS which counts the number of loops SAS moved to the top of data set
(but some people say it is total number of observations which is not always true)
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
how to read the variables in sas? : Sas-administrator
what are the categories that sas informats are used to the place the data? : Sas-administrator
Intern stastical programmer written test
what is treatment emergent events and treatment emregent adverse event
what is sas olap server? : Sas-di
How long can a macro variable be? A token? : sas-macro
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? : sas-macro
How do you delete duplicate observations in sas?
what is the function of catx syntax? : Sas-administrator
Can you suggest us materials for sdtm mapping?
What is the purpose of trailing @ and @@? How do you use them?
how does sas handle missing values in functions? : Sas programming
What are common programming errors committed in sas
Is the physical structure of the data set in the same orientation as the report? Do you need to reshape the data sets? What method should you use to reshape the data–DATA steps,PROC TRANSPOSE,output data set from a procedure?
What is the use of PROC gplot?
