Interested to Buy Any Domain ? << Click Here >> for more details...
6) Explain about below automatic variables
a) _N_
b) _ERROR_
c) _CHAR_
d) _NUMERIC_
e) _ALL_
f) FIRST.BY VARIABLE
g) LAST.BY VARIABLE
h) _NAME_
i) _TYPE_
j) _FREQ_
k) _STAT_
l) _BREAK
- 1 Answers
- 5640 Views
- IBM, SAS, I also Faced
- E-Mail Answers
Answer Posted / vrana95
Automatic variables are created automatically in the data statements and they are added to the PDV but not ouput to
to the resulting dataset which we want.
1)_N_ : number of times the data step has iterated. initially it is 1 and it's counter increases +1 , every time data steps crosses the data statements.
2)_ERROR_: It is 0 by default but is set to 1 every time
the error is encountered.
3)_CHARACTER_ : could be defined in the arrays and other data step programming to include all the character variables.
4)_NUMERIC_ : To include all the numeric variables
5)First.by variable and LAST.By : Whenever, we define a BY parameter with the SET statement, by default two
automatic variables are created in the background and we can utilize them for limiting the rows which we are interested in . {http://support.sas.com/documentation/cdl/en/lrcon/62955/HTML/default/viewer.htm#a000761931.htm}
7) _NAME_ : During transpose the variables you define in VAR statment are transposed and they comes in _NAME_ variable.
proc transpose data=x out=y prefix=m;
by variable1;
id variable2;
var variable3;
run;
8)_TYPE_ and _FREQ_: When you use PROC SUMMARY or PROC MEANS and we define Class parameter for two variables, and we use CHARTYPE in our Proc summary options, then
we get two automatic variables _TYPE_ and _FREQ_ . We can utilize it to limit the output we need.
9)_STAT_ :The default output of PROC MEANS, when no statistics are listed in the OUTPUT statement, is a data set containing a _STAT_ variable and the variables listed in the VAR statement. The output data set contains five records, one for each default statistic N, MIN, MAX, MEAN, and STD.
10) _BREAK_ : PROC report automatically create a variable
_BREAK_.
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
Describe the function and utility of the most difficult SAS macro that you have written?
In proc transpose and data step with arrays which one you pick?
Intern stastical programmer written test
what is scheduling and how will u implement it. In scheduling 5 jobs r running if there is an error occured at 3rd job and how will u check and waht necessary steps will u take not to repeat the same mistake
What do the mod and int function do? : Sas programming
how to generate the test data in sas without input data? : Sas-administrator
Give some examples where proc report’s defaults are different than proc print’s defaults?
Enlist the functions performed by sas.
Do we follow ADAM in analysis dataset development?How? Usually which version? Why is it necessary?
in the flow of data step processing, what is the first action in a typical data step? : Sas programming
How to create a permanent sas data set?
Give e an example of..
what is sas enterprise intelligence architecture? : Sas-bi
what do the pad and dim functions do? : Sas programming
How would you invoke a macro? : sas-macro
